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San Bernardino weather in September

Weather in San Bernardino: September

Average day temperature: 91.1°F
Average night temperature: 69.4°F
Number of sunny days: 28 days
Day length: 11.9 - 12.9 hours
Number of rainy days: 0 days
Precipitation totals: 0.1 in.

Air temperature in September, °F

Show year:
2024
2023
2022

The highest day temperature during September of 2024 was 107°F. At the same time the lowest night temperature was 51°F. Day and night temperature averages during September were 88.8°F and 66.1°F.

Sunny, partly cloudy and cloudy days

Mostly all days in September are sunny but cloudy days are also possible.

Precipitation total in September, in.

Precipitation total value in San Bernardino in September is 0.1 in. Other months of the year show relatively similar values.

Wind speed in September, mph

The average wind speed value in September is 3.9 mph

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 11.3.

Best time for vacation in San Bernardino

Sunniest months:
July 30 days
August 28 days
September 28 days
Warmest months:
July 95.7 °F
August 94.9 °F
September 91.1 °F
Coldest months:
January 59.9 °F
December 60.2 °F
February 62.2 °F
Rainiest months:
January 2 days
February 2 days
March 2 days
Windiest months:
May 4.8 mph
March 4.6 mph
April 4.6 mph

San Bernardino on a weather map

San Bernardino
+54°F
SW 2 mph
Feels like: +54°F
Precip.: 0%
Places in USA:
Name
°F
+46°F
+43°F
+73°F
+73°F
+41°F
+55°F
+73°F
+66°F
+48°F
+50°F
+55°F
+64°F
+61°F
+54°F
+32°F
24 Hours Forecast
San Bernardino
Local time: 06:57
November 21, thursday
0900
59°F
SW
1 mph
1200
75°F
NE
3 mph
1500
77°F
NE
3 mph
1800
68°F
S
1 mph
2100
61°F
SW
2 mph
November 22, friday
0000
55°F
SW
2 mph
0300
55°F
SW
2 mph
0600
55°F
W
2 mph
Units of measurement: °C / °F