What is the weather in Grand Terrace, CA right now?

The latest observation from San Bernardino Intl. Airport was 70°F and clear, reported at 10/26/2026, 7:52 PM PDT.

Will it rain in Grand Terrace, 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 Grand Terrace, CA?

The first 8 days come from the National Weather Service forecast. Days 9 to 10 (Nov 3 to Nov 4) come from the NOAA National Blend of Models, with highs of 69°F to 71°F. Model guidance this far out often changes.

What time is sunrise and sunset in Grand Terrace, CA today?

Sunrise is about 7:03 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 Grand Terrace, CA?

At Riverside Citrus Exp, the 1991 to 2020 normal high in October is 82°F and the normal low is 55°F.

Checked Oct 26, 2026

Grand Terrace, CA Weather

Current conditions, hourly and 10-day forecast from the National Weather Service. Times are local (PDT).

Grand Terrace, CA current weather

70°F

Clear

H -- / L 56°Feels like 70°

Wildfire smoke overhead: light
No rain expected in the next 12 hours

Observed at San Bernardino Intl. Airport (5.5 mi away), 10/26/2026, 7:52 PM PDT

Hourly forecast

NWS, updated 12:18 PM

Now66°
9 PM65°
10 PM63°
11 PM62°
Tue12 AM60°
1 AM59°
2 AM58°
3 AM57°
4 AM57°
5 AM56°
6 AM56°
7 AM56°
8 AM57°
9 AM60°
10 AM65°
11 AM68°
12 PM70°
1 PM72°
2 PM74°
3 PM74°
4 PM74°
5 PM73°
6 PM71°
7 PM69°
8 PM65°
9 PM63°
10 PM62°
11 PM61°
Wed12 AM59°
1 AM58°
2 AM57°
3 AM56°
4 AM56°
5 AM56°
6 AM55°
7 AM55°
8 AM56°
9 AM59°
10 AM63°
11 AM67°
12 PM70°
1 PM72°
2 PM72°
3 PM73°
4 PM73°
5 PM71°
6 PM69°
7 PM66°

10-day forecast

Tap a day for details

Today10/26Low 56°High
Tonight: Clear, with a low around 56. South wind 0 to 5 mph.
Clear
Tue10/27Low 55°High 75°
Tuesday: Sunny, with a high near 75. Southwest wind 0 to 5 mph.
Tuesday Night: Partly cloudy, with a low around 55. South wind 0 to 5 mph.
Sunny
Wed10/28Low 56°High 73°
Wednesday: Mostly sunny, with a high near 73. South wind 0 to 5 mph.
Wednesday Night: Mostly cloudy, with a low around 56. East wind around 0 mph.
Mostly Sunny
Thu10/2915% chance of precipitationLow 57°High 71°
Thursday: Partly sunny, with a high near 71.
Thursday Night: A slight chance of rain showers after 5am. Mostly cloudy, with a low around 57.
Partly Sunny
Fri10/3034% chance of precipitationLow 57°High 67°
Friday: A chance of rain showers. Partly sunny, with a high near 67.
Friday Night: A chance of rain showers. Mostly cloudy, with a low around 57.
Chance Rain Showers
Sat10/3162% chance of precipitationLow 56°High 65°
Saturday: A chance of rain showers. Partly sunny, with a high near 65.
Saturday Night: Rain showers likely. Mostly cloudy, with a low around 56.
Chance Rain Showers
Sun11/160% chance of precipitationLow 53°High 63°
Sunday: Rain showers likely. Mostly cloudy, with a high near 63.
Sunday Night: A chance of rain showers. Mostly cloudy, with a low around 53.
Rain Showers Likely
Mon11/217% chance of precipitationLow High 67°
Monday: A slight chance of rain showers before 4pm. Mostly sunny, with a high near 67.
Slight Chance Rain Showers
Model blend
Tue11/3Model blend16% chance of precipitationLow 54°High 71°
Tuesday: Mostly sunny. High near 71°. Low that night near 54°.
Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.
Wed11/4Model blend10% chance of precipitationLow 54°High 69°
Wednesday: Mostly sunny. High near 69°. Low that night near 54°.
Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

Forecast for 34.031, -117.310 from the NWS SGX office, updated 10/26/2026, 12:18 PM PDT · Official forecast on weather.gov

Days 9 to 10: NOAA National Blend of Models, station KSBD (San Bernardino Intl, 5 mi), model run 10/26/2026, 7:00 PM PDT

Forecaster's discussionIssued 10/26/2026, 5:09 PM PDT

Synopsis

Near to slightly below average temperatures expected today and tomorrow, with a cooling trend into the end of the week. Unsettled weather is expected for the weekend with increased winds and chances of precipitation. Tides will remain elevated through much of this week.

Discussion

FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE: SAN DIEGO: WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES:

: UPDATED AVIATION DISCUSSION:

At noon, temperatures were running within a few degrees of what the temperatures were at noon yesterday. Cooling is expected to start to spread inland as onshore flow gradually increases over the next few days. Widespread below average temperatures are expected through much of this week with highs on Saturday and Sunday running 10 to 20 degrees below average for inland locations. Patchy marine layer low clouds and fog may develop tonight into Tuesday morning near the coast. Low cloud and fog coverage is expected to become more widespread for Tuesday night into Wednesday and will remain persistent each night and morning through the week.

The weather becomes unsettled for the second half of the week with the center of a closed low near the Pacific Northwest coast for Thursday through Sunday. A nearly zonal subtropical jet stream from the central and eastern Pacific into northern Baja will strengthen for Friday and Saturday, possibly transporting a low pressure into northern Baja or far southern California some time around late Saturday into Sunday. There remains a lot of uncertainty in the details of the forecast this weekend, but there is increasing confidence that the bulk of the precipitation won't arrive until Sunday. That being said, periods of on and off light showers may develop as early as Friday or Saturday. Given the uncertainties on if the bulk of the moisture will be transported into Southern California or northern Baja, there is quite a range of potential rainfall totals. The GFS has been trending wetter, with the bulk of the moisture plume closer to Southern California. On the other hand the ECMWF solutions continue to show the bulk of the moisture to our south and east. For context, the range of potential outcomes for 24 hour precipitation totals Sunday are 1.5 to 2.5 inches on the high end and near 0.10 to 0.25 inches on the low end.

In addition to rain, winds are expected to increase over the mountains and deserts. There remains uncertainty in the wind speeds, which will largely be determined by the track of the system. This looks like a warm system, which will keep the snow level near and about 8500 ft. Interested parties should continue to monitor the forecast in the coming days due to the moderate to high uncertainty in the details.

Aviation

270000Z: Mostly clear and VFR conditions this evening across the region. ~30-40% chance for cigs tonight (07-14z) along the SD County coast. Bases 700-1200 feet MSL. Cigs that occur are expected to be intermittent, likely not lasting more than an hour, and fully scatter out by 15Z. Better chance for coastal cigs later Tuesday afternoon.

Marine

No hazardous marine conditions are expected through Friday, except for a few wind gusts exceeding 20 knots in the outer coastal waters through this evening.

Beaches

High tides during the late mornings will generate significant coastal flooding this week. Tides will be anywhere from 1.5 to 1.7 feet above astronomical predictions, likely raising high tides above 8 feet, peaking Tuesday morning. A Coastal Flood Warning contains the details.

Skywarn

Skywarn activation is not requested. However weather spotters are encouraged to report significant weather conditions.

Watches, warnings and advisories

CA: Coastal Flood Warning until 1 PM PDT Thursday for Orange County Coastal Areas-San Diego County Coastal Areas.

PZ: 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

Now66°Clear0%5 mph
9 PM65°Clear0%5 mph
10 PM63°Clear0%5 mph
11 PM62°Clear0%5 mph
12 AM60°Clear0%0 mph
1 AM59°Clear0%0 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow

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

MonNow66° 0% Sky 3%5g12
9 PM65° 0% Sky 3%5
10 PM63° 0% Sky 3%5
11 PM62° 0% Sky 5%5
Tue 10/2712 AM60° 0% Sky 5%0g7
1 AM59° 0% Sky 5%0g6
2 AM58° 0% Sky 4%0g6
3 AM57° 0% Sky 4%0g7
4 AM57° 0% Sky 4%0g6
5 AM56° 0% Sky 4%0g7
6 AM56° 0% Sky 4%0g6
7 AM56° 0% Sky 4%0g7
8 AM57° 0% Sky 4%0g7
9 AM60° 0% Sky 4%0g6
10 AM65° 0% Sky 4%0
11 AM68° 0% Sky 9%0g6
12 PM70° 0% Sky 9%0g7
1 PM72° 0% Sky 9%5
2 PM74° 0% Sky 10%5g10
3 PM74° 0% Sky 10%5g10
4 PM74° 0% Sky 10%5g10
5 PM73° 0% Sky 26%5g12
6 PM71° 0% Sky 26%5g13
7 PM69° 0% Sky 26%5g10
8 PM65° 0% Sky 26%0g6
9 PM63° 0% Sky 26%0g7
10 PM62° 0% Sky 26%0g7
11 PM61° 0% Sky 29%5
Wed 10/2812 AM59° 0% Sky 29%5g10
1 AM58° 0% Sky 29%5g10
2 AM57° 0% Sky 29%5g10
3 AM56° 0% Sky 29%5g10
4 AM56° 0% Sky 29%5g10
5 AM56° 0% Sky 30%5
6 AM55° 0% Sky 30%5
7 AM55° 0% Sky 30%5
8 AM56° 0% Sky 30%0g6
9 AM59° 0% Sky 30%0
10 AM63° 0% Sky 30%0
11 AM67° 0% Sky 39%0
12 PM70° 0% Sky 39%0g6
1 PM72° 0% Sky 39%0g5
2 PM72° 0% Sky 39%0
3 PM73° 0% Sky 39%5
4 PM73° 0% Sky 39%5
5 PM71° 0% Sky 47%5
6 PM69° 0% Sky 47%0
7 PM66° 0% Sky 47%0
8 PM64° 0% Sky 47%0g6
9 PM62° 0% Sky 47%0g7
10 PM61° 0% Sky 47%0g7
11 PM60° 0% Sky 58%0g7
Thu 10/2912 AM59° 0% Sky 58%0g7
1 AM58° 0% Sky 58%0g6
2 AM57° 0% Sky 58%0g6
3 AM57° 0% Sky 58%0g6
4 AM57° 0% Sky 58%0g6
5 AM57° 0% Sky 73%0g6
6 AM57° 0% Sky 73%0g6
7 AM57° 0% Sky 73%0g6
8 AM58° 0% Sky 73%0g7
9 AM60° 0% Sky 73%0g7
10 AM64° 0% Sky 73%0g7
11 AM66° 0% Sky 61%0g6
12 PM68° 0% Sky 61%0g6
1 PM70° 0% Sky 61%0g6
2 PM70° 0% Sky 61%0g6
3 PM71° 0% Sky 61%0g6
4 PM70° 0% Sky 61%0g6
5 PM69° 1% Sky 53%0g9
6 PM67° 1% Sky 53%0g9
7 PM65° 1% Sky 53%0g9
8 PM63° 1% Sky 53%0g6
9 PM62° 1% Sky 53%0g6
10 PM61° 1% Sky 53%0g6
11 PM61° 9% Sky 73%5
Fri 10/3012 AM60° 9% Sky 73%5
1 AM60° 9% Sky 73%5
2 AM59° 9% Sky 73%0g6
3 AM59° 9% Sky 73%0g6
4 AM59° 9% Sky 73%0g6
5 AM59° 15% Sky 79%0g5
6 AM58° 15% Sky 79%0g5
7 AM58° 15% Sky 79%0g5
8 AM58° 15% Sky 79%0g6
9 AM60° 15% Sky 79%0g6
10 AM62° 15% Sky 79%0g6
11 AM64° 16% Sky 60%0g7
12 PM65° 16% Sky 60%0g7
1 PM66° 16% Sky 60%0g7
2 PM66° 16% Sky 60%0g12
3 PM66° 16% Sky 60%0g12
4 PM66° 16% Sky 60%0g12
5 PM65° 30% Sky 53%5g12
6 PM64° 30% Sky 53%5g12
7 PM63° 30% Sky 53%5g12
8 PM62° 30% Sky 53%5
9 PM61° 30% Sky 53%5
10 PM61° 30% Sky 53%5
11 PM60° 34% Sky 64%5g13
Sat 10/3112 AM59° 34% Sky 64%5g13
1 AM59° 34% Sky 64%5g13
2 AM58° 34% Sky 64%5
3 AM58° 34% Sky 64%5
4 AM58° 34% Sky 64%5
5 AM58° 29% Sky 68%0g6
6 AM58° 29% Sky 68%0g6
7 AM58° 29% Sky 68%0g6
8 AM58° 29% Sky 68%0g6
9 AM59° 29% Sky 68%0g6
10 AM61° 29% Sky 68%0g6
11 AM62° 35%0.01"Sky 65%0g6
12 PM63° 35%0.01"Sky 65%0g6
1 PM64° 35%0.01"Sky 65%0g6
2 PM64° 35%0.01"Sky 65%0g12
3 PM64° 35%0.01"Sky 65%0g12
4 PM64° 35%0.01"Sky 65%0g12
5 PM63° 46%0.01"Sky 69%0g9
6 PM62° 46%0.01"Sky 69%0g9
7 PM61° 46%0.01"Sky 69%0g9
8 PM60° 46%0.01"Sky 69%0g5
9 PM60° 46%0.01"Sky 69%0g5
10 PM60° 46%0.01"Sky 69%0g5
11 PM60° 62%0.04"Sky 81%5
Sun 11/112 AM59° 62%0.04"Sky 81%5
1 AM58° 62%0.04"Sky 81%5
1 AM57° 62%0.04"Sky 81%5
2 AM57° 62%0.04"Sky 81%5
3 AM57° 62%0.04"Sky 81%5
4 AM57° 60%0.07"Sky 78%0g6
5 AM56° 60%0.07"Sky 78%0g6
6 AM56° 60%0.07"Sky 78%0g6
7 AM56° 60%0.07"Sky 78%0g5
8 AM57° 60%0.07"Sky 78%0g5
9 AM58° 60%0.07"Sky 78%0g5
10 AM60° 55%0.04"Sky 70%0g9
11 AM61° 55%0.04"Sky 70%0g9
12 PM62° 55%0.04"Sky 70%0g9
1 PM63° 55%0.04"Sky 70%0g12
2 PM63° 55%0.04"Sky 70%0g12
3 PM62° 55%0.04"Sky 70%0g12
4 PM61° 45%0.01"Sky 63%0g10
5 PM60° 45%0.01"Sky 63%0g10
6 PM59° 45%0.01"Sky 63%0g10
7 PM58° 45%0.01"Sky 63%0g10
8 PM57° 45%0.01"Sky 63%0g10
9 PM57° 45%0.01"Sky 63%0g10
10 PM56° 29% Sky 53%10g16
11 PM55° 29% Sky 53%10g16
Mon 11/212 AM54° 29% Sky 53%10g16
1 AM54° 29% Sky 53%10g16
2 AM54° 29% Sky 53%10g16
3 AM54° 29% Sky 53%10g16
4 AM54° 17% Sky 41%5
5 AM54° 17% Sky 41%5
6 AM53° 17% Sky 41%5

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

NWS hourly forecast updated 10/26/2026, 12:18 PM PDT

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-384174 Fire, LAC-384992 Fire, LAC-385755 Fire, LAC-385891 Fire

Drought

By county

San Bernardino County, week of 10/20/2026

53% of the county is in moderate drought or worse.

Frequently asked questions

What is the weather in Grand Terrace, CA right now?: The latest observation from San Bernardino Intl. Airport was 70°F and clear, reported at 10/26/2026, 7:52 PM PDT.
Will it rain in Grand Terrace, 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 Grand Terrace, CA?: The first 8 days come from the National Weather Service forecast. Days 9 to 10 (Nov 3 to Nov 4) come from the NOAA National Blend of Models, with highs of 69°F to 71°F. Model guidance this far out often changes.
What time is sunrise and sunset in Grand Terrace, CA today?: Sunrise is about 7:03 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 Grand Terrace, CA?: At Riverside Citrus Exp, the 1991 to 2020 normal high in October is 82°F and the normal low is 55°F.

Sun and moon

Local time, center of the area

Sunrise: 7:03 AM
Sunset: 6:02 PM
Daylight: 10 hr 59 min
Moon: Full Moon 99% lit

First light (civil dawn): 6:38 AM
Last light (civil dusk): 6:28 PM
Moonrise: 6:07 PM
Moonset: 7:39 AM

Normal October weather

Climate

Normal October high 82°, low 55°, precipitation 0.40 in for the month. 1991 to 2020 normals at Riverside Citrus Exp, 5 mi away.

Other places nearby

Data sources

National Weather Service APINOAA
National Blend of Models (NBM) text guidanceNOAA National Weather Service
Convective Outlooks and Storm ReportsNOAA Storm Prediction Center
Excessive Rainfall Outlook and Quantitative Precipitation ForecastsNOAA Weather Prediction Center
National Water Prediction ServiceNOAA National Weather Service
WFIGS Current Wildland Fire IncidentsNational Interagency Fire Center
Hazard Mapping System Smoke AnalysisNOAA NESDIS Office of Satellite and Product Operations
UV Index Forecast (Envirofacts)U.S. Environmental Protection Agency and NOAA
AirNowU.S. Environmental Protection Agency
NWS HeatRisk (experimental)NOAA National Weather Service
U.S. Drought MonitorNational Drought Mitigation Center, USDA and NOAA
BEACON 2.0 Beach Advisory and Closing On-line NotificationU.S. Environmental Protection Agency
U.S. Climate Normals 1991-2020NOAA National Centers for Environmental Information
Tides & Currents (CO-OPS API)NOAA Center for Operational Oceanographic Products and Services
NEXRAD radar tilesIowa Environmental Mesonet, Iowa State University
GOES-East and GOES-West GeoColor imageryNOAA NESDIS Center for Satellite Applications and Research

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