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, the same as December, in San Rafael, California, is another refreshing winter month, with an average temperature varying between 45.5°F (7.5°C) and 56.1°F (13.4°C). January's average high-temperature stands at a still moderate 56.1°F (13.4°C), showing little deviation from December's 55.4°F (13°C). Weather in January »
Weather in February
The last month of the winter, February, is another mild month in San Rafael, California, with temperature in the range of an average high of 57.9°F (14.4°C) and an average low of 45.9°F (7.7°C). San Rafael, California, in February witnesses an average high-temperature of a still moderate 57.9°F (14.4°C), indicating a slight variation from January's 56.1°F (13.4°C). Weather in February »
Weather in March
The first month of the spring, March, is still a mild month in San Rafael, California, with an average temperature fluctuating between 46.9°F (8.3°C) and 59.4°F (15.2°C). Stepping into March, San Rafael records an average high-temperature of a still refreshing 59.4°F (15.2°C), almost consistent with February. Weather in March »
Weather in April
April is a refreshing spring month in San Rafael, California, with an average temperature fluctuating between 62.8°F (17.1°C) and 48.6°F (9.2°C). San Rafael's shift into April is marked by a subtle change to an enjoyable 62.8°F (17.1°C) from March's 59.4°F (15.2°C) in temperature. Weather in April »
Weather in May
May, the last month of the spring in San Rafael, is also an enjoyable month, with an average temperature varying between 50.4°F (10.2°C) and 64.9°F (18.3°C). The advent of May brings an average high-temperature of a still enjoyable 64.9°F (18.3°C), almost identical to the preceding month. Weather in May »
Weather in June
June, the first month of the summer in San Rafael, is an agreeable month, with temperature in the range of an average high of 69.1°F (20.6°C) and an average low of 53.2°F (11.8°C). The start of June marks an average high-temperature of a pleasant 69.1°F (20.6°C), hardly distinguishable from the conditions in May. Weather in June »
Weather in July
July, the same as June, in San Rafael, California, is another pleasant summer month, with an average temperature varying between 54.3°F (12.4°C) and 70.5°F (21.4°C). Upon the onset of July, San Rafael witnesses an average high-temperature of a still pleasant 70.5°F (21.4°C), showing a close resemblance to the prior month. Weather in July »
Weather in August
The last month of the summer, August, is another pleasant month in San Rafael, California, with an average temperature varying between 55.4°F (13°C) and 71.2°F (21.8°C). San Rafael registers an average high-temperature of a still agreeable 71.2°F (21.8°C) at the commencement of August, closely related to the preceding month. Weather in August »
Weather in September
September, the first month of the autumn in San Rafael, is still a pleasant month, with an average temperature ranging between min 56.1°F (13.4°C) and max 72.3°F (22.4°C). San Rafael's September weather reaches an average high of 72.3°F (22.4°C) and an average low of 56.1°F (13.4°C), making it the warmest month. Weather in September »
Weather in October
October, like September, is an agreeable autumn month in San Rafael, California, with an average temperature ranging between min 54.3°F (12.4°C) and max 68.9°F (20.5°C). San Rafael records a slight change with October's average high-temperatures adjusting to a still pleasant 68.9°F (20.5°C) from September's 72.3°F (22.4°C). Weather in October »
Weather in November
The last month of the autumn, November, is also an enjoyable month in San Rafael, California, with an average temperature ranging between max 61.5°F (16.4°C) and min 49.6°F (9.8°C). In November, the average high-temperature marginally decreases from an agreeable 68.9°F (20.5°C) in October to a refreshing 61.5°F (16.4°C). Weather in November »
Weather in December
December, the first month of the winter in San Rafael, is still a refreshing month, with an average temperature fluctuating between 55.4°F (13°C) and 45.3°F (7.4°C). December is the month when San Rafael sees the lowest average temperatures, with a high of 55.4°F (13°C) and a low of 45.3°F (7.4°C). Weather in December »
Updated: Jun 17, 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?
Throughout the year, there are 48 rainfall days, and 3.94" (100mm) 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?
The month with the most rainfall is February, when the rain falls for 5.3 days and typically aggregates up to 0.87" (22mm) of precipitation.
What is the most humid month?
The most humid month is March, with an average relative humidity of 77%.
When is Daylight Saving Time (DST)?
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 month with the highest UV index?
The months with the highest UV index are April, June through September, with an average maximum UV index of 5.
What is the driest month?
The months with the least rainfall are June through September Rain falls for 1.2 days and accumulates 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 month has the most sunshine?
July has the most sunshine of the year, with an average of 11.2h of sunshine.
What part of the year is the hottest in San Rafael?
San Rafael experiences its average highest temperatures in September, reaching a peak of 72.3°F (22.4°C) and a minimum of 56.1°F (13.4°C).
What is the least humid month?
With an average relative humidity of 68%, October is the least humid month.
What month is the coldest?
San Rafael notes the coldest temperatures in December, with a average high of 55.4°F (13°C) and a low of 45.3°F (7.4°C).
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 36min of daylight.
What is the month with the least sunshine?
December has the least sunshine of the year, with an average of 5.5h of sunshine.
Average temperature
San Rafael, CA
The warmest month (with the highest average high temperature) is September (72.3°F).
The month with the lowest average high temperature is December (55.4°F).
The month with the highest average low temperature is September (56.1°F).
The coldest month (with the lowest average low temperature) is December (45.3°F).
Average pressure
San Rafael, CA
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.08"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:
30.1"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
San Rafael, CA
- Average wind speed in January:
6mph - Average wind speed in February:
6.8mph - Average wind speed in March:
7.3mph - Average wind speed in April:
7.6mph - Average wind speed in May:
7.8mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.4mph - Average wind speed in September:
5.9mph - Average wind speed in October:
5.5mph - Average wind speed in November:
5.5mph - Average wind speed in December:
6.2mph
The windiest month (with the highest average wind speed) is May (7.8mph).
The calmest months (with the lowest average wind speed) are October and November (5.5mph).
Average humidity
San Rafael, CA
The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is October (68%).
Average rainfall
San Rafael, CA
- Average rainfall in January:
0.59" - Average rainfall in February:
0.87" - Average rainfall in March:
0.59" - Average rainfall in April:
0.2" - Average rainfall in May:
0.28" - 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:
0.12" - Average rainfall in November:
0.47" - Average rainfall in December:
0.67"
The wettest month (with the highest rainfall) is February (0.87").
The driest months (with the least rainfall) are June, July, August and September (0.04").
Average rainfall days
San Rafael, CA
- Average rainfall days in January:
5.9 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
8.8 days - Average rainfall days in April:
5.5 days - Average rainfall days in May:
3.3 days - Average rainfall days in June:
1.2 days
- Average rainfall days in July:
1.4 days - Average rainfall days in August:
1.2 days - Average rainfall days in September:
1.7 days - Average rainfall days in October:
2.6 days - Average rainfall days in November:
3.9 days - Average rainfall days in December:
7.2 days
The month with the highest number of rainy days is March (8.8 days).
The months with the least rainy days are June and August (1.2 days).
Average daylight / Average sunshine
San Rafael, 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 1min - 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 4min
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:
5h and 4min - Average sunshine in February:
6h and 1min - Average sunshine in March:
7h and 3min - Average sunshine in April:
10h and 0min - Average sunshine in May:
10h and 0min - Average sunshine in June:
11h and 1min
- Average sunshine in July:
11h and 1min - Average sunshine in August:
10h and 5min - Average sunshine in September:
10h and 2min - Average sunshine in October:
6h and 5min - Average sunshine in November:
6h and 2min - Average sunshine in December:
5h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days
San Rafael, CA
- Average sunshine days in January:
24.2 days - Average sunshine days in February:
21.4 days - Average sunshine days in March:
20.7 days - Average sunshine days in April:
23.3 days - Average sunshine days in May:
24.7 days - Average sunshine days in June:
26.4 days
- Average sunshine days in July:
26.3 days - Average sunshine days in August:
24.8 days - Average sunshine days in September:
26 days - Average sunshine days in October:
26.2 days - Average sunshine days in November:
24 days - Average sunshine days in December:
22.1 days
The month with the most sunshine days is June (26.4 days).
The month with the least sunshine days is March (20.7 days).
Average UV index
San Rafael, CA
The months with the highest UV index are April, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover
San Rafael, CA
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is September (Cloud cover 19).
Average visibility
San Rafael, 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).
San Rafael, 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