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Walnut, CA Weather

Today: Patchy Fog then Partly Sunny, high 76°F, low 56°F. Hourly and 10-day forecast from the National Weather Service. Times are local (PDT).

Walnut, CA current weather

59°F

Mostly Cloudy

Forecast for this hour. No recent report from a nearby station.

H 76° / L 56°

  • No rain expected in the next 12 hours

No recent station report. NWS hourly forecast updated 10/27/2026, 11:26 PM PT

Hourly forecast

NWS, updated 10/27/2026, 11:26 PM PT

  1. Now59°
  2. 1 AM59°
  3. 2 AM58°
  4. 3 AM58°
  5. 4 AM58°
  6. 5 AM56°
  7. 6 AM56°
  8. 7 AM56°
  9. 8 AM56°
  10. 9 AM60°
  11. 10 AM63°
  12. 11 AM67°
  13. 12 PM71°
  14. 1 PM72°
  15. 2 PM76°
  16. 3 PM76°
  17. 4 PM76°
  18. 5 PM71°
  19. 6 PM68°
  20. 7 PM64°
  21. 8 PM63°
  22. 9 PM63°
  23. 10 PM61°
  24. 11 PM61°
  25. Thu12 AM59°
  26. 1 AM59°
  27. 2 AM58°
  28. 3 AM58°
  29. 4 AM58°
  30. 5 AM56°
  31. 6 AM56°
  32. 7 AM56°
  33. 8 AM56°
  34. 9 AM58°
  35. 10 AM63°
  36. 11 AM65°
  37. 12 PM67°
  38. 1 PM72°
  39. 2 PM74°
  40. 3 PM74°
  41. 4 PM72°
  42. 5 PM71°
  43. 6 PM68°
  44. 7 PM66°
  45. 8 PM66°
  46. 9 PM65°
  47. 10 PM65°
  48. 11 PM65°11%

10-day forecast

Tap a day for details

  • Today10/28Low 56°High 76°

    Wednesday: Patchy fog before 11am. Partly sunny, with a high near 76. Southeast wind 0 to 5 mph.

    Overnight: Patchy fog after 5am. Mostly cloudy, with a low around 56. Southeast wind 0 to 5 mph.

    Patchy Fog then Partly Sunny
  • Thu10/2911% chance of precipitationLow 57°High 74°

    Thursday: Partly sunny, with a high near 74. South wind 0 to 5 mph.

    Thursday Night: Mostly cloudy, with a low around 57. South southwest wind 0 to 5 mph.

    Partly Sunny
  • Fri10/30Low 55°High 70°

    Friday: Partly sunny, with a high near 70.

    Friday Night: Mostly cloudy, with a low around 55.

    Partly Sunny
  • Sat10/3158% chance of precipitationLow 55°High 68°

    Saturday: A chance of rain showers after 5pm. Mostly cloudy, with a high near 68.

    Saturday Night: Rain showers likely. Cloudy, with a low around 55.

    Mostly Cloudy then Chance Rain Showers
  • Sun11/142% chance of precipitationLow 53°High 70°

    Sunday: A chance of rain showers before 4pm. Partly sunny, with a high near 70.

    Sunday Night: Mostly clear, with a low around 53.

    Chance Rain Showers
  • Mon11/2Low 54°High 74°

    Monday: Sunny, with a high near 74.

    Monday Night: Mostly clear, with a low around 54.

    Sunny
  • Tue11/3Low High 75°

    Tuesday: Mostly sunny, with a high near 75.

    Mostly Sunny
  • Wed11/4Model blendLow 56°High 72°

    Wednesday: Mostly sunny. High near 72°. Low that night near 56°.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Thu11/5Model blendLow 56°High 71°

    Thursday: Mostly sunny. High near 71°. Low that night near 56°.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Fri11/6Model blend11% chance of precipitationLow High 69°

    Friday: Partly cloudy. High near 69°. About 0.08 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

Forecast for 34.032, -117.858 from the NWS LOX office, updated 10/27/2026, 11:26 PM PT · Official forecast on weather.gov

Days 8 to 10: NOAA National Blend of Models, station KPOC (La Verne/Brackett Fld, 6 mi), model run 10/27/2026, 4:00 PM PDT

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. Now59°Mostly Cloudy0%0 mph
  2. 1 AM59°Mostly Cloudy0%0 mph
  3. 2 AM58°Mostly Cloudy0%0 mph
  4. 3 AM58°Mostly Cloudy0%0 mph
  5. 4 AM58°Mostly Cloudy0%0 mph
  6. 5 AM56°Patchy Fog0%5 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gusts
Show
50°65°80°0%100%WedThuFriSatSunMonTue76°56°74°56°70°57°68°55°69°57°74°54°69°55°

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

  1. WedNow59° 0% Sky 73%0
  2.  1 AM59° 0% Sky 73%0
  3.  2 AM58° 0% Sky 73%0
  4.  3 AM58° 0% Sky 73%0
  5.  4 AM58° 0% Sky 73%0
  6.  5 AM56° 0% Sky 90%5
  7.  6 AM56° 0% Sky 90%5
  8.  7 AM56° 0% Sky 90%5
  9.  8 AM56° 0% Sky 90%0
  10.  9 AM60° 0% Sky 90%0
  11.  10 AM63° 0% Sky 90%0
  12.  11 AM67° 0% Sky 45%0
  13.  12 PM71° 0% Sky 45%0
  14.  1 PM72° 0% Sky 45%0
  15.  2 PM76° 0% Sky 45%5
  16.  3 PM76° 0% Sky 45%5
  17.  4 PM76° 0% Sky 45%5
  18.  5 PM71° 0% Sky 55%5
  19.  6 PM68° 0% Sky 55%5
  20.  7 PM64° 0% Sky 55%5
  21.  8 PM63° 0% Sky 55%5
  22.  9 PM63° 0% Sky 55%5
  23.  10 PM61° 0% Sky 55%5
  24.  11 PM61° 0% Sky 78%0
  25. Thu 10/2912 AM59° 0% Sky 78%0
  26.  1 AM59° 0% Sky 78%0
  27.  2 AM58° 0% Sky 78%0
  28.  3 AM58° 0% Sky 78%0
  29.  4 AM58° 0% Sky 78%0
  30.  5 AM56° 0% Sky 76%0
  31.  6 AM56° 0% Sky 76%0
  32.  7 AM56° 0% Sky 76%0
  33.  8 AM56° 0% Sky 76%0
  34.  9 AM58° 0% Sky 76%0
  35.  10 AM63° 0% Sky 76%0
  36.  11 AM65° 0% Sky 58%5
  37.  12 PM67° 0% Sky 58%5
  38.  1 PM72° 0% Sky 58%5
  39.  2 PM74° 0% Sky 58%5
  40.  3 PM74° 0% Sky 58%5
  41.  4 PM72° 0% Sky 58%5
  42.  5 PM71° 3% Sky 58%5
  43.  6 PM68° 3% Sky 58%5
  44.  7 PM66° 3% Sky 58%5
  45.  8 PM66° 3% Sky 58%5
  46.  9 PM65° 3% Sky 58%5
  47.  10 PM65° 3% Sky 58%5
  48.  11 PM65° 11% Sky 93%5
  49. Fri 10/3012 AM65° 11% Sky 93%5
  50.  1 AM65° 11% Sky 93%5
  51.  2 AM63° 11% Sky 93%5
  52.  3 AM63° 11% Sky 93%5
  53.  4 AM63° 11% Sky 93%5
  54.  5 AM62° 7% Sky 67%0
  55.  6 AM59° 7% Sky 67%0
  56.  7 AM58° 7% Sky 67%0
  57.  8 AM57° 7% Sky 67%5
  58.  9 AM58° 7% Sky 67%5
  59.  10 AM61° 7% Sky 67%5
  60.  11 AM63° 5% Sky 53%5
  61.  12 PM65° 5% Sky 53%5
  62.  1 PM67° 5% Sky 53%5
  63.  2 PM68° 5% Sky 53%5
  64.  3 PM69° 5% Sky 53%5
  65.  4 PM70° 5% Sky 53%5
  66.  5 PM70° 5% Sky 46%5
  67.  6 PM68° 5% Sky 46%5
  68.  7 PM66° 5% Sky 46%5
  69.  8 PM63° 5% Sky 46%0
  70.  9 PM61° 5% Sky 46%0
  71.  10 PM60° 5% Sky 46%0
  72.  11 PM59° 6% Sky 49%0
  73. Sat 10/3112 AM59° 6% Sky 49%0
  74.  1 AM58° 6% Sky 49%0
  75.  2 AM58° 6% Sky 49%0
  76.  3 AM57° 6% Sky 49%0
  77.  4 AM56° 6% Sky 49%0
  78.  5 AM55° 3% Sky 73%0
  79.  6 AM55° 3% Sky 73%0
  80.  7 AM55° 3% Sky 73%0
  81.  8 AM57° 3% Sky 73%5
  82.  9 AM59° 3% Sky 73%5
  83.  10 AM61° 3% Sky 73%5
  84.  11 AM63° 14% Sky 90%0
  85.  12 PM65° 14% Sky 90%0
  86.  1 PM66° 14% Sky 90%0
  87.  2 PM67° 14% Sky 90%0
  88.  3 PM68° 14% Sky 90%0
  89.  4 PM68° 14% Sky 90%0
  90.  5 PM66° 41% Sky 96%0
  91.  6 PM65° 41% Sky 96%0
  92.  7 PM63° 41% Sky 96%0
  93.  8 PM62° 41% Sky 96%0
  94.  9 PM61° 41% Sky 96%0
  95.  10 PM61° 41% Sky 96%0
  96.  11 PM60° 58%0.03"Sky 93%0
  97. Sun 11/112 AM59° 58%0.03"Sky 93%0
  98.  1 AM59° 58%0.03"Sky 93%0
  99.  1 AM58° 58%0.03"Sky 93%0
  100.  2 AM57° 58%0.03"Sky 93%0
  101.  3 AM57° 58%0.03"Sky 93%0
  102.  4 AM57° 42%0.03"Sky 75%0
  103.  5 AM57° 42%0.03"Sky 75%0
  104.  6 AM57° 42%0.03"Sky 75%0
  105.  7 AM58° 42%0.03"Sky 75%5
  106.  8 AM60° 42%0.03"Sky 75%5
  107.  9 AM62° 42%0.03"Sky 75%5
  108.  10 AM64° 29% Sky 61%0
  109.  11 AM66° 29% Sky 61%0
  110.  12 PM68° 29% Sky 61%0
  111.  1 PM69° 29% Sky 61%5
  112.  2 PM69° 29% Sky 61%5
  113.  3 PM69° 29% Sky 61%5
  114.  4 PM68° 7% Sky 33%5
  115.  5 PM66° 7% Sky 33%5
  116.  6 PM63° 7% Sky 33%5
  117.  7 PM61° 7% Sky 33%0
  118.  8 PM60° 7% Sky 33%0
  119.  9 PM59° 7% Sky 33%0
  120.  10 PM58° 3% Sky 18%10
  121.  11 PM57° 3% Sky 18%10
  122. Mon 11/212 AM56° 3% Sky 18%10
  123.  1 AM55° 3% Sky 18%5
  124.  2 AM54° 3% Sky 18%5
  125.  3 AM54° 3% Sky 18%5
  126.  4 AM54° 1% Sky 6%5
  127.  5 AM54° 1% Sky 6%5
  128.  6 AM54° 1% Sky 6%5
  129.  7 AM56° 1% Sky 6%5
  130.  8 AM59° 1% Sky 6%5
  131.  9 AM63° 1% Sky 6%5
  132.  10 AM67° 0% Sky 8%0
  133.  11 AM70° 0% Sky 8%0
  134.  12 PM72° 0% Sky 8%0
  135.  1 PM73° 0% Sky 8%0
  136.  2 PM74° 0% Sky 8%0
  137.  3 PM73° 0% Sky 8%0
  138.  4 PM72° 0% Sky 14%0
  139.  5 PM69° 0% Sky 14%0
  140.  6 PM66° 0% Sky 14%0
  141.  7 PM63° 0% Sky 14%0
  142.  8 PM61° 0% Sky 14%0
  143.  9 PM60° 0% Sky 14%0
  144.  10 PM59° 1% Sky 10%10g18
  145.  11 PM58° 1% Sky 10%10g18
  146. Tue 11/312 AM57° 1% Sky 10%10g18
  147.  1 AM56° 1% Sky 10%5g12
  148.  2 AM55° 1% Sky 10%5g12
  149.  3 AM55° 1% Sky 10%5g12
  150.  4 AM55° 3% Sky 26%5
  151.  5 AM55° 3% Sky 26%5
  152.  6 AM55° 3% Sky 26%5
  153.  7 AM57° 3% Sky 26%5
  154.  8 AM61° 3% Sky 26%5
  155.  9 AM65° 3% Sky 26%5
  156.  10 AM69° 4% Sky 26%0

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

NWS hourly forecast updated 10/27/2026, 11:26 PM PT

Radar and satellite

National radar

NEXRAD (last 50 min) and GOES

Latest

Nearby hazards

California hazards

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

  • Severe storm outlook today:No thunderstorm risk area over this locationOutlook 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: NORTE Fire (570 acres), LAC-385755 Fire, LAC-385757 Fire, LAC-385891 Fire, CACTUS Fire

UV and air quality forecast

EPA and AirNow

AQI forecast today (Pomona Walnut Vly)
56ModeratePM2.5

UV index guide · Air quality

Drought

By county

Los Angeles County, week of 10/20/2026

7% of the county is abnormally dry. No drought.

Sun and moon

Local time, center of the area

Sunrise
7:07 AM
Sunset
6:02 PM
Daylight
10 hr 55 min
Moon
Waning Gibbous 95% lit
First light (civil dawn)
6:42 AM
Last light (civil dusk)
6:28 PM
Moonrise
7:47 PM
Moonset
10:05 AM

Normal October weather

Climate

Normal October high 81°, low 54°, precipitation 0.97 in for the month. 1991 to 2020 normals at Pomona/Fairplex, 6 mi away.

Other places nearby

Data sources

See something wrong? Request a correction

Frequently asked questions

What is the high temperature today in Walnut, CA?
The National Weather Service forecast for wednesday calls for a high near 76°F. Patchy Fog then Partly Sunny.
Will it rain in Walnut, CA 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 is the 10-day forecast for Walnut, CA?
The first 7 days come from the National Weather Service forecast. Days 8 to 10 (Nov 4 to Nov 6) come from the NOAA National Blend of Models, with highs of 69°F to 72°F. Model guidance this far out often changes.
What time is sunrise and sunset in Walnut, CA today?
Sunrise is about 7:07 AM PDT and sunset is about 6:02 PM PDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Walnut, CA?
At Pomona/Fairplex, the 1991 to 2020 normal high in October is 81°F and the normal low is 54°F.

About this data

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