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Mark, IL 61340 Weather

It is 55°F and clear in Mark, IL 61340, observed at 8:15 AM CDT. Today: Sunny, high 76°F, low 59°F. Hourly and 7-day forecast from the National Weather Service. Times are local (CDT).

Mark, IL 61340 current weather

55°F

Clear

H 76° / L 59°Feels like 55°

6° warmer than yesterday at this time

  • No rain expected in the next 12 hours

Observed at Marshall County Airport (18.2 mi away), 10/28/2026, 8:15 AM CDT

Hourly forecast

NWS, updated 10/28/2026, 4:01 AM PT

  1. Now54°
  2. 9 AM57°
  3. 10 AM61°
  4. 11 AM66°
  5. 12 PM69°
  6. 1 PM73°
  7. 2 PM74°
  8. 3 PM75°
  9. 4 PM75°
  10. 5 PM74°
  11. 6 PM70°
  12. 7 PM68°
  13. 8 PM66°
  14. 9 PM65°
  15. 10 PM65°
  16. 11 PM64°
  17. Thu12 AM63°
  18. 1 AM63°
  19. 2 AM63°
  20. 3 AM62°
  21. 4 AM62°
  22. 5 AM61°
  23. 6 AM60°
  24. 7 AM59°11%
  25. 8 AM59°14%
  26. 9 AM62°
  27. 10 AM66°
  28. 11 AM68°
  29. 12 PM70°
  30. 1 PM70°
  31. 2 PM71°
  32. 3 PM71°
  33. 4 PM72°
  34. 5 PM71°
  35. 6 PM68°
  36. 7 PM65°
  37. 8 PM60°
  38. 9 PM57°
  39. 10 PM55°
  40. 11 PM53°
  41. Fri12 AM52°
  42. 1 AM51°
  43. 2 AM50°
  44. 3 AM49°
  45. 4 AM48°
  46. 5 AM46°
  47. 6 AM46°
  48. 7 AM46°17%

7-day forecast

Tap a day for details

  • Today10/28Low 59°High 76°

    Today: Sunny. High near 76, with temperatures falling to around 74 in the afternoon. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Tonight: Mostly clear. Low around 59, with temperatures rising to around 61 overnight. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Sunny
  • Thu10/2914% chance of precipitationLow 46°High 73°

    Thursday: Mostly sunny. High near 73, with temperatures falling to around 71 in the afternoon. West wind 5 to 10 mph.

    Thursday Night: Mostly clear, with a low around 46. North wind around 5 mph.

    Mostly Sunny
  • Fri10/3052% chance of precipitationLow 51°High 67°

    Friday: A chance of rain showers after 7am. Partly sunny, with a high near 67. Chance of precipitation is 50%.

    Friday Night: A chance of rain showers before 7pm, then a chance of showers and thunderstorms between 7pm and 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 51. Chance of precipitation is 50%.

    Chance Rain Showers
  • Sat10/3149% chance of precipitationLow 52°High 67°

    Saturday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 67. Chance of precipitation is 50%.

    Saturday Night: A chance of rain showers. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.

    Chance Showers And Thunderstorms
  • Sun11/146% chance of precipitationLow 53°High 67°

    Sunday: A chance of rain showers. Mostly cloudy, with a high near 67. Chance of precipitation is 50%.

    Sunday Night: A slight chance of rain showers. Mostly cloudy, with a low around 53.

    Chance Rain Showers
  • Mon11/257% chance of precipitationLow 55°High 67°

    Monday: A chance of rain showers. Mostly cloudy, with a high near 67. Chance of precipitation is 40%.

    Monday Night: Rain showers likely. Mostly cloudy, with a low around 55. Chance of precipitation is 60%.

    Chance Rain Showers
  • Tue11/364% chance of precipitationLow 51°High 68°

    Tuesday: Rain showers likely. Mostly cloudy, with a high near 68. Chance of precipitation is 60%.

    Tuesday Night: A chance of rain showers. Mostly cloudy, with a low around 51. Chance of precipitation is 50%.

    Rain Showers Likely

Forecast for 41.266, -89.252 from the NWS DVN office, updated 10/28/2026, 4:01 AM PT · Official forecast on weather.gov

Hazardous weather outlookIssued 10/28/2026, 3:02 AM CDT

This Hazardous Weather Outlook is for portions of north central Illinois: northwest Illinois: west central Illinois: east central Iowa: northeast Iowa: southeast Iowa and northeast Missouri.

Day one: TODAY AND TONIGHT

A cold front will bring scattered showers and thunderstorms to the area this evening and overnight. Lightning is the main threat, and severe storms are not expected.

Days two through seven: THURSDAY THROUGH TUESDAY

Thunderstorms will be possible Friday and Friday night, with severe storms once again not expected.

Spotter information statement

Spotter activation will not be needed today or tonight.

Forecaster's discussionIssued 10/28/2026, 6:14 AM CDT

Key messages

- An unseasonably mild and breezy day ahead with a cold front bringing scattered showers and isolated storms to portions of eastern Iowa and northwest Illinois tonight.

- Rain chances increase further heading into the weekend as slightly cooler air moves in.

- A pattern change early next week could bring a significant system and more rain to the Midwest.

Short term

Issued at 1246 AM CDT Wed Oct 28 2026

Shortwave troughing over south-central Canada will help deepen a low pressure over Minnesota today as it treks into Ontario. The tightening pressure gradient across the CWA and 30-knot LLJ is forecasted to produce southerly wind gusts between 15-25 mph this afternoon and evening. Highs are likely to climb into the mid-to-upper 70s, the warmest of the week. By tonight, a cold front moves into central Iowa, supporting scattered showers (40-60%) and isolated storms across eastern Iowa and northwest Illinois. Rainfall amounts should be light (a trace to a tenth of an inch). Conditions dry back out by Thursday afternoon with the cold front moving into central Missouri and southern Illinois. A weak high pressure slides into Minnesota and Wisconsin Thursday night, and northeasterly flow advects in some cooler air as lows fall into the 40s.

Long term

Issued at 1246 AM CDT Wed Oct 28 2026

Friday-Sunday: A longwave trough over the West Coast will lift a weak trough in the subtropical jet northward into the Southern Plains on Friday. Pressure falls across the Central Plains and southwesterly flow aloft is expected to transition the boundary over central Missouri into a warm front. Isentropic upglide within the 295-305 K layer is likely to support additional showers and storms (50-70% coverage) Friday into Saturday. As the subtropical trough approaches Saturday night, another round of scattered showers (20-40% coverage) could form and persist into Sunday morning. By Sunday afternoon, shortwave ridging sets back in, providing the area a brief period of dryness before heading into a more active pattern early next week. By the end of the weekend, there is decent chance (60-90%) for most of the CWA to see rainfall amounts ranging between 0.25-0.75 of an inch.

Monday-Tuesday: The longwave trough over the western CONUS finally ejects eastward into the Rockies as surface cyclogenesis occurs again across the south-central Plains on Monday. Beyond this point, there are two possible scenarios: (1) the subtropical jet becomes out of phase with the polar jet leading a more southern track or (2) the jets stay in phase and the low moves into the Mid-Mississippi River Valley. This will have major implications on our precipitation amounts, temperatures, and winds early next week. The only certainty among the ensembles is the precipitation type being rain as temperatures are likely (70-90%) to stay above 40 degrees through the middle of next week. In terms of rainfall amounts, latest NBM guidance has a 50-70% of 1+ inches of rainfall between Monday and Wednesday morning, but again, these probabilities are susceptible to shift as confidence improves on the track of the system.

Aviation

Issued at 609 AM CDT Wed Oct 28 2026

Isolated ground fog is around eastern Iowa this morning, and is not expected to impact forecast terminals, but may affect Iowa City airport nearby through 13Z.

Otherwise, a VFR day is highly confident today, with some passing morning altocumulus clouds and with those a sprinkle can't be ruled out, followed by breezy weather from late morning to early evening. South winds of 10 to 20 kts are expected, with a few gusts around 25 possible this afternoon in eastern Iowa.

Tonight, a period of LLWS is expected as strong winds 2kft aloft blow from the southwest, at 40 to 50 kts, while surface winds are 10 kts from the south. This wind period is ahead of a cold front arriving between 08z and 12Z. Scattered showers and a few storms are possible with that frontal passage late tonight, with brief MVFR conditions in rain/thunder.

Following the frontal passage, there may be some MVFR cigs to follow during the morning hours Thursday.

Watches, warnings and advisories

IA: None. IL: None. MO: None.

From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.

Next 6 hours

NWS hourly forecast

  1. Now54°Sunny0%5 mph
  2. 9 AM57°Sunny0%5 mph
  3. 10 AM61°Sunny0%5 mph
  4. 11 AM66°Sunny0%10 mph
  5. 12 PM69°Sunny0%10 mph
  6. 1 PM73°Sunny0%10 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow
40°60°80°0%100%WedThuFriSatSunMonTue75°54°72°53°67°46°67°51°67°52°67°53°68°56°

Line: temperature °F. Bars: chance of precipitation.

  1. WedNow54° 0% Sky 7%5g10
  2.  9 AM57° 0% Sky 5%5g12
  3.  10 AM61° 0% Sky 7%5g13
  4.  11 AM66° 0% Sky 1%10
  5.  12 PM69° 0% Sky 4%10g15
  6.  1 PM73° 0% Sky 2%10g17
  7.  2 PM74° 0% Sky 1%10g18
  8.  3 PM75° 1% Sky 3%10g18
  9.  4 PM75° 1% Sky 3%10g18
  10.  5 PM74° 1% Sky 1%10g17
  11.  6 PM70° 1% Sky 2%10g15
  12.  7 PM68° 2% Sky 3%10g15
  13.  8 PM66° 2% Sky 8%10g16
  14.  9 PM65° 2% Sky 16%10g17
  15.  10 PM65° 3% Sky 15%10g20
  16.  11 PM64° 3% Sky 17%10g20
  17. Thu 10/2912 AM63° 5% Sky 33%10g21
  18.  1 AM63° 6% Sky 50%15g21
  19.  2 AM63° 5% Sky 36%10g20
  20.  3 AM62° 5% Sky 28%10g20
  21.  4 AM62° 4% Sky 33%10g20
  22.  5 AM61° 6% Sky 41%10g18
  23.  6 AM60° 6% Sky 46%10g17
  24.  7 AM59° 11% Sky 40%10g16
  25.  8 AM59° 14% Sky 46%10g16
  26.  9 AM62° 6% Sky 49%10g16
  27.  10 AM66° 5% Sky 55%10g15
  28.  11 AM68° 8% Sky 52%10g15
  29.  12 PM70° 9% Sky 50%10g15
  30.  1 PM70° 7% Sky 64%10
  31.  2 PM71° 0% Sky 68%10
  32.  3 PM71° 0% Sky 55%5g14
  33.  4 PM72° 0% Sky 24%5g13
  34.  5 PM71° 0% Sky 12%5g12
  35.  6 PM68° 0% Sky 4%5g10
  36.  7 PM65° 0% Sky 1%5g10
  37.  8 PM60° 0% Sky 0%5g10
  38.  9 PM57° 0% Sky 3%5g10
  39.  10 PM55° 0% Sky 5%5
  40.  11 PM53° 0% Sky 6%5
  41. Fri 10/3012 AM52° 0% Sky 7%5
  42.  1 AM51° 2% Sky 8%5
  43.  2 AM50° 2% Sky 13%5
  44.  3 AM49° 2% Sky 19%5
  45.  4 AM48° 2% Sky 24%5
  46.  5 AM46° 2% Sky 31%5
  47.  6 AM46° 2% Sky 37%5
  48.  7 AM46° 17% Sky 44%5
  49.  8 AM49° 17% Sky 52%5
  50.  9 AM52° 17% Sky 60%5g10
  51.  10 AM56° 17% Sky 68%5g10
  52.  11 AM59° 17% Sky 71%5g10
  53.  12 PM62° 17% Sky 74%5g12
  54.  1 PM64° 45% Sky 77%5g12
  55.  2 PM65° 45% Sky 81%5g12
  56.  3 PM67° 45% Sky 85%5g12
  57.  4 PM67° 45% Sky 89%5g12
  58.  5 PM66° 45% Sky 89%5g12
  59.  6 PM64° 45% Sky 89%5g13
  60.  7 PM61° 52% Sky 89%5g13
  61.  8 PM59° 52% Sky 89%5g13
  62.  9 PM58° 52% Sky 89%5g14
  63.  10 PM56° 52% Sky 89%5g14
  64.  11 PM55° 52% Sky 88%5g14
  65. Sat 10/3112 AM54° 52% Sky 86%5g13
  66.  1 AM54° 48% Sky 85%5g13
  67.  2 AM53° 48% Sky 85%5g13
  68.  3 AM53° 48% Sky 85%5g13
  69.  4 AM53° 48% Sky 85%5g13
  70.  5 AM52° 48% Sky 86%5g13
  71.  6 AM51° 48% Sky 86%5g12
  72.  7 AM52° 49% Sky 87%5g12
  73.  8 AM53° 49% Sky 87%5g12
  74.  9 AM56° 49% Sky 87%5g12
  75.  10 AM58° 49% Sky 87%5g12
  76.  11 AM60° 49% Sky 87%5g12
  77.  12 PM63° 49% Sky 87%5g10
  78.  1 PM65° 32% Sky 87%5g10
  79.  2 PM66° 32% Sky 87%5g10
  80.  3 PM67° 32% Sky 86%5
  81.  4 PM67° 32% Sky 86%5
  82.  5 PM66° 32% Sky 86%5
  83.  6 PM64° 32% Sky 85%5g10
  84.  7 PM62° 18% Sky 85%5g10
  85.  8 PM60° 18% Sky 85%5g10
  86.  9 PM58° 18% Sky 85%5g10
  87.  10 PM57° 18% Sky 85%5g10
  88.  11 PM56° 18% Sky 85%5g10
  89. Sun 11/112 AM55° 18% Sky 85%5
  90.  1 AM55° 33% Sky 85%5
  91.  1 AM55° 33% Sky 85%5
  92.  2 AM54° 33% Sky 85%5
  93.  3 AM54° 33% Sky 85%5
  94.  4 AM53° 33% Sky 85%5
  95.  5 AM52° 33% Sky 85%5
  96.  6 AM52° 46% Sky 84%5
  97.  7 AM53° 46% Sky 84%5
  98.  8 AM56° 46% Sky 84%5g10
  99.  9 AM58° 46% Sky 84%5g10
  100.  10 AM60° 46% Sky 84%5g10
  101.  11 AM62° 46% Sky 84%5g12
  102.  12 PM64° 29% Sky 81%5g12
  103.  1 PM66° 29% Sky 81%5g12
  104.  2 PM67° 29% Sky 81%5g12
  105.  3 PM67° 29% Sky 81%5g12
  106.  4 PM66° 29% Sky 81%5g12
  107.  5 PM64° 29% Sky 81%5g10
  108.  6 PM62° 21% Sky 73%5g10
  109.  7 PM61° 21% Sky 73%5g10
  110.  8 PM59° 21% Sky 73%5g10
  111.  9 PM58° 21% Sky 73%5g10
  112.  10 PM57° 21% Sky 73%5g10
  113.  11 PM56° 21% Sky 73%5
  114. Mon 11/212 AM55° 20% Sky 75%5
  115.  1 AM54° 20% Sky 75%5
  116.  2 AM54° 20% Sky 75%5
  117.  3 AM54° 20% Sky 75%5
  118.  4 AM54° 20% Sky 75%5
  119.  5 AM53° 20% Sky 75%5
  120.  6 AM54° 21% Sky 74%5
  121.  7 AM56° 21% Sky 74%5
  122.  8 AM58° 21% Sky 74%5g10
  123.  9 AM60° 21% Sky 74%5g12
  124.  10 AM62° 21% Sky 74%5g13
  125.  11 AM64° 21% Sky 74%5g14
  126.  12 PM65° 42%0.01"Sky 81%5g15
  127.  1 PM66° 42%0.01"Sky 81%5g16
  128.  2 PM67° 42%0.01"Sky 81%10g16
  129.  3 PM67° 42%0.01"Sky 81%10g16
  130.  4 PM66° 42%0.01"Sky 81%10g16
  131.  5 PM65° 42%0.01"Sky 81%10g16
  132.  6 PM63° 56%0.02"Sky 85%10g16
  133.  7 PM62° 56%0.02"Sky 85%10g16
  134.  8 PM60° 56%0.02"Sky 85%10g17
  135.  9 PM59° 56%0.02"Sky 85%10g17
  136.  10 PM58° 56%0.02"Sky 85%10g17
  137.  11 PM57° 56%0.02"Sky 85%10g16
  138. Tue 11/312 AM57° 57%0.01"Sky 86%10g16
  139.  1 AM57° 57%0.01"Sky 86%10g17
  140.  2 AM56° 57%0.01"Sky 86%10g17
  141.  3 AM56° 57%0.01"Sky 86%10g18
  142.  4 AM56° 57%0.01"Sky 86%10g18
  143.  5 AM56° 57%0.01"Sky 86%10g18
  144.  6 AM56° 64%0.03"Sky 85%10g18
  145.  7 AM57° 64%0.03"Sky 85%10g20
  146.  8 AM59° 64%0.03"Sky 85%10g20
  147.  9 AM61° 64%0.03"Sky 85%10g21
  148.  10 AM63° 64%0.03"Sky 85%10g21
  149.  11 AM65° 64%0.03"Sky 85%10g20
  150.  12 PM66° 59%0.03"Sky 83%10g20
  151.  1 PM67° 59%0.03"Sky 83%10g20
  152.  2 PM68° 59%0.03"Sky 83%10g20
  153.  3 PM68° 59%0.03"Sky 83%10g20
  154.  4 PM67° 59%0.03"Sky 83%10g20
  155.  5 PM64° 59%0.03"Sky 83%10g20
  156.  6 PM62° 48%0.01"Sky 80%10g20

Temperature °F · chance of precipitation · amount in inches (T = trace) · sky cover · wind and gusts (g) in mph

NWS hourly forecast updated 10/28/2026, 4:01 AM PT

Observed today

Since midnight, vs yesterday and normal

Today's high so far is 2° below the normal of 60° and 10° cooler than yesterday's high.

High so far
58°
2° below normal
Low so far
55°
Normal low 37°
Precipitation
0.00 in
Since midnight
Yesterday
High 68° · Low 45° · Precip 0.00 in
Normal for today
High 60° · Low 37°

Observed at Marshall County Airport (KC75) since midnight local time, through 8:15 AM. Station reports are preliminary and not quality controlled. Normals are estimated from 1991 to 2020 monthly normals at Hennepin Wtr Trmt Plt.

Radar and satellite

National radar

NEXRAD (last 50 min) and GOES

Latest

Rain and snow totals

Next 3 days, NWS forecast grid

Rain (liquid)
0.04 in
Snow
0.00 in
Ice
0.00 in

Nearby hazards

Illinois hazards

Severe storm and flash flood outlooks, expected rain, river flooding and wildfires near this area

  • Severe storm outlook today:General thunderstormsOutlook map
  • Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
  • River gauges within 40 miles at or above flood stage: None reported
  • Active wildfires within 50 miles: None reported

Drought

By county

Putnam County, week of 10/20/2026

No drought or abnormal dryness in this county.

Sun and moon

Local time, center of the area

Sunrise
7:23 AM
Sunset
5:57 PM
Daylight
10 hr 34 min
Moon
Waning Gibbous 93% lit
First light (civil dawn)
6:55 AM
Last light (civil dusk)
6:25 PM
Moonrise
7:20 PM
Moonset
10:31 AM

Normal October weather

Climate

Normal October high 66°, low 42°. 1991 to 2020 normals at Hennepin Wtr Trmt Plt, 4 mi away.

Other places nearby

Data sources

See something wrong? Request a correction

Frequently asked questions

What is the weather in Mark, IL 61340 right now?
The latest observation from Marshall County Airport was 55°F and clear, reported at 10/28/2026, 8:15 AM CDT.
What is the high temperature today in Mark, IL 61340?
The National Weather Service forecast for today calls for a high near 76°F. Sunny.
Will it rain in Mark, IL 61340 in the next 24 hours?
The NWS hourly forecast does not show any hour with a 50% or higher chance of precipitation in the next 24 hours.
What time is sunrise and sunset in Mark, IL 61340 today?
Sunrise is about 7:23 AM CDT and sunset is about 5:57 PM CDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Mark, IL 61340?
At Hennepin Wtr Trmt Plt, the 1991 to 2020 normal high in October is 66°F and the normal low is 42°F.

About this data

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