Climate and monthly weather forecastWinchester, CA
Climate and monthly weather forecast
Weather in January
January, the same as December, is another enjoyable winter month in Winchester, California, with an average temperature fluctuating between 63.5°F (17.5°C) and 44.2°F (6.8°C). January commences with an average high-temperature of a still comfortable 63.5°F (17.5°C), showing little deviation from December's 61°F (16.1°C). Weather in January »Weather in February
The last month of the winter, February, is another comfortable month in Winchester, California, with an average temperature varying between 43.2°F (6.2°C) and 63°F (17.2°C). February's average high-temperature is a still enjoyable 63°F (17.2°C), maintaining a close comparison with January's 63.5°F (17.5°C). Weather in February »Weather in March
The first month of the spring, March, is also an enjoyable month in Winchester, California, with temperature in the range of an average high of 66.7°F (19.3°C) and an average low of 45.1°F (7.3°C). Winchester's shift into March sets the average high-temperature at a still refreshing 66.7°F (19.3°C), a figure that deviates only slightly from February's 63°F (17.2°C). Weather in March »Weather in April
April in Winchester, California, is an agreeable spring month, with temperature in the range of an average high of 70.7°F (21.5°C) and an average low of 47.8°F (8.8°C). Winchester, California, experiences a subtle adjustment in high-temperatures to an agreeable 70.7°F (21.5°C) with the onset of April, maintaining near parity with March's 66.7°F (19.3°C). Weather in April »Weather in May
The last month of the spring, May, is a moderately hot month in Winchester, California, with an average temperature ranging between max 74.3°F (23.5°C) and min 51.3°F (10.7°C). Winchester, California, commences May with an average high-temperature of a warm 74.3°F (23.5°C), maintaining a close resemblance to the previous month. Weather in May »Weather in June
June, the first month of the summer in Winchester, is still a warm month, with temperature in the range of an average low of 55.4°F (13°C) and an average high of 82.9°F (28.3°C). Winchester's weather in June presents a minor rise in the average high-temperature, moving from a moderately hot 74.3°F (23.5°C) in May to a still warm 82.9°F (28.3°C). Weather in June »Weather in July
July is a tropical summer month in Winchester, California, with an average temperature varying between 88.2°F (31.2°C) and 61.9°F (16.6°C). Winchester starts July with an average high-temperature of a tropical 88.2°F (31.2°C), a minor shift from June's 82.9°F (28.3°C). Weather in July »Weather in August
The last month of the summer, August, is another tropical month in Winchester, California, with an average temperature varying between 63.3°F (17.4°C) and 89.6°F (32°C). August stands out as Winchester's warmest month, with an average high-temperature of 89.6°F (32°C) and a low-temperature of 63.3°F (17.4°C). The heat index for August is estimated at a hot 93.2°F (34°C). Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Winchester, California, with temperature in the range of an average low of 61.3°F (16.3°C) and an average high of 85.8°F (29.9°C). September begins with an average high-temperature of a moderately hot 85.8°F (29.9°C), reflecting close similarity to the preceding month. Weather in September »Weather in October
October, like September, in Winchester, California, is another warm autumn month, with temperature in the range of an average high of 77.9°F (25.5°C) and an average low of 54.5°F (12.5°C). Winchester's October weather features a light decline in high-temperatures, reducing from a warm 85.8°F (29.9°C) in September to a still moderately hot 77.9°F (25.5°C). Weather in October »Weather in November
November, the last month of the autumn in Winchester, is another pleasant month, with an average temperature fluctuating between 48.4°F (9.1°C) and 69.1°F (20.6°C). Winchester observes a small decrease in the average high-temperature with the arrival of November, falling from October's warm 77.9°F (25.5°C) to an agreeable 69.1°F (20.6°C). Weather in November »Weather in December
December, the first month of the winter in Winchester, is also an enjoyable month, with an average temperature varying between 61°F (16.1°C) and 43°F (6.1°C). During the coldest month, December, temperatures average a high of 61°F (16.1°C) and a low of 43°F (6.1°C). Weather in December »Updated: Aug 1, 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
Throughout the year, there are 55.7 rainfall days, and 7.05" (179mm) of precipitation is accumulated.
In Winchester, snow does not fall in January, March through December.
In Winchester, during the entire year, snow aggregates up to 0.04" (1mm).
February is the only month when snow falls.
February is the month with the most snowfall. Snow falls for 0.2 days and accumulates 0.04" (1mm) of snow.
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.
With an average relative humidity of 60%, May is the most humid month in Winchester.
The month with the least rainfall is June, when the rain falls for 1.3 days and typically collects 0.04" (1mm) of precipitation.
With an average of 14h and 24min of daylight, June has the longest days of the year.
The month with the most sunshine is July, with an average of 12.1h of sunshine.
With an average maximum UV index of 7, July is the month with the highest UV index.
Temperature records in Winchester, California, mark August as the warmest month, with highs averaging 89.6°F (32°C) and lows at 63.3°F (17.4°C).
The least humid month is August, with an average relative humidity of 47%.
With its average high temperature of 61°F (16.1°C) and a low of 43°F (6.1°C), December is regarded as the coldest month.
December is the month with the most rainfall. Rain falls for 6.5 days and accumulates 1.38" (35mm) of precipitation.
With an average of 10h and 0min of daylight, December has the shortest days of the year.
With an average of 6.7h of sunshine, December has the least sunshine of the year.
With an average maximum UV index of 3, December is the month with the lowest UV index.
Average temperature
Winchester, CA
The warmest month (with the highest average high temperature) is August (89.6°F).
The month with the lowest average high temperature is December (61°F).
The month with the highest average low temperature is August (63.3°F).
The coldest month (with the lowest average low temperature) is December (43°F).
Average pressure
Winchester, 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:
29.9"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
Winchester, CA
- Average wind speed in January:
5mph - Average wind speed in February:
4.8mph - Average wind speed in March:
5mph - Average wind speed in April:
5.5mph - Average wind speed in May:
5.3mph - Average wind speed in June:
4.8mph
- Average wind speed in July:
4.5mph - Average wind speed in August:
4.2mph - Average wind speed in September:
4.2mph - Average wind speed in October:
4.3mph - Average wind speed in November:
4.7mph - Average wind speed in December:
4.8mph
The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest months (with the lowest average wind speed) are August and September (4.2mph).
Average humidity
Winchester, CA
The month with the highest relative humidity is May (60%).
The month with the lowest relative humidity is August (47%).
Average rainfall
Winchester, CA
- Average rainfall in January:
0.79" - Average rainfall in February:
1.34" - Average rainfall in March:
0.75" - Average rainfall in April:
0.55" - Average rainfall in May:
0.35" - Average rainfall in June:
0.04"
- Average rainfall in July:
0.43" - Average rainfall in August:
0.31" - Average rainfall in September:
0.2" - Average rainfall in October:
0.24" - Average rainfall in November:
0.67" - Average rainfall in December:
1.38"
The wettest month (with the highest rainfall) is December (1.38").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days
Winchester, CA
- Average rainfall days in January:
5.6 days - Average rainfall days in February:
5.6 days - Average rainfall days in March:
7.2 days - Average rainfall days in April:
5.8 days - Average rainfall days in May:
4.6 days - Average rainfall days in June:
1.3 days
- Average rainfall days in July:
5 days - Average rainfall days in August:
3.8 days - Average rainfall days in September:
3.5 days - Average rainfall days in October:
3.3 days - Average rainfall days in November:
3.5 days - Average rainfall days in December:
6.5 days
The month with the highest number of rainy days is March (7.2 days).
The month with the least rainy days is June (1.3 days).
Average snowfall
Winchester, CA
The month with the highest snowfall is February (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days
Winchester, CA
- Average snowfall days in January:
0 days - Average snowfall days in February:
0.2 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 (0.2 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
Winchester, CA
- Average daylight in January:
10h and 12min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 54min - Average daylight in June:
14h and 24min
- Average daylight in July:
14h and 6min - Average daylight in August:
13h and 24min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 24min - Average daylight in December:
10h and 0min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January:
6h and 48min - Average sunshine in February:
6h and 48min - Average sunshine in March:
8h and 36min - Average sunshine in April:
10h and 54min - Average sunshine in May:
11h and 24min - Average sunshine in June:
12h and 0min
- Average sunshine in July:
12h and 6min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 36min - Average sunshine in October:
8h and 48min - Average sunshine in November:
7h and 12min - Average sunshine in December:
6h and 42min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days
Winchester, CA
- Average sunshine days in January:
24.1 days - Average sunshine days in February:
21.6 days - Average sunshine days in March:
23.3 days - Average sunshine days in April:
22.8 days - Average sunshine days in May:
23.2 days - Average sunshine days in June:
26.9 days
- Average sunshine days in July:
21.9 days - Average sunshine days in August:
24.5 days - Average sunshine days in September:
23.4 days - Average sunshine days in October:
26.1 days - Average sunshine days in November:
25.1 days - Average sunshine days in December:
23.5 days
The month with the most sunshine days is June (26.9 days).
The month with the least sunshine days is February (21.6 days).
Average UV index
Winchester, CA
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover
Winchester, CA
The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility
Winchester, 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).
