Climate and monthly weather forecastGraton, CA
Climate and monthly weather forecast
Weather in January
January, like December, is another refreshing winter month in Graton, California, with an average temperature ranging between min 43.2°F (6.2°C) and max 57.2°F (14°C). In January, Graton experiences a minor shift in meteorological conditions with average high-temperatures marked at a still mild 57.2°F (14°C), closely mirroring the climate in December. Weather in January »Weather in February
February, the last month of the winter in Graton, is also a moderate month, with an average temperature varying between 42.8°F (6°C) and 58.8°F (14.9°C). In February, the average high-temperature registers at a still refreshing 58.8°F (14.9°C), nearly identical to January's 57.2°F (14°C). Weather in February »Weather in March
March, the first month of the spring in Graton, is still a refreshing month, with an average temperature fluctuating between 43.5°F (6.4°C) and 60.4°F (15.8°C). Graton's weather, upon March's arrival, documents an average high-temperature of a still refreshing 60.4°F (15.8°C), nearly identical to the prior month. Weather in March »Weather in April
April is a comfortable spring month in Graton, California, with an average temperature ranging between max 64.9°F (18.3°C) and min 45.5°F (7.5°C). Shifting into April, Graton records an average high-temperature of a still refreshing 64.9°F (18.3°C), presenting minor fluctuations compared to the previous month. Weather in April »Weather in May
May, the last month of the spring in Graton, is an agreeable month, with an average temperature fluctuating between 69.1°F (20.6°C) and 48.6°F (9.2°C). As Graton steps into May, the average high-temperature is measured at a pleasant 69.1°F (20.6°C), displaying minor differences from April's 64.9°F (18.3°C). Weather in May »Weather in June
June, the first month of the summer in Graton, is a moderately hot month, with an average temperature ranging between min 53.1°F (11.7°C) and max 76.3°F (24.6°C). With the onset of June, Graton experiences a subtle temperature shift, with the average high-temperature moving from a pleasant 69.1°F (20.6°C) in May to a moderately hot 76.3°F (24.6°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Graton, California, with an average temperature ranging between max 79.3°F (26.3°C) and min 54.1°F (12.3°C). July's onset records an average high-temperature of a still moderately hot 79.3°F (26.3°C), a near match to June's 76.3°F (24.6°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Graton, California, with an average temperature varying between 79.7°F (26.5°C) and 54.7°F (12.6°C). With its high average temperature of 79.7°F (26.5°C) and a low of 54.7°F (12.6°C), August is regarded as the warmest month. Weather in August »Weather in September
September, the first month of the autumn in Graton, is also a moderately hot month, with temperature in the range of an average high of 79°F (26.1°C) and an average low of 54.7°F (12.6°C). September's weather records an average high-temperature of a still moderately hot 79°F (26.1°C), showing little deviation from August. Weather in September »Weather in October
October, like September, is an agreeable autumn month in Graton, California, with an average temperature fluctuating between 51.8°F (11°C) and 72.3°F (22.4°C). The shift from September to October includes a minor decrease in the average high-temperature, lightly dropping from a moderately hot 79°F (26.1°C) to an agreeable 72.3°F (22.4°C). Weather in October »Weather in November
The last month of the autumn, November, is another comfortable month in Graton, California, with an average temperature varying between 46°F (7.8°C) and 63.1°F (17.3°C). The decrease of average high-temperatures is mild in November, with a decline from a pleasant 72.3°F (22.4°C) in October to an enjoyable 63.1°F (17.3°C). Weather in November »Weather in December
December, the first month of the winter in Graton, is still a mild month, with an average temperature ranging between max 55.6°F (13.1°C) and min 41.9°F (5.5°C). Graton reaches its lowest average temperatures in December, measuring 55.6°F (13.1°C) at the peak and 41.9°F (5.5°C) at the lowest. Weather in December »Updated: Aug 11, 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 Graton, during the entire year, the rain falls for 72.8 days and collects up to 12.01" (305mm) of precipitation.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3.
February is the month with the most rainfall. Rain falls for 9.1 days and accumulates 2.64" (67mm) of precipitation.
The most humid month 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.
June has the longest days of the year, with an average of 14h and 48min of daylight.
The month with the highest UV index is June, with an average maximum UV index of 6.
July and August are months with the least rain when the rain falls for 1.5 days and typically aggregates up to 0.04" (1mm) of rain.
July has the most sunshine of the year, with an average of 11.9h of sunshine.
August brings the highest temperatures, with an average high of 79.7°F (26.5°C) and an average low of 54.7°F (12.6°C).
With an average relative humidity of 63%, September is the least humid month.
December, known for its average high temperature of 55.6°F (13.1°C) and an average low temperature of 41.9°F (5.5°C), is the coldest month.
The month with the shortest days is December, with an average of 9h and 30min of daylight.
The month with the least sunshine is December, with an average of 5.7h of sunshine.
Average temperature
Graton, CA
The warmest month (with the highest average high temperature) is August (79.7°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 (54.7°F).
The coldest month (with the lowest average low temperature) is December (41.9°F).
Average pressure
Graton, 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:
30.1"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
Graton, CA
- Average wind speed in January:
5.2mph - Average wind speed in February:
6mph - Average wind speed in March:
6.5mph - Average wind speed in April:
7mph - Average wind speed in May:
7.1mph - Average wind speed in June:
6.8mph
- Average wind speed in July:
5.5mph - Average wind speed in August:
5.2mph - Average wind speed in September:
5.2mph - Average wind speed in October:
5.1mph - Average wind speed in November:
4.9mph - Average wind speed in December:
5.2mph
The windiest month (with the highest average wind speed) is May (7.1mph).
The calmest month (with the lowest average wind speed) is November (4.9mph).
Average humidity
Graton, CA
The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is September (63%).
Average rainfall
Graton, CA
- Average rainfall in January:
2.01" - Average rainfall in February:
2.64" - Average rainfall in March:
2.01" - Average rainfall in April:
0.55" - Average rainfall in May:
0.55" - Average rainfall in June:
0.12"
- Average rainfall in July:
0.04" - Average rainfall in August:
0.04" - Average rainfall in September:
0.12" - Average rainfall in October:
0.67" - Average rainfall in November:
1.02" - Average rainfall in December:
2.24"
The wettest month (with the highest rainfall) is February (2.64").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days
Graton, CA
- Average rainfall days in January:
10 days - Average rainfall days in February:
9.1 days - Average rainfall days in March:
12.6 days - Average rainfall days in April:
7 days - Average rainfall days in May:
5.3 days - Average rainfall days in June:
1.9 days
- Average rainfall days in July:
1.5 days - Average rainfall days in August:
0.8 days - Average rainfall days in September:
2.8 days - Average rainfall days in October:
4.8 days - Average rainfall days in November:
6.5 days - Average rainfall days in December:
10.5 days
The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (0.8 days).
Average daylight / Average sunshine
Graton, 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 30min
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 48min - Average sunshine in February:
6h and 12min - 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 36min
- Average sunshine in July:
11h and 54min - Average sunshine in August:
11h and 48min - Average sunshine in September:
11h and 0min - Average sunshine in October:
6h and 54min - Average sunshine in November:
6h and 30min - Average sunshine in December:
5h and 42min
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
Graton, CA
- Average sunshine days in January:
19.9 days - Average sunshine days in February:
18.1 days - Average sunshine days in March:
17.1 days - Average sunshine days in April:
21.8 days - Average sunshine days in May:
23.4 days - Average sunshine days in June:
26.5 days
- Average sunshine days in July:
27.2 days - Average sunshine days in August:
27.1 days - Average sunshine days in September:
26.5 days - Average sunshine days in October:
24.8 days - Average sunshine days in November:
21.9 days - Average sunshine days in December:
19.5 days
The month with the most sunshine days is July (27.2 days).
The month with the least sunshine days is March (17.1 days).
Average UV index
Graton, 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
Graton, CA
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility
Graton, 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).
