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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Scenic settlement spot on the foot of the iconic San Bernardino Mountains in California, with a view of the snow peaks of the San Gorgiono mountains
Weather in January
January is a comfortable winter month in San Bernardino, California, with an average temperature varying between 44.6°F (7°C) and 62.2°F (16.8°C). At the onset of January, San Bernardino records an average high-temperature of a comfortable 62.2°F (16.8°C), showing little deviation from the preceding month. Weather in January »
Weather in February
The last month of the winter, February, is another comfortable month in San Bernardino, California, with an average temperature fluctuating between 43.5°F (6.4°C) and 62.4°F (16.9°C). San Bernardino, California, records a slight change with February's average high-temperatures adjusting to a still refreshing 62.4°F (16.9°C) from January's 62.2°F (16.8°C). Weather in February »
Weather in March
March, the first month of the spring in San Bernardino, is also an enjoyable month, with temperature in the range of an average high of 66.9°F (19.4°C) and an average low of 45.7°F (7.6°C). San Bernardino's weather in March, with an average high-temperature of a still comfortable 66.9°F (19.4°C), subtly shifts from February's 62.4°F (16.9°C). Weather in March »
Weather in April
April is a pleasant spring month in San Bernardino, California, with an average temperature varying between 71.4°F (21.9°C) and 48.7°F (9.3°C). San Bernardino's weather in April, with an average high-temperature of an agreeable 71.4°F (21.9°C), subtly shifts from March's 66.9°F (19.4°C). Weather in April »
Weather in May
May, the last month of the spring in San Bernardino, is a warm month, with temperature in the range of an average high of 76.5°F (24.7°C) and an average low of 52.7°F (11.5°C). The arrival of May brings an average high-temperature of a warm 76.5°F (24.7°C), closely following the temperature pattern of April. Weather in May »
Weather in June
The first month of the summer, June, is also a moderately hot month in San Bernardino, California, with temperature in the range of an average low of 58.5°F (14.7°C) and an average high of 85.1°F (29.5°C). As San Bernardino enters June, the average high-temperature marginally increases from the a warm 76.5°F (24.7°C) of May to a still moderately hot 85.1°F (29.5°C). Weather in June »
Weather in July
July in San Bernardino, California, is a tropical summer month, with an average temperature fluctuating between 91°F (32.8°C) and 64.9°F (18.3°C). July witnesses a minor rise in the average high-temperature, transitioning from a moderately hot 85.1°F (29.5°C) in June to a tropical 91°F (32.8°C). Weather in July »
Weather in August
August, the last month of the summer in San Bernardino, is another hot month, with temperature in the range of an average low of 65.8°F (18.8°C) and an average high of 91.9°F (33.3°C). August, on average, is the warmest month, registering a high temperature of 91.9°F (33.3°C) and a low of 65.8°F (18.8°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a hot month in San Bernardino, California, with an average temperature varying between 87.4°F (30.8°C) and 63.3°F (17.4°C). The start of September marks an average high-temperature of a still hot 87.4°F (30.8°C), hardly distinguishable from the conditions in August. Weather in September »
Weather in October
October, like September, in San Bernardino, California, is another warm autumn month, with an average temperature varying between 56.3°F (13.5°C) and 78.1°F (25.6°C). The start of October comes with a reduction in the average high-temperature, receding from a hot 87.4°F (30.8°C) in September to a warm 78.1°F (25.6°C). Weather in October »
Weather in November
November, the last month of the autumn in San Bernardino, is also an agreeable month, with an average temperature ranging between min 49.1°F (9.5°C) and max 68.9°F (20.5°C). With the onset of November, San Bernardino experiences a modest temperature adjustment, with the average high-temperature receding from a warm 78.1°F (25.6°C) in October to an agreeable 68.9°F (20.5°C). Weather in November »
Weather in December
December, the first month of the winter in San Bernardino, is still a refreshing month, with temperature in the range of an average high of 59.9°F (15.5°C) and an average low of 43.7°F (6.5°C). December, recording an average high temperature of 59.9°F (15.5°C) and a low temperature of 43.7°F (6.5°C), is San Bernardino's coldest month. Weather in December »
Updated: Feb 9, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How much does it rain in San Bernardino?
Throughout the year, in San Bernardino, California, there are 46.6 rainfall days, and 6.18" (157mm) of precipitation is accumulated.
When it does not snow in San Bernardino?
January, March through December are months without snowfall in San Bernardino.
How many days does it snow in San Bernardino?
In San Bernardino, California, during the entire year, snow falls for 0.1 days.
What is the most humid month in San Bernardino?
The most humid month is February, with an average relative humidity of 53%.
When does it snow in San Bernardino?
February is the only month when snow falls in San Bernardino, California.
What is the snowiest month in San Bernardino?
February has the most snowfall days of the year. Snow falls for 0.1 days.
When is Daylight Saving Time (DST) in San Bernardino?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
What is the driest month in San Bernardino?
The month with the least rainfall is June, when the rain falls for 1.2 days and typically collects 0.04" (1mm) of precipitation.
When are the longest days in San Bernardino?
With an average of 14h and 24min of daylight, June has the longest days of the year in San Bernardino, California.
When is the highest UV index in San Bernardino?
The months with the highest UV index are June through August, with an average maximum UV index of 7.
What month has the most sunshine in San Bernardino?
July has the most sunshine of the year in San Bernardino, with an average of 12.2h of sunshine.
What part of the year is the hottest in San Bernardino?
August brings the highest temperatures in San Bernardino, with an average high of 91.9°F (33.3°C) and an average low of 65.8°F (18.8°C).
What is the least humid month in San Bernardino?
The least humid month is August, with an average relative humidity of 38%.
What is the coldest time of year in San Bernardino?
December, characterized by an average high temperature of 59.9°F (15.5°C) and a low temperature of 43.7°F (6.5°C), is generally the coldest month in San Bernardino, California.
What is the wettest month in San Bernardino?
December is the month with the most rainfall. Rain falls for 6 days and accumulates 1.42" (36mm) of precipitation.
What is the month with the shortest days in San Bernardino?
With an average of 9h and 54min of daylight, December has the shortest days of the year.
What is the month with the least sunshine in San Bernardino?
December has the least sunshine of the year in San Bernardino, with an average of 6.9h of sunshine.
What is the month with the lowest UV index in San Bernardino?
With an average maximum UV index of 3, December is the month with the lowest UV index in San Bernardino.
Average temperature
San Bernardino, CA
The warmest month (with the highest average high temperature) is August (91.9°F).
The month with the lowest average high temperature is December (59.9°F).
The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (43.5°F).
Average pressure
San Bernardino, CA
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.04"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.89"Hg - Average pressure in June:
29.85"Hg
- Average pressure in July:
29.88"Hg - Average pressure in August:
29.87"Hg - Average pressure in September:
29.87"Hg - Average pressure in October:
29.93"Hg - Average pressure in November:
30.02"Hg - Average pressure in December:
30.07"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed
San Bernardino, CA
- Average wind speed in January:
5.3mph - Average wind speed in February:
5.2mph - Average wind speed in March:
5.5mph - Average wind speed in April:
6mph - Average wind speed in May:
6mph - Average wind speed in June:
5.5mph
- Average wind speed in July:
5.1mph - Average wind speed in August:
4.8mph - Average wind speed in September:
4.5mph - Average wind speed in October:
4.8mph - Average wind speed in November:
5.1mph - Average wind speed in December:
5.2mph
The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity
San Bernardino, CA
The month with the highest relative humidity is February (53%).
The month with the lowest relative humidity is August (38%).
Average rainfall
San Bernardino, CA
- Average rainfall in January:
0.91" - Average rainfall in February:
1.3" - Average rainfall in March:
0.71" - Average rainfall in April:
0.67" - Average rainfall in May:
0.16" - Average rainfall in June:
0.04"
- Average rainfall in July:
0.2" - Average rainfall in August:
0.08" - Average rainfall in September:
0.08" - Average rainfall in October:
0.12" - Average rainfall in November:
0.51" - Average rainfall in December:
1.42"
The wettest month (with the highest rainfall) is December (1.42").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days
San Bernardino, CA
- Average rainfall days in January:
5.8 days - Average rainfall days in February:
5.5 days - Average rainfall days in March:
6.7 days - Average rainfall days in April:
5.9 days - Average rainfall days in May:
3.6 days - Average rainfall days in June:
1.2 days
- Average rainfall days in July:
3.1 days - Average rainfall days in August:
1.7 days - Average rainfall days in September:
1.9 days - Average rainfall days in October:
1.8 days - Average rainfall days in November:
3.4 days - Average rainfall days in December:
6 days
The month with the highest number of rainy days is March (6.7 days).
The month with the least rainy days is June (1.2 days).
Average snowfall days
San Bernardino, CA
- Average snowfall days in January:
0 days - Average snowfall days in February:
0.1 days - Average snowfall days in March:
0 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight / Average sunshine
San Bernardino, CA
- Average daylight in January:
10h and 1min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 0min - Average daylight in June:
14h and 2min
- Average daylight in July:
14h and 1min - Average daylight in August:
13h and 2min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 2min - Average daylight in December:
9h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in January:
7h and 0min - Average sunshine in February:
7h and 0min - Average sunshine in March:
8h and 5min - Average sunshine in April:
11h and 2min - Average sunshine in May:
11h and 5min - Average sunshine in June:
12h and 1min
- Average sunshine in July:
12h and 1min - Average sunshine in August:
12h and 1min - Average sunshine in September:
10h and 4min - Average sunshine in October:
9h and 0min - Average sunshine in November:
7h and 2min - Average sunshine in December:
6h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).
Average sunshine days
San Bernardino, CA
- Average sunshine days in January:
24.2 days - Average sunshine days in February:
21.7 days - Average sunshine days in March:
24.2 days - Average sunshine days in April:
23.3 days - Average sunshine days in May:
26.1 days - Average sunshine days in June:
27.9 days
- Average sunshine days in July:
25.8 days - Average sunshine days in August:
27.7 days - Average sunshine days in September:
26.7 days - Average sunshine days in October:
27.9 days - Average sunshine days in November:
25.7 days - Average sunshine days in December:
24.3 days
The months with the most sunshine days are June and October (27.9 days).
The month with the least sunshine days is February (21.7 days).
Average UV index
San Bernardino, CA
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover
San Bernardino, CA
The months with the most cloud cover are February and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility
San Bernardino, CA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
San Bernardino, California, USA
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