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San Bernardino County (Big Bear Lake)
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United States weather

10 day weather forecast for San Bernardino County

Sunday, September 20th, 2026, at 04:31 AM
today
Overcast
25° 16°
tomorrow
Sunny
21° 13°
Tuesday
Sunny
22° 12°
Wednesday
Sunny
26° 15°
Thursday
Sunny
26° 16°
Friday
Sunny
26° 16°
Saturday
Sunny
25° 17°
 More Details See
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San Bernardino County Weather Pages

San Bernardino County weather forecast

The weather forecast for San Bernardino County over the next 5 days indicates comfortably dry conditions with temperatures ranging from 21 °F to 26 °F.

Wind speeds are expected to be breezy, averaging around 16 km/h.

Weather today
San Bernardino County weather forecast

San Bernardino County 14 days weather forecast

This weeks weather in San Bernardino County. Click on a date for detailed forecasts
Sun. 20
25°
16°
Overcast
0 mm
Mon. 21
21°
13°
Sunny
0 mm
Tue. 22
22°
12°
Sunny
0 mm
Wed. 23
26°
15°
Sunny
0 mm
Thu. 24
26°
16°
Sunny
0 mm
Fri. 25
26°
16°
Sunny
0 mm
Sat. 26
25°
17°
Sunny
0 mm
Sun. 27
25°
15°
Sunny
0 mm
Mon. 28
24°
15°
Sunny
0 mm
Tue. 29
21°
10°
Sunny
0 mm
Wed. 30
17°
9°
Sunny
0 mm
Thu. 1
19°
7°
Sunny
0 mm
Fri. 2
20°
9°
Sunny
0 mm
Further Ahead
Select a date

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Access San Bernardino County weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
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San Bernardino County long range weather forecast

30 day weather forecast for San Bernardino County
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
26°
2
Sunny
24°
3
Sunny
24°
4
Sunny
24°
5
Partly cloudy
26°
6
Cloudy
24°
7
Patchy rain possible
25°
8
Patchy light drizzle
25°
9
Patchy rain possible
25°
10
Sunny
24°
11
Sunny
23°
12
Partly cloudy
23°
13
Sunny
23°
14
Sunny
25°
15
Sunny
23°
16
Sunny
19°
17
Cloudy
21°
18
Sunny
21°
19
Sunny
21°
20
Overcast
25°
21
Sunny
21°
22
Sunny
22°
23
Sunny
26°
24
Sunny
26°
25
Sunny
26°
26
Sunny
25°
27
Sunny
25°
28
Sunny
24°
29
Sunny
21°
30
Sunny
17°
Important Notice
Our San Bernardino County long range weather forecast is based on historical data analysis rather than real-time forecasting models. While this provides a general outlook, weather conditions can change. We recommend checking the forecast closer to your planned date for the most current information.

Rain Forecast for the Next 14 Days in San Bernardino County

The chart displays the expected rainfall values (in mm) over the next 14 days in San Bernardino County, highlighting variations in precipitation levels for specific dates. ☔

San Bernardino County Wind Speed Forecast Chart

This chart illustrates the projected daily max wind speed (in km) in San Bernardino County over the next two weeks, providing insights into periods of increased or decreased wind activity. 🌀

Frequently asked questions about the weather in San Bernardino County

How warm is it in San Bernardino County over the next 14 days?
Over the next two weeks, temperatures in San Bernardino County are expected to range from around 7 °F on the coldest nights up to about 26 °F on the warmest days. Use this range to plan what to pack and wear.

Will it rain in San Bernardino County in the next two weeks?
Yes - rain is expected on about 1 of the next 14 days in San Bernardino County, with roughly 0 mm of rainfall in total. It is worth keeping an umbrella or raincoat handy.

How windy is it in San Bernardino County?
Maximum wind speeds in San Bernardino County are forecast to reach about 20 km/h at their peak over the next 14 days.

When is the best time to visit San Bernardino County?
For a month-by-month look at temperatures and rainfall, see our best time to visit San Bernardino County guide.

How accurate is the 14-day forecast for San Bernardino County?
Our San Bernardino County forecast uses leading meteorological models and is most reliable over the next few days. Long-range days beyond a week show general trends and can change, so check back closer to the date for updates.

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Location coordinates Where is San Bernardino County?

Get accurate weather forecasts for San Bernardino County, located at latitude 34.244 and longitude -116.911. Stay updated with localized weather information tailored for San Bernardino County.

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