Expand
Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, is another mild winter month in South Santa Rosa, California, with an average temperature ranging between min 43.2°F (6.2°C) and max 57°F (13.9°C). The introduction of January sees an average high-temperature of a still mild 57°F (13.9°C), hardly deviating from December. Weather in January »
Weather in February
The last month of the winter, February, is another mild month in South Santa Rosa, California, with an average temperature ranging between max 58.6°F (14.8°C) and min 42.6°F (5.9°C). The commencement of February brings an average high-temperature of a still moderate 58.6°F (14.8°C), marking an inconsequential divergence from January. Weather in February »
Weather in March
The first month of the spring, March, is still a refreshing month in South Santa Rosa, California, with an average temperature varying between 44.1°F (6.7°C) and 60.4°F (15.8°C). As March unfolds, the average high-temperature reaches a still refreshing 60.4°F (15.8°C), hinting at a slight fluctuation from the previous month. Weather in March »
Weather in April
April is an enjoyable spring month in South Santa Rosa, California, with an average temperature varying between 64.9°F (18.3°C) and 45.5°F (7.5°C). The onset of April brings an average high-temperature of a still refreshing 64.9°F (18.3°C), nearly matching the March temperature. Weather in April »
Weather in May
May, the last month of the spring in South Santa Rosa, is a pleasant month, with an average temperature fluctuating between 48.6°F (9.2°C) and 69.3°F (20.7°C). With the onset of May, the average high-temperature registers at a pleasant 69.3°F (20.7°C), subtly different from April's 64.9°F (18.3°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in South Santa Rosa, California, with temperature in the range of an average high of 76.5°F (24.7°C) and an average low of 52.9°F (11.6°C). With the onset of June, South Santa Rosa experiences a subtle temperature shift, with the average high-temperature moving from an agreeable 69.3°F (20.7°C) in May to a moderately hot 76.5°F (24.7°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in South Santa Rosa, California, with an average temperature varying between 79.9°F (26.6°C) and 54.5°F (12.5°C). The highest point of temperatures falls in July and August, when the average high-temperature ascends to 79.9°F (26.6°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in South Santa Rosa, California, with an average temperature varying between 79.9°F (26.6°C) and 55°F (12.8°C). In South Santa Rosa, the months of July and August are known for the peak temperatures, reaching an average high of 79.9°F (26.6°C). Weather in August »
Weather in September
September, the first month of the autumn in South Santa Rosa, is also a moderately hot month, with an average temperature ranging between max 79.3°F (26.3°C) and min 55°F (12.8°C). The commencement of September records an average high-temperature of a still warm 79.3°F (26.3°C), barely varying from August's 79.9°F (26.6°C). Weather in September »
Weather in October
October, the same as September, in South Santa Rosa, California, is an agreeable autumn month, with an average temperature ranging between min 51.8°F (11°C) and max 72.3°F (22.4°C). The arrival of October signals a subtle shift in temperature, down from a warm 79.3°F (26.3°C) in September to a pleasant 72.3°F (22.4°C). Weather in October »
Weather in November
The last month of the autumn, November, is another refreshing month in South Santa Rosa, California, with an average temperature varying between 63.5°F (17.5°C) and 46°F (7.8°C). Start of November brings a slight shift in the average high-temperature, dipping a bit from October's agreeable 72.3°F (22.4°C) to an enjoyable 63.5°F (17.5°C). Weather in November »
Weather in December
December, the first month of the winter in South Santa Rosa, is still a refreshing month, with an average temperature ranging between min 42.4°F (5.8°C) and max 55.6°F (13.1°C). South Santa Rosa experiences its lowest average temperatures in December, reaching a peak of 55.6°F (13.1°C) and a minimum of 42.4°F (5.8°C). Weather in December »
Updated: Jun 22, 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
How much does it rain in South Santa Rosa?
Throughout the year, there are 44.3 rainfall days, and 3.78" (96mm) of precipitation is accumulated.
When is the lowest UV index?
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index.
What is the wettest month in South Santa Rosa?
The month with the most rainfall is February, when the rain falls for 5.3 days and typically aggregates up to 0.91" (23mm) of precipitation.
What is the most humid month?
March is the most humid month, with an average relative humidity of 77%.
When is Daylight Saving Time (DST) in South Santa Rosa?
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.
What is the driest month?
June through September are months with the least rain when the rain falls for 0.8 days and typically aggregates up to 0.04" (1mm) of rain.
When are the longest days?
The month with the longest days is June, with an average of 14h and 48min of daylight.
What is the month with the highest UV index?
With an average maximum UV index of 6, June is the month with the highest UV index in South Santa Rosa.
What is the warmest month in South Santa Rosa?
South Santa Rosa's peak temperatures tend to occur in July and August, with an average high-temperature of 79.9°F (26.6°C).
What month has the most sunshine?
July has the most sunshine of the year, with an average of 11.9h of sunshine.
What is the least humid month?
The least humid month is September, with an average relative humidity of 62%.
What time of the year is the coldest?
South Santa Rosa notes the coldest temperatures in December, with a average high of 55.6°F (13.1°C) and a low of 42.4°F (5.8°C).
What is the month with the shortest days?
With an average of 9h and 30min of daylight, December has the shortest days of the year.
What is the month with the least sunshine in South Santa Rosa?
With an average of 5.7h of sunshine, December has the least sunshine of the year.
Average temperature
South Santa Rosa, CA
The warmest months (with the highest average high temperature) are July and August (79.9°F).
The month with the lowest average high temperature is December (55.6°F).
The months with the highest average low temperature are August and September (55°F).
The coldest month (with the lowest average low temperature) is December (42.4°F).
Average pressure
South Santa Rosa, CA
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30.07"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:
29.98"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
South Santa Rosa, CA
- Average wind speed in January:
5.1mph - Average wind speed in February:
5.8mph - Average wind speed in March:
6.2mph - Average wind speed in April:
6.7mph - Average wind speed in May:
6.8mph - Average wind speed in June:
6.4mph
- Average wind speed in July:
5.4mph - Average wind speed in August:
5.1mph - Average wind speed in September:
5mph - Average wind speed in October:
4.9mph - Average wind speed in November:
4.7mph - Average wind speed in December:
5.2mph
The windiest month (with the highest average wind speed) is May (6.8mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).
Average humidity
South Santa Rosa, CA
The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is September (62%).
Average rainfall
South Santa Rosa, CA
- Average rainfall in January:
0.51" - Average rainfall in February:
0.91" - Average rainfall in March:
0.55" - Average rainfall in April:
0.16" - Average rainfall in May:
0.24" - Average rainfall in June:
0.04"
- Average rainfall in July:
0.04" - Average rainfall in August:
0.04" - Average rainfall in September:
0.04" - Average rainfall in October:
0.16" - Average rainfall in November:
0.43" - Average rainfall in December:
0.67"
The wettest month (with the highest rainfall) is February (0.91").
The driest months (with the least rainfall) are June, July, August and September (0.04").
Average rainfall days
South Santa Rosa, CA
- Average rainfall days in January:
5.6 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
8.7 days - Average rainfall days in April:
4.8 days - Average rainfall days in May:
2.9 days - Average rainfall days in June:
0.8 days
- Average rainfall days in July:
1 days - Average rainfall days in August:
0.5 days - Average rainfall days in September:
1.7 days - Average rainfall days in October:
2.5 days - Average rainfall days in November:
4.1 days - Average rainfall days in December:
6.4 days
The month with the highest number of rainy days is March (8.7 days).
The month with the least rainy days is August (0.5 days).
Average daylight / Average sunshine
South Santa Rosa, CA
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 2min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 3min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 3min
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 30min).
- Average sunshine in January:
5h and 5min - Average sunshine in February:
6h and 1min - Average sunshine in March:
7h and 3min - Average sunshine in April:
10h and 1min - Average sunshine in May:
10h and 4min - Average sunshine in June:
11h and 4min
- Average sunshine in July:
11h and 5min - Average sunshine in August:
11h and 5min - Average sunshine in September:
11h and 0min - Average sunshine in October:
7h and 0min - Average sunshine in November:
6h and 3min - Average sunshine in December:
5h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days
South Santa Rosa, CA
- Average sunshine days in January:
23.8 days - Average sunshine days in February:
21.2 days - Average sunshine days in March:
20.8 days - Average sunshine days in April:
24 days - Average sunshine days in May:
26.6 days - Average sunshine days in June:
27.7 days
- Average sunshine days in July:
27.6 days - Average sunshine days in August:
27.1 days - Average sunshine days in September:
27.5 days - Average sunshine days in October:
26.8 days - Average sunshine days in November:
23.8 days - Average sunshine days in December:
22.5 days
The month with the most sunshine days is June (27.7 days).
The month with the least sunshine days is March (20.8 days).
Average UV index
South Santa Rosa, CA
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover
South Santa Rosa, CA
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility
South Santa Rosa, 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).
South Santa Rosa, California, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location