Climate and monthly weather forecastJamestown, CA
Climate and monthly weather forecast
Weather in January
January is a refreshing winter month in Jamestown, California, with an average temperature fluctuating between 38.8°F (3.8°C) and 55.4°F (13°C). In Jamestown, January's average high-temperature stands at a mild 55.4°F (13°C), closely related to the preceding month. Weather in January »Weather in February
February, the last month of the winter in Jamestown, is another mild month, with temperature in the range of an average high of 55.9°F (13.3°C) and an average low of 37.9°F (3.3°C). Jamestown observes an average high-temperature of a still moderate 55.9°F (13.3°C) in February, barely different from 55.4°F (13°C) in January. Weather in February »Weather in March
The first month of the spring, March, is still a refreshing month in Jamestown, California, with an average temperature ranging between max 59.4°F (15.2°C) and min 39.7°F (4.3°C). The shift into March finds Jamestown at an average high-temperature of a still moderate 59.4°F (15.2°C), closely comparable to February's conditions. Weather in March »Weather in April
April in Jamestown, California, is a refreshing spring month, with an average temperature varying between 43.3°F (6.3°C) and 65.3°F (18.5°C). April's onset brings a minor rise in the average high-temperature, moving from a refreshing 59.4°F (15.2°C) in March to a comfortable 65.3°F (18.5°C). Weather in April »Weather in May
May, the last month of the spring in Jamestown, is a pleasant month, with temperature in the range of an average high of 73°F (22.8°C) and an average low of 49.1°F (9.5°C). May's arrival signals a modest temperature shift, moving from a comfortable 65.3°F (18.5°C) in April to an agreeable 73°F (22.8°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Jamestown, California, with an average temperature ranging between max 83.8°F (28.8°C) and min 56.8°F (13.8°C). June indicates a change in the average high-temperature, moving up from a pleasant 73°F (22.8°C) in May to a warm 83.8°F (28.8°C). Weather in June »Weather in July
July in Jamestown, California, is a tropical summer month, with an average temperature fluctuating between 62.2°F (16.8°C) and 91.4°F (33°C). July proves to be the warmest month, recording an average peak temperature of 91.4°F (33°C) and a minimum temperature of 62.2°F (16.8°C). Weather in July »Weather in August
August, the last month of the summer in Jamestown, is also a hot month, with an average temperature ranging between max 90.9°F (32.7°C) and min 61.7°F (16.5°C). August's weather records an average high-temperature of a still tropical 90.9°F (32.7°C), showing little deviation from July. Weather in August »Weather in September
September, the first month of the autumn in Jamestown, is still a warm month, with an average temperature varying between 85.1°F (29.5°C) and 58.8°F (14.9°C). In Jamestown, the average high-temperature in September gently drops from a tropical 90.9°F (32.7°C) in August to a warm 85.1°F (29.5°C). Weather in September »Weather in October
October, like September, in Jamestown, California, is a moderately hot autumn month, with an average temperature ranging between min 51.4°F (10.8°C) and max 73.6°F (23.1°C). Jamestown's weather in October involves a decrease in the average high-temperature, moving down from September's warm 85.1°F (29.5°C) to a still moderately hot 73.6°F (23.1°C). Weather in October »Weather in November
November, the last month of the autumn in Jamestown, is also an enjoyable month, with an average temperature fluctuating between 61.7°F (16.5°C) and 43.3°F (6.3°C). With November's arrival, Jamestown sees a decrease in average high-temperatures, moving from a warm 73.6°F (23.1°C) in October to a comfortable 61.7°F (16.5°C). Weather in November »Weather in December
The first month of the winter, December, is also a fresh month in Jamestown, California, with an average temperature ranging between min 37.2°F (2.9°C) and max 52.9°F (11.6°C). December is the coldest month of the year, registering average temperatures as high as 52.9°F (11.6°C) and as low as 37.2°F (2.9°C). Weather in December »Updated: Jun 9, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Throughout the year, there are 76.7 rainfall days, and 23.9" (607mm) of precipitation is accumulated.
January through March, November and December are months with snowfall in Jamestown.
In Jamestown, during the entire year, snow falls for 2.1 days and aggregates up to 4.41" (112mm) of snow.
February is the month with the most snowfall. Snow falls for 1.2 days and accumulates 2.72" (69mm) of snow.
With an average relative humidity of 70%, March is the most humid month.
The month with the most rainfall in Jamestown is March, when the rain falls for 13.4 days and typically aggregates up to 4.76" (121mm) of precipitation.
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.
April through October are months without snowfall.
The month with the longest days in Jamestown is June, with an average of 14h and 48min of daylight.
June and July, with an average maximum UV index of 7, are months with the highest UV index.
With average high temperatures of 91.4°F (33°C) and lows of 62.2°F (16.8°C), July is the warmest month.
The least humid month is July, with an average relative humidity of 32%.
The months with the least rainfall are July and August Rain falls for 1.9 days and accumulates 0.04" (1mm) of rain.
The month with the most sunshine is July, with an average of 12.1h of sunshine.
With an average maximum UV index of 2, November is the month with the lowest UV index.
Jamestown's coldest month, December, registers temperatures that range from a high of 52.9°F (11.6°C) to a low of 37.2°F (2.9°C).
The month with the shortest days is December, with an average of 9h and 36min of daylight.
With an average of 6h of sunshine, December has the least sunshine of the year.
Average temperature
Jamestown, CA
The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is December (52.9°F).
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is December (37.2°F).
Average pressure
Jamestown, CA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
30.01"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.93"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Jamestown, CA
- Average wind speed in January:
4.8mph - Average wind speed in February:
5.7mph - Average wind speed in March:
5.7mph - Average wind speed in April:
5.7mph - Average wind speed in May:
5.5mph - Average wind speed in June:
5.5mph
- Average wind speed in July:
5.3mph - Average wind speed in August:
5mph - Average wind speed in September:
5mph - Average wind speed in October:
5.2mph - Average wind speed in November:
4.7mph - Average wind speed in December:
4.7mph
The windiest months (with the highest average wind speed) are February, March and April (5.7mph).
The calmest months (with the lowest average wind speed) are November and December (4.7mph).
Average humidity
Jamestown, CA
The month with the highest relative humidity is March (70%).
The month with the lowest relative humidity is July (32%).
Average rainfall
Jamestown, CA
- Average rainfall in January:
3.43" - Average rainfall in February:
4.13" - Average rainfall in March:
4.76" - Average rainfall in April:
2.05" - Average rainfall in May:
1.54" - Average rainfall in June:
0.2"
- Average rainfall in July:
0.04" - Average rainfall in August:
0.04" - Average rainfall in September:
0.2" - Average rainfall in October:
1.02" - Average rainfall in November:
2.52" - Average rainfall in December:
3.98"
The wettest month (with the highest rainfall) is March (4.76").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days
Jamestown, CA
- Average rainfall days in January:
8.7 days - Average rainfall days in February:
8.9 days - Average rainfall days in March:
13.4 days - Average rainfall days in April:
9.8 days - Average rainfall days in May:
6.8 days - Average rainfall days in June:
2.2 days
- Average rainfall days in July:
1.9 days - Average rainfall days in August:
1.4 days - Average rainfall days in September:
2.9 days - Average rainfall days in October:
4.1 days - Average rainfall days in November:
7.1 days - Average rainfall days in December:
9.5 days
The month with the highest number of rainy days is March (13.4 days).
The month with the least rainy days is August (1.4 days).
Average snowfall
Jamestown, CA
The month with the highest snowfall is February (2.72").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Jamestown, CA
- Average snowfall days in January:
0.1 days - Average snowfall days in February:
1.2 days - Average snowfall days in March:
0.3 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:
0.3 days - Average snowfall days in December:
0.2 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Jamestown, CA
- Average daylight in January:
9h and 54min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 12min - Average daylight in June:
14h and 48min
- Average daylight in July:
14h and 30min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 36min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
6h and 12min - Average sunshine in February:
6h and 18min - Average sunshine in March:
7h and 54min - Average sunshine in April:
10h and 18min - Average sunshine in May:
11h and 6min - Average sunshine in June:
11h and 54min
- Average sunshine in July:
12h and 6min - Average sunshine in August:
12h and 0min - Average sunshine in September:
11h and 18min - Average sunshine in October:
7h and 30min - Average sunshine in November:
6h and 42min - Average sunshine in December:
6h and 0min
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 0min).
Average sunshine days
Jamestown, CA
- Average sunshine days in January:
21.8 days - Average sunshine days in February:
18.6 days - Average sunshine days in March:
16.8 days - Average sunshine days in April:
19.5 days - Average sunshine days in May:
22.4 days - Average sunshine days in June:
27.1 days
- Average sunshine days in July:
28.4 days - Average sunshine days in August:
28.4 days - Average sunshine days in September:
26.6 days - Average sunshine days in October:
26.3 days - Average sunshine days in November:
22.5 days - Average sunshine days in December:
20.5 days
The months with the most sunshine days are July and August (28.4 days).
The month with the least sunshine days is March (16.8 days).
Average UV index
Jamestown, CA
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is November (UV index 2).
Average cloud cover
Jamestown, CA
The month with the most cloud cover is March (Cloud cover 35).
The months with the least cloud cover are July and August (Cloud cover 5).
Average visibility
Jamestown, 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).
