Climate and monthly weather forecastNicasio, CA
Climate and monthly weather forecast
Weather in January
January in Nicasio, California, is a moderate winter month, with temperature in the range of an average high of 56.3°F (13.5°C) and an average low of 44.2°F (6.8°C). The beginning of January records an average high-temperature of a refreshing 56.3°F (13.5°C), almost echoing the conditions of the previous month. Weather in January »Weather in February
The last month of the winter, February, is another refreshing month in Nicasio, California, with an average temperature varying between 45°F (7.2°C) and 58.6°F (14.8°C). With the onset of February, Nicasio's average high-temperature clocks in at a still moderate 58.6°F (14.8°C), showing a minor fluctuation from the previous month. Weather in February »Weather in March
The first month of the spring, March, is also a moderate month in Nicasio, California, with temperature in the range of an average high of 59.9°F (15.5°C) and an average low of 46°F (7.8°C). March's beginning signals an average high-temperature of a still refreshing 59.9°F (15.5°C), barely different from February's 58.6°F (14.8°C). Weather in March »Weather in April
April in Nicasio, California, is a refreshing spring month, with temperature in the range of an average low of 47.1°F (8.4°C) and an average high of 64°F (17.8°C). Nicasio's weather, upon April's arrival, documents an average high-temperature of an enjoyable 64°F (17.8°C), nearly identical to the prior month. Weather in April »Weather in May
May, the last month of the spring in Nicasio, is another refreshing month, with an average temperature fluctuating between 67.1°F (19.5°C) and 49.5°F (9.7°C). May commences with an average high-temperature of a still enjoyable 67.1°F (19.5°C), showing little deviation from April's 64°F (17.8°C). Weather in May »Weather in June
The first month of the summer, June, is a pleasant month in Nicasio, California, with an average temperature ranging between max 72.5°F (22.5°C) and min 53.1°F (11.7°C). The onset of June marks a slight increase in the average high-temperature, moving from an enjoyable 67.1°F (19.5°C) in May to a pleasant 72.5°F (22.5°C). Weather in June »Weather in July
July is a moderately hot summer month in Nicasio, California, with an average temperature ranging between max 74.7°F (23.7°C) and min 54.1°F (12.3°C). The advent of July brings an average high-temperature of a warm 74.7°F (23.7°C), almost identical to the preceding month. Weather in July »Weather in August
August, the last month of the summer in Nicasio, is another warm month, with an average temperature ranging between max 75°F (23.9°C) and min 55.4°F (13°C). With the advent of August, Nicasio's high-temperatures adjust to a still moderately hot 75°F (23.9°C), closely aligning with the preceding month. Weather in August »Weather in September
September, the first month of the autumn in Nicasio, is also a moderately hot month, with temperature in the range of an average low of 55.8°F (13.2°C) and an average high of 75.4°F (24.1°C). September, characterized by an average high temperature of 75.4°F (24.1°C) and a low temperature of 55.8°F (13.2°C), is generally the warmest month. Weather in September »Weather in October
October, the same as September, in Nicasio, California, is another pleasant autumn month, with an average temperature ranging between max 70.5°F (21.4°C) and min 53.4°F (11.9°C). Stepping into October, Nicasio records an average high-temperature of a pleasant 70.5°F (21.4°C), almost consistent with September. Weather in October »Weather in November
November, the last month of the autumn in Nicasio, is another refreshing month, with an average temperature varying between 48.4°F (9.1°C) and 62.2°F (16.8°C). November is characterized by a mild reduction in the average high-temperature, from an agreeable 70.5°F (21.4°C) in October to a refreshing 62.2°F (16.8°C). Weather in November »Weather in December
December, the first month of the winter in Nicasio, is still a cool month, with an average temperature varying between 55.2°F (12.9°C) and 43.9°F (6.6°C). December, known for its average high temperature of 55.2°F (12.9°C) and an average low temperature of 43.9°F (6.6°C), is the coldest month. Weather in December »Updated: Feb 9, 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
In Nicasio, California, during the entire year, the rain falls for 68.4 days and collects up to 7.28" (185mm) of precipitation.
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index.
The month with the most rainfall is February, when the rain falls for 7.7 days and typically aggregates up to 1.65" (42mm) of precipitation.
The most humid month in Nicasio is March, with an average relative humidity of 77%.
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.
With an average of 14h and 48min of daylight, June has the longest days of the year.
With an average maximum UV index of 6, June is the month with the highest UV index in Nicasio, California.
The months with the least rainfall in Nicasio are July through September Rain falls for 2.5 days and accumulates 0.08" (2mm) of rain.
July has the most sunshine of the year in Nicasio, with an average of 11.8h of sunshine.
September, known for its average high temperature of 75.4°F (24.1°C) and an average low temperature of 55.8°F (13.2°C), is the warmest month.
The least humid month is October, with an average relative humidity of 66%.
Nicasio's coldest weather arrives in December, when temperatures average a high of 55.2°F (12.9°C) and a low of 43.9°F (6.6°C).
December has the shortest days of the year, with an average of 9h and 36min of daylight.
The month with the least sunshine is December, with an average of 5.6h of sunshine.
Average temperature
Nicasio, CA
The warmest month (with the highest average high temperature) is September (75.4°F).
The month with the lowest average high temperature is December (55.2°F).
The month with the highest average low temperature is September (55.8°F).
The coldest month (with the lowest average low temperature) is December (43.9°F).
Average pressure
Nicasio, 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
Nicasio, CA
- Average wind speed in January:
5.5mph - Average wind speed in February:
6.3mph - Average wind speed in March:
6.8mph - Average wind speed in April:
7.1mph - Average wind speed in May:
7.3mph - Average wind speed in June:
6.8mph
- Average wind speed in July:
6mph - Average wind speed in August:
5.8mph - Average wind speed in September:
5.5mph - Average wind speed in October:
5.2mph - Average wind speed in November:
5.1mph - Average wind speed in December:
5.7mph
The windiest month (with the highest average wind speed) is May (7.3mph).
The calmest month (with the lowest average wind speed) is November (5.1mph).
Average humidity
Nicasio, CA
The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is October (66%).
Average rainfall
Nicasio, CA
- Average rainfall in January:
1.22" - Average rainfall in February:
1.65" - Average rainfall in March:
1.02" - Average rainfall in April:
0.35" - Average rainfall in May:
0.39" - Average rainfall in June:
0.12"
- Average rainfall in July:
0.08" - Average rainfall in August:
0.08" - Average rainfall in September:
0.08" - Average rainfall in October:
0.39" - Average rainfall in November:
0.67" - Average rainfall in December:
1.22"
The wettest month (with the highest rainfall) is February (1.65").
The driest months (with the least rainfall) are July, August and September (0.08").
Average rainfall days
Nicasio, CA
- Average rainfall days in January:
8.6 days - Average rainfall days in February:
7.7 days - Average rainfall days in March:
10.5 days - Average rainfall days in April:
6.7 days - Average rainfall days in May:
5.5 days - Average rainfall days in June:
2 days
- Average rainfall days in July:
2.5 days - Average rainfall days in August:
2.5 days - Average rainfall days in September:
3 days - Average rainfall days in October:
4.2 days - Average rainfall days in November:
5.7 days - Average rainfall days in December:
9.5 days
The month with the highest number of rainy days is March (10.5 days).
The month with the least rainy days is June (2 days).
Average daylight / Average sunshine
Nicasio, 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 18min - 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:
5h and 48min - Average sunshine in February:
6h and 6min - Average sunshine in March:
7h and 30min - Average sunshine in April:
10h and 6min - Average sunshine in May:
10h and 30min - Average sunshine in June:
11h and 30min
- Average sunshine in July:
11h and 48min - Average sunshine in August:
11h and 42min - Average sunshine in September:
10h and 54min - Average sunshine in October:
7h and 0min - Average sunshine in November:
6h and 24min - Average sunshine in December:
5h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days
Nicasio, CA
- Average sunshine days in January:
21.2 days - Average sunshine days in February:
19.4 days - Average sunshine days in March:
18.5 days - Average sunshine days in April:
21.7 days - Average sunshine days in May:
21.8 days - Average sunshine days in June:
24.5 days
- Average sunshine days in July:
23.8 days - Average sunshine days in August:
22 days - Average sunshine days in September:
24 days - Average sunshine days in October:
24.9 days - Average sunshine days in November:
23.2 days - Average sunshine days in December:
20.6 days
The month with the most sunshine days is October (24.9 days).
The month with the least sunshine days is March (18.5 days).
Average UV index
Nicasio, 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
Nicasio, CA
The month with the most cloud cover is March (Cloud cover 38).
The months with the least cloud cover are July and September (Cloud cover 14).
Average visibility
Nicasio, 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).
