Climate and monthly weather forecastChester, CA
Climate and monthly weather forecast
Weather in January
January, the same as December, is a wintry winter month in Chester, California, with an average temperature fluctuating between 25.2°F (-3.8°C) and 40.5°F (4.7°C). January welcomes an average high-temperature of a still icy 40.5°F (4.7°C), not much different from the preceding month. Weather in January »Weather in February
The last month of the winter, February, is also an icy month in Chester, California, with temperature in the range of an average high of 40.8°F (4.9°C) and an average low of 25.2°F (-3.8°C). Chester's weather in February indicates an average high-temperature of a still cold 40.8°F (4.9°C), nearly consistent with the 40.5°F (4.7°C) of January. Weather in February »Weather in March
March, the first month of the spring in Chester, is a frosty month, with an average temperature fluctuating between 27.5°F (-2.5°C) and 43.7°F (6.5°C). March begins with an average high-temperature of a chilly 43.7°F (6.5°C), reflecting close similarity to the preceding month. Weather in March »Weather in April
April in Chester, California, is a cool spring month, with an average temperature varying between 31.5°F (-0.3°C) and 51.6°F (10.9°C). April's arrival coincides with a subtle temperature rise, moving from March's chilly 43.7°F (6.5°C) to a cool 51.6°F (10.9°C). Weather in April »Weather in May
May, the last month of the spring in Chester, is a moderate month, with temperature in the range of an average high of 60.3°F (15.7°C) and an average low of 37.6°F (3.1°C). May signals a minor shift in the average high-temperature, moving from April's fresh 51.6°F (10.9°C) to a mild 60.3°F (15.7°C). Weather in May »Weather in June
June, the first month of the summer in Chester, is an agreeable month, with an average temperature ranging between min 44.4°F (6.9°C) and max 71.8°F (22.1°C). The start of June brings a shift in the average high-temperature, increasing from May's refreshing 60.3°F (15.7°C) to an agreeable 71.8°F (22.1°C). Weather in June »Weather in July
July in Chester, California, is a moderately hot summer month, with an average temperature ranging between min 49.5°F (9.7°C) and max 81.3°F (27.4°C). July stands out as Chester's warmest month, with an average high-temperature of 81.3°F (27.4°C) and a low-temperature of 49.5°F (9.7°C). July's heat index is evaluated at 80.6°F (27°C). Weather in July »Weather in August
August, the last month of the summer in Chester, is another warm month, with an average temperature fluctuating between 80.2°F (26.8°C) and 48°F (8.9°C). August's advent notes a subtle adjustment in average high-temperature to a still warm 80.2°F (26.8°C) from July. Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Chester, California, with an average temperature fluctuating between 44.6°F (7°C) and 73.4°F (23°C). The average high-temperature slightly decreases in September, shifting from a moderately hot 80.2°F (26.8°C) in August to a still warm 73.4°F (23°C). Weather in September »Weather in October
October, the same as September, in Chester, California, is a moderate autumn month, with an average temperature varying between 36.5°F (2.5°C) and 60.6°F (15.9°C). The start of October comes with a reduction in the average high-temperature, receding from a moderately hot 73.4°F (23°C) in September to a refreshing 60.6°F (15.9°C). Weather in October »Weather in November
November, the last month of the autumn in Chester, is another chilly month, with an average temperature fluctuating between 47.8°F (8.8°C) and 29.1°F (-1.6°C). November involves a decrease in temperature, down from a mild 60.6°F (15.9°C) in October to a frosty 47.8°F (8.8°C). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in Chester, California, with an average temperature ranging between min 24.1°F (-4.4°C) and max 38.3°F (3.5°C). Chester's coldest temperatures are experienced in December, with average high temperatures of 38.3°F (3.5°C) and lows of 24.1°F (-4.4°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Chester, CA
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is December (38.3°F).
The month with the highest average low temperature is July (49.5°F).
The coldest month (with the lowest average low temperature) is December (24.1°F).
Average pressure
Chester, CA
- Average pressure in January:
30.18"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
30.01"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.9"Hg
- Average pressure in July:
29.91"Hg - Average pressure in August:
29.91"Hg - Average pressure in September:
29.93"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.16"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
Chester, CA
- Average wind speed in January:
6.1mph - Average wind speed in February:
6.4mph - Average wind speed in March:
6.7mph - Average wind speed in April:
6.5mph - Average wind speed in May:
6mph - Average wind speed in June:
5.7mph
- Average wind speed in July:
5mph - Average wind speed in August:
4.8mph - Average wind speed in September:
5.2mph - Average wind speed in October:
5.7mph - Average wind speed in November:
5.7mph - Average wind speed in December:
6mph
The windiest month (with the highest average wind speed) is March (6.7mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity
Chester, CA
The month with the highest relative humidity is March (83%).
The month with the lowest relative humidity is July (42%).
Average rainfall
Chester, CA
- Average rainfall in January:
4.88" - Average rainfall in February:
5.08" - Average rainfall in March:
5.59" - Average rainfall in April:
2.8" - Average rainfall in May:
2.56" - Average rainfall in June:
0.94"
- Average rainfall in July:
0.39" - Average rainfall in August:
0.43" - Average rainfall in September:
0.67" - Average rainfall in October:
1.57" - Average rainfall in November:
2.87" - Average rainfall in December:
5.2"
The wettest month (with the highest rainfall) is March (5.59").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days
Chester, CA
- Average rainfall days in January:
7.9 days - Average rainfall days in February:
7 days - Average rainfall days in March:
12.2 days - Average rainfall days in April:
13 days - Average rainfall days in May:
13.4 days - Average rainfall days in June:
6.7 days
- Average rainfall days in July:
4.3 days - Average rainfall days in August:
4 days - Average rainfall days in September:
5.5 days - Average rainfall days in October:
7.6 days - Average rainfall days in November:
7.6 days - Average rainfall days in December:
8.9 days
The month with the highest number of rainy days is May (13.4 days).
The month with the least rainy days is August (4 days).
Average snowfall
Chester, CA
- Average snowfall in January:
24.13" - Average snowfall in February:
26.81" - Average snowfall in March:
27.05" - Average snowfall in April:
9.61" - Average snowfall in May:
2.87" - Average snowfall in June:
0.55"
The month with the highest snowfall is March (27.05").
The months with the least snowfall are July and August (0").
Average snowfall days
Chester, CA
- Average snowfall days in January:
10.9 days - Average snowfall days in February:
10.9 days - Average snowfall days in March:
14 days - Average snowfall days in April:
7.3 days - Average snowfall days in May:
2.3 days - Average snowfall days in June:
0.5 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.2 days - Average snowfall days in October:
1.4 days - Average snowfall days in November:
6.3 days - Average snowfall days in December:
12.2 days
The month with the highest number of snowfall days is March (14 days).
The months with the least snowfall days are July and August (0 days).
Average daylight / Average sunshine
Chester, CA
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
5h and 6min - Average sunshine in February:
5h and 36min - Average sunshine in March:
6h and 42min - Average sunshine in April:
9h and 30min - Average sunshine in May:
10h and 42min - Average sunshine in June:
11h and 42min
- Average sunshine in July:
12h and 6min - Average sunshine in August:
11h and 48min - Average sunshine in September:
11h and 6min - Average sunshine in October:
7h and 6min - Average sunshine in November:
6h and 12min - Average sunshine in December:
5h and 12min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days
Chester, CA
- Average sunshine days in January:
15.3 days - Average sunshine days in February:
14 days - Average sunshine days in March:
10.9 days - Average sunshine days in April:
11.7 days - Average sunshine days in May:
13.8 days - Average sunshine days in June:
21.2 days
- Average sunshine days in July:
24.2 days - Average sunshine days in August:
25 days - Average sunshine days in September:
23.1 days - Average sunshine days in October:
21.4 days - Average sunshine days in November:
17.8 days - Average sunshine days in December:
14.6 days
The month with the most sunshine days is August (25 days).
The month with the least sunshine days is March (10.9 days).
Average UV index
Chester, CA
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are February and November (UV index 1).
Average cloud cover
Chester, CA
The month with the most cloud cover is March (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 7).
Average visibility
Chester, CA
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).





