Climate and monthly weather forecastBoonville, CA
Climate and monthly weather forecast
Weather in January
January, like December, in Boonville, California, is another fresh winter month, with an average temperature fluctuating between 55.2°F (12.9°C) and 38.8°F (3.8°C). The onset of January manifests an average high-temperature of a still cool 55.2°F (12.9°C), demonstrating a minor variation from the preceding month. Weather in January »Weather in February
February, the last month of the winter in Boonville, is a refreshing month, with temperature in the range of an average low of 37.9°F (3.3°C) and an average high of 56.3°F (13.5°C). The average high-temperature during February registers at a moderate 56.3°F (13.5°C), closely corresponding to the preceding month. Weather in February »Weather in March
March, the first month of the spring in Boonville, is still a mild month, with an average temperature ranging between min 38.7°F (3.7°C) and max 57.6°F (14.2°C). The unfolding of March shows an average high-temperature of a still refreshing 57.6°F (14.2°C), indicating a slight variance from February's 56.3°F (13.5°C). Weather in March »Weather in April
April in Boonville, California, is an enjoyable spring month, with temperature in the range of an average low of 41°F (5°C) and an average high of 63.1°F (17.3°C). The start of April brings a subtle shift in the average high-temperature, edging up from March's mild 57.6°F (14.2°C) to a still refreshing 63.1°F (17.3°C). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Boonville, California, with an average temperature ranging between min 45.1°F (7.3°C) and max 69.1°F (20.6°C). The arrival of May witnesses a small shift in the average high-temperature, moving from a refreshing 63.1°F (17.3°C) in April to an agreeable 69.1°F (20.6°C). Weather in May »Weather in June
June, the first month of the summer in Boonville, is a warm month, with an average temperature varying between 50.5°F (10.3°C) and 78.1°F (25.6°C). As Boonville enters June, the average high-temperature increases from the an agreeable 69.1°F (20.6°C) of May to a moderately hot 78.1°F (25.6°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Boonville, California, with temperature in the range of an average high of 85.3°F (29.6°C) and an average low of 53.6°F (12°C). July is the month when Boonville experiences its warmest temperatures, averaging a high of 85.3°F (29.6°C) and a low of 53.6°F (12°C). In July, the heat index is appraised at a hot 89.6°F (32°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Boonville, California, with an average temperature fluctuating between 84.7°F (29.3°C) and 53.4°F (11.9°C). August's commencement is accompanied by an average high-temperature of a still moderately hot 84.7°F (29.3°C), diverging marginally from July's 85.3°F (29.6°C). Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Boonville, California, with an average temperature ranging between max 80.8°F (27.1°C) and min 51.4°F (10.8°C). The introduction of September sees an average high-temperature of a still moderately hot 80.8°F (27.1°C), hardly deviating from August. Weather in September »Weather in October
October, like September, is another pleasant autumn month in Boonville, California, with an average temperature ranging between min 47.1°F (8.4°C) and max 72°F (22.2°C). As September shifts into October, a minor alteration in temperatures is observed, with average highs reducing from a warm 80.8°F (27.1°C) to an agreeable 72°F (22.2°C). Weather in October »Weather in November
The last month of the autumn, November, is another comfortable month in Boonville, California, with temperature in the range of an average low of 40.3°F (4.6°C) and an average high of 61°F (16.1°C). November brings a minor decrease, with the average high-temperature reducing from a pleasant 72°F (22.2°C) in October to an enjoyable 61°F (16.1°C). Weather in November »Weather in December
The first month of the winter, December, is still a cool month in Boonville, California, with an average temperature varying between 37.4°F (3°C) and 53.6°F (12°C). Boonville witnesses the coldest weather in December, with temperatures averaging a high of 53.6°F (12°C) and a low of 37.4°F (3°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Boonville, CA
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is December (53.6°F).
The month with the highest average low temperature is July (53.6°F).
The coldest month (with the lowest average low temperature) is December (37.4°F).
Average pressure
Boonville, CA
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
30.03"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.92"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed
Boonville, CA
- Average wind speed in January:
4.6mph - Average wind speed in February:
5.1mph - Average wind speed in March:
5.3mph - Average wind speed in April:
5.5mph - Average wind speed in May:
5.5mph - Average wind speed in June:
5.5mph
- Average wind speed in July:
4.7mph - Average wind speed in August:
4.3mph - Average wind speed in September:
4.4mph - Average wind speed in October:
4.3mph - Average wind speed in November:
4.2mph - Average wind speed in December:
4.5mph
The windiest months (with the highest average wind speed) are April, May and June (5.5mph).
The calmest month (with the lowest average wind speed) is November (4.2mph).
Average humidity
Boonville, CA
The month with the highest relative humidity is March (79%).
The months with the lowest relative humidity are July and September (58%).
Average rainfall
Boonville, CA
- Average rainfall in January:
2.91" - Average rainfall in February:
3.11" - Average rainfall in March:
2.91" - Average rainfall in April:
1.02" - Average rainfall in May:
1.02" - Average rainfall in June:
0.2"
The wettest months (with the highest rainfall) are February and December (3.11").
The driest months (with the least rainfall) are July and August (0.08").
Average rainfall days
Boonville, CA
- Average rainfall days in January:
11.3 days - Average rainfall days in February:
9.4 days - Average rainfall days in March:
14.3 days - Average rainfall days in April:
8.6 days - Average rainfall days in May:
5.7 days - Average rainfall days in June:
2.9 days
- Average rainfall days in July:
1.8 days - Average rainfall days in August:
1.3 days - Average rainfall days in September:
2.5 days - Average rainfall days in October:
5.2 days - Average rainfall days in November:
7.8 days - Average rainfall days in December:
12.5 days
The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is August (1.3 days).
Average snowfall
Boonville, 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
Boonville, CA
- Average snowfall days in January:
0 days - Average snowfall days in February:
0.3 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 (0.3 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
Boonville, CA
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 18min - Average daylight in June:
14h and 54min
- Average daylight in July:
14h and 36min - 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 30min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
5h and 30min - Average sunshine in February:
5h and 48min - Average sunshine in March:
6h and 54min - Average sunshine in April:
9h and 36min - Average sunshine in May:
10h and 30min - Average sunshine in June:
11h and 30min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
11h and 54min - Average sunshine in September:
10h and 54min - Average sunshine in October:
6h and 48min - Average sunshine in November:
6h and 18min - Average sunshine in December:
5h and 18min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days
Boonville, CA
- Average sunshine days in January:
18.5 days - Average sunshine days in February:
17.1 days - Average sunshine days in March:
15.9 days - Average sunshine days in April:
19.8 days - Average sunshine days in May:
23 days - Average sunshine days in June:
25.8 days
- Average sunshine days in July:
28.5 days - Average sunshine days in August:
28.1 days - Average sunshine days in September:
26.9 days - Average sunshine days in October:
24.5 days - Average sunshine days in November:
21.4 days - Average sunshine days in December:
17.6 days
The month with the most sunshine days is July (28.5 days).
The month with the least sunshine days is March (15.9 days).
Average UV index
Boonville, CA
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are February and November (UV index 2).
Average cloud cover
Boonville, CA
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility
Boonville, CA
The months with the highest visibility are February, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, March and December (5mi).





