Climate and monthly weather forecastMonte Rio, CA
Climate and monthly weather forecast
Weather in January
January, like December, is a moderate winter month in Monte Rio, California, with temperature in the range of an average low of 42.3°F (5.7°C) and an average high of 57.7°F (14.3°C). The shift into January records an average high-temperature of a still mild 57.7°F (14.3°C), subtly varied from December's 56.3°F (13.5°C). Weather in January »Weather in February
The last month of the winter, February, is another mild month in Monte Rio, California, with an average temperature fluctuating between 59.2°F (15.1°C) and 41.9°F (5.5°C). Monte Rio notes an average high-temperature of a still mild 59.2°F (15.1°C) in February, hardly diverging from January. Weather in February »Weather in March
The first month of the spring, March, is also a moderate month in Monte Rio, California, with an average temperature varying between 43°F (6.1°C) and 60.6°F (15.9°C). Monte Rio experiences a subtle adjustment in high-temperatures to a still refreshing 60.6°F (15.9°C) with the onset of March, maintaining near parity with February's 59.2°F (15.1°C). Weather in March »Weather in April
April in Monte Rio, California, is a refreshing spring month, with an average temperature fluctuating between 44.8°F (7.1°C) and 65.7°F (18.7°C). As Monte Rio welcomes April, the average high-temperature is noted at a still refreshing 65.7°F (18.7°C), closely aligning with the preceding month. Weather in April »Weather in May
The last month of the spring, May, is an agreeable month in Monte Rio, California, with an average temperature fluctuating between 69.6°F (20.9°C) and 47.5°F (8.6°C). The shift to May signals an average high-temperature of an agreeable 69.6°F (20.9°C), subtly varied from April's 65.7°F (18.7°C). Weather in May »Weather in June
June, the first month of the summer in Monte Rio, is a moderately hot month, with an average temperature varying between 77.2°F (25.1°C) and 51.8°F (11°C). With the onset of June, Monte Rio experiences a subtle temperature shift, with the average high-temperature moving from a pleasant 69.6°F (20.9°C) in May to a warm 77.2°F (25.1°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Monte Rio, California, with an average temperature ranging between max 80.2°F (26.8°C) and min 53.1°F (11.7°C). As Monte Rio, California, welcomes July, the average high-temperature is noted at a still moderately hot 80.2°F (26.8°C), closely aligning with the preceding month. Weather in July »Weather in August
August, the last month of the summer in Monte Rio, is another warm month, with an average temperature fluctuating between 81°F (27.2°C) and 53.4°F (11.9°C). August brings the highest temperatures, with an average high of 81°F (27.2°C) and an average low of 53.4°F (11.9°C). For most parts of August, the heat index is calculated to be 84.2°F (29°C). Weather in August »Weather in September
September, the first month of the autumn in Monte Rio, is still a warm month, with an average temperature ranging between max 79.9°F (26.6°C) and min 53.4°F (11.9°C). Monte Rio's average high-temperature marks a still warm 79.9°F (26.6°C) with the advent of September, closely mirroring that of the preceding month. Weather in September »Weather in October
October, the same as September, in Monte Rio, California, is another pleasant autumn month, with temperature in the range of an average high of 72.5°F (22.5°C) and an average low of 50.5°F (10.3°C). The onset of October is marked by a minor decrease in temperature, transitioning from a warm 79.9°F (26.6°C) in September to an agreeable 72.5°F (22.5°C). Weather in October »Weather in November
The last month of the autumn, November, is another refreshing month in Monte Rio, California, with an average temperature fluctuating between 45.3°F (7.4°C) and 63.5°F (17.5°C). Monte Rio's weather changes with the onset of November, slightly falling from a pleasant 72.5°F (22.5°C) in October to an enjoyable 63.5°F (17.5°C). Weather in November »Weather in December
December, the first month of the winter in Monte Rio, is still a refreshing month, with an average temperature varying between 41.4°F (5.2°C) and 56.3°F (13.5°C). December, with an average high of 56.3°F (13.5°C) and a low of 41.4°F (5.2°C), signifies the coldest month of the year. 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
Throughout the year, in Monte Rio, there are 60.1 rainfall days, and 12.87" (327mm) of precipitation is accumulated.
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 7.3 days and typically aggregates up to 3.27" (83mm) of precipitation.
With an average relative humidity of 77%, March is the most humid month.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Monte Rio, 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.
The month with the longest days in Monte Rio, California, is June, with an average of 14h and 48min of daylight.
June through August, with an average maximum UV index of 6, are months with the highest UV index.
The months with the least rainfall are July and August Rain falls for 1.3 days and accumulates 0.04" (1mm) of rain.
The month with the most sunshine in Monte Rio is July, with an average of 11.8h of sunshine.
In Monte Rio, the peak temperatures are generally noted in August, averaging a high of 81°F (27.2°C) and a low of 53.4°F (11.9°C).
With an average relative humidity of 62%, September is the least humid month in Monte Rio.
December is the coldest month of the year in Monte Rio, registering average temperatures as high as 56.3°F (13.5°C) and as low as 41.4°F (5.2°C).
December has the shortest days of the year, with an average of 9h and 30min of daylight.
December has the least sunshine of the year in Monte Rio, California, with an average of 5.4h of sunshine.
Average temperature
Monte Rio, CA
The warmest month (with the highest average high temperature) is August (81°F).
The month with the lowest average high temperature is December (56.3°F).
The months with the highest average low temperature are August and September (53.4°F).
The coldest month (with the lowest average low temperature) is December (41.4°F).
Average pressure
Monte Rio, 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
Monte Rio, CA
- Average wind speed in January:
5.3mph - Average wind speed in February:
6.2mph - Average wind speed in March:
6.5mph - Average wind speed in April:
7.1mph - Average wind speed in May:
7.2mph - Average wind speed in June:
6.9mph
- Average wind speed in July:
5.6mph - Average wind speed in August:
5.1mph - Average wind speed in September:
5.3mph - Average wind speed in October:
5.3mph - Average wind speed in November:
5mph - Average wind speed in December:
5.2mph
The windiest month (with the highest average wind speed) is May (7.2mph).
The calmest month (with the lowest average wind speed) is November (5mph).
Average humidity
Monte Rio, CA
The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is September (62%).
Average rainfall
Monte Rio, CA
- Average rainfall in January:
1.97" - Average rainfall in February:
3.27" - Average rainfall in March:
2.01" - Average rainfall in April:
0.51" - Average rainfall in May:
0.79" - Average rainfall in June:
0.12"
- Average rainfall in July:
0.04" - Average rainfall in August:
0.04" - Average rainfall in September:
0.08" - Average rainfall in October:
0.63" - Average rainfall in November:
1.1" - Average rainfall in December:
2.32"
The wettest month (with the highest rainfall) is February (3.27").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days
Monte Rio, CA
- Average rainfall days in January:
8.1 days - Average rainfall days in February:
7.3 days - Average rainfall days in March:
10.3 days - Average rainfall days in April:
5.6 days - Average rainfall days in May:
4.8 days - Average rainfall days in June:
1.8 days
- Average rainfall days in July:
1.3 days - Average rainfall days in August:
0.9 days - Average rainfall days in September:
1.9 days - Average rainfall days in October:
3.6 days - Average rainfall days in November:
5.9 days - Average rainfall days in December:
8.6 days
The month with the highest number of rainy days is March (10.3 days).
The month with the least rainy days is August (0.9 days).
Average daylight / Average sunshine
Monte Rio, 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 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 36min - Average sunshine in February:
5h and 54min - Average sunshine in March:
7h and 6min - Average sunshine in April:
9h and 48min - Average sunshine in May:
10h and 12min - Average sunshine in June:
11h and 24min
- Average sunshine in July:
11h and 48min - Average sunshine in August:
11h and 42min - Average sunshine in September:
10h and 48min - Average sunshine in October:
6h and 48min - Average sunshine in November:
6h and 18min - Average sunshine in December:
5h and 24min
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 24min).
Average sunshine days
Monte Rio, CA
- Average sunshine days in January:
22 days - Average sunshine days in February:
19.9 days - Average sunshine days in March:
20 days - Average sunshine days in April:
23.3 days - Average sunshine days in May:
24.8 days - Average sunshine days in June:
27.3 days
- Average sunshine days in July:
28.9 days - Average sunshine days in August:
28.4 days - Average sunshine days in September:
27.9 days - Average sunshine days in October:
26.3 days - Average sunshine days in November:
23.5 days - Average sunshine days in December:
21.3 days
The month with the most sunshine days is July (28.9 days).
The month with the least sunshine days is February (19.9 days).
Average UV index
Monte Rio, CA
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover
Monte Rio, CA
The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility
Monte Rio, 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).
