San Bernardino County, CA Weather Forecast
County weather hub
Sunny
Compare major city weather across San Bernardino County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny. High near 110, with temperatures falling to around 108 in the afternoon. South southwest wind around 12 mph.
County Weather Overview
This county weather page brings together forecast coverage for San Bernardino County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 27 of 27 mapped cities in San Bernardino County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Aug 23 to Aug 29, 2026
- Latest sync
- Aug 23, 2026 6:32 PM PDT
- Forecast office
- VEF
- Source
- NOAA / NWS
Daily Outlook
This Week in San Bernardino County
This Afternoon looks like the warmest upcoming period in San Bernardino County at 110 degrees F.
Saturday Night is the coolest period ahead with temperatures near 81 degrees F.
The strongest winds are forecast for Saturday Night at about 5 to 20 mph W.
The forecast from Aug 23 through Aug 29 stays mostly dry.
Forecast Details
- Last updated
- Aug 23, 2026 6:32 PM PDT
- Coverage
- 8 days
- Time zone
- America/Los_Angeles
- Forecast office
- VEF
- Radar station
- KEYX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear. Low around 82, with temperatures rising to around 84 overnight. West southwest wind 2 to 13 mph, with gusts as high as 20 mph.
Mostly sunny. High near 107, with temperatures falling to around 105 in the afternoon. South wind 1 to 8 mph.
Mostly clear, with a low around 82. Southwest wind 5 to 8 mph.
Sunny, with a high near 108. Northwest wind 3 to 7 mph.
Mostly clear, with a low around 83.
Sunny, with a high near 109.
Mostly clear, with a low around 83.
Sunny, with a high near 110.
Mostly clear, with a low around 83.
Sunny, with a high near 109.
Mostly clear, with a low around 82.
Sunny, with a high near 109.
Mostly clear, with a low around 81.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Aug 23
|
Sunny
|
110°F |
12 mph
SSW
|
|
Tonight
Aug 23
|
Mostly Clear
|
82°F |
2 to 13 mph
WSW
|
|
Monday
Aug 24
|
Mostly Sunny
|
107°F |
1 to 8 mph
S
|
|
Monday Night
Aug 24
|
Mostly Clear
|
82°F |
5 to 8 mph
SW
|
|
Tuesday
Aug 25
|
Sunny
|
108°F |
3 to 7 mph
NW
|
|
Tuesday Night
Aug 25
|
Mostly Clear
|
83°F |
7 to 13 mph
WNW
|
|
Wednesday
Aug 26
|
Sunny
|
109°F |
3 to 7 mph
NW
|
|
Wednesday Night
Aug 26
|
Mostly Clear
|
83°F |
6 to 15 mph
W
|
|
Thursday
Aug 27
|
Sunny
|
110°F |
3 to 12 mph
W
|
|
Thursday Night
Aug 27
|
Mostly Clear
|
83°F |
5 to 13 mph
W
|
|
Friday
Aug 28
|
Sunny
|
109°F |
2 to 9 mph
WNW
|
|
Friday Night
Aug 28
|
Mostly Clear
|
82°F |
5 to 13 mph
W
|
|
Saturday
Aug 29
|
Sunny
|
109°F |
3 to 12 mph
WNW
|
|
Saturday Night
Aug 29
|
Mostly Clear
|
81°F |
5 to 20 mph
W
|
Major City Forecasts
Live forecast snapshots for major cities across San Bernardino County.
Coverage
Forecast coverage currently spans 27 of 27 mapped cities in San Bernardino County.
Largest mapped city population in this region: 217,491.
