August weather forecastJamestown, CA
August
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).Temperature
August's weather records an average high-temperature of a still tropical 90.9°F (32.7°C), showing little deviation from July. A stark contrast in day to night temperatures can be seen in August, with an average low-temperature of 61.7°F (16.5°C).Humidity
In Jamestown, the average relative humidity in August is 33%.Rainfall
July and August are months with the least rain in Jamestown when the rain falls for 1.4 days and typically aggregates up to 0.04" (1mm) of rain.Snowfall
April through October are months without snowfall.Daylight
In Jamestown, the average length of the day in August is 13h and 35min.On the first day of the month, sunrise is at 6:05 am and sunset at 8:10 pm. On the last day of August, sunrise is at 6:31 am and sunset at 7:32 pm PDT.
Sunshine
In August, the average sunshine is 12h.UV index
The average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily high UV index of 6 during August translates into the following recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Jamestown, CA
- Average high temperature in August: 90.9°F
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).
- Average low temperature in August: 61.7°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 in August
Jamestown, CA
- Average pressure in August: 29.93"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 in August
Jamestown, CA
- Average wind speed in August: 5mph
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 in August
Jamestown, CA
- Average humidity in August: 33%
The month with the highest relative humidity is March (70%).
The month with the lowest relative humidity is July (32%).
Average rainfall in August
Jamestown, CA
- Average rainfall in August: 0.04"
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 in August
Jamestown, CA
- Average rainfall days in August: 1.4 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 in August
Jamestown, CA
- Average snowfall in August: 0"
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 in August
Jamestown, CA
- Average snowfall days in August: 0 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 in August /
Average sunshine in August
Jamestown, CA
- Average daylight in August: 13h 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 August: 12h 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 in August
Jamestown, CA
- Average sunshine days in August: 28.4 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 in August
Jamestown, CA
- Average UV index in August: 6
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 in August
Jamestown, CA
- Average cloud cover in August: 5
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 in August
Jamestown, CA
- Average visibility in August: 6mi
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).
