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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 snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, in Rio Dell, California, is a cool winter month, with an average temperature ranging between min 41.4°F (5.2°C) and max 54.3°F (12.4°C). In January, Rio Dell notes an average high-temperature of a still cool 54.3°F (12.4°C), hardly different from the preceding month. Weather in January »
Weather in February
The last month of the winter, February, is also a fresh month in Rio Dell, California, with an average temperature fluctuating between 39.7°F (4.3°C) and 53.6°F (12°C). February's advent denotes a minor fluctuation in the average high-temperature to a still fresh 53.6°F (12°C) from January's 54.3°F (12.4°C). Weather in February »
Weather in March
March, the first month of the spring in Rio Dell, is also a fresh month, with an average temperature ranging between min 40.3°F (4.6°C) and max 54.9°F (12.7°C). Rio Dell records a slight change with March's average high-temperatures adjusting to a still fresh 54.9°F (12.7°C) from February's 53.6°F (12°C). Weather in March »
Weather in April
April is a mild spring month in Rio Dell, California, with an average temperature varying between 58.5°F (14.7°C) and 41.5°F (5.3°C). The arrival of April coincides with an average high-temperature of a mild 58.5°F (14.7°C), indicating a minimal shift from March's 54.9°F (12.7°C). Weather in April »
Weather in May
May, the last month of the spring in Rio Dell, is a comfortable month, with temperature in the range of an average low of 44.1°F (6.7°C) and an average high of 63°F (17.2°C). May denotes a minimal variation in the average high-temperature to a still refreshing 63°F (17.2°C) from April's 58.5°F (14.7°C). Weather in May »
Weather in June
The first month of the summer, June, is also an enjoyable month in Rio Dell, California, with an average temperature fluctuating between 48.7°F (9.3°C) and 67.8°F (19.9°C). Rio Dell, California, experiences a transition to a still enjoyable 67.8°F (19.9°C) in average high-temperatures with the arrival of June, not greatly differing from May's 63°F (17.2°C). Weather in June »
Weather in July
July in Rio Dell, California, is an agreeable summer month, with an average temperature fluctuating between 51.4°F (10.8°C) and 73°F (22.8°C). Rio Dell's July reports an average high-temperature of a pleasant 73°F (22.8°C), exhibiting a minor difference from June. Weather in July »
Weather in August
The last month of the summer, August, is a warm month in Rio Dell, California, with an average temperature fluctuating between 74.1°F (23.4°C) and 51.8°F (11°C). In Rio Dell, August is the warmest month, with temperatures averaging a high of 74.1°F (23.4°C) and a low of 51.8°F (11°C). Weather in August »
Weather in September
September, the first month of the autumn in Rio Dell, is also an agreeable month, with temperature in the range of an average low of 50.9°F (10.5°C) and an average high of 72.5°F (22.5°C). September's advent notes a subtle adjustment in average high-temperature to an agreeable 72.5°F (22.5°C) from August. Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Rio Dell, California, with an average temperature fluctuating between 47.8°F (8.8°C) and 66.2°F (19°C). The transition into October subtly indicates a reduction in the average high-temperature, down to a refreshing 66.2°F (19°C) from September's pleasant 72.5°F (22.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is another mild month in Rio Dell, California, with temperature in the range of an average low of 43.5°F (6.4°C) and an average high of 58.1°F (14.5°C). November signals a slight drop in average high-temperature, sliding from October's 66.2°F (19°C) to a still refreshing 58.1°F (14.5°C). Weather in November »
Weather in December
December, the first month of the winter in Rio Dell, is still a cool month, with an average temperature varying between 52.9°F (11.6°C) and 40.1°F (4.5°C). With an average high-temperature of 52.9°F (11.6°C) and an average low-temperature of 40.1°F (4.5°C), December is the coldest month. Weather in December »
[Resources]Frequently asked questions
How much does it rain in Rio Dell?
Throughout the year, there are 110.9 rainfall days, and 28.27" (718mm) of precipitation is accumulated.
When it does not snow in Rio Dell?
January, March through December are months without snowfall in Rio Dell.
How much does it snow in Rio Dell?
In Rio Dell, California, during the entire year, snow aggregates up to 0.59" (15mm).
When is the lowest UV index in Rio Dell?
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 3.
When does it snow in Rio Dell?
The only month with snowfall in Rio Dell is February.
What is the snowiest month in Rio Dell?
The month with the most snowfall is February, when snow falls for 0.3 days and typically aggregates up to 0.59" (15mm) of snow.
What is the most humid month in Rio Dell?
The most humid month in Rio Dell is March, with an average relative humidity of 83%.
When is Daylight Saving Time (DST) in Rio Dell?
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.
When are the longest days in Rio Dell?
June has the longest days of the year in Rio Dell, California, with an average of 15h and 0min of daylight.
What are the months with the highest UV index in Rio Dell?
The months with the highest UV index in Rio Dell, California, are June through August, with an average maximum UV index of 5.
What is the driest month in Rio Dell?
July is the month with the least rainfall. Rain falls for 1.8 days and accumulates 0.08" (2mm) of precipitation.
What are the months with the most sunshine in Rio Dell?
The months with the most sunshine are July and August, with an average of 11.6h of sunshine.
What time of the year is the hottest in Rio Dell?
August, with its high-temperature average of 74.1°F (23.4°C) and a low-temperature average of 51.8°F (11°C), is the warmest month.
What is the least humid month in Rio Dell?
With an average relative humidity of 73%, September is the least humid month.
What is the coldest month in Rio Dell?
Rio Dell, California, notes the coldest temperatures in December, with a average high of 52.9°F (11.6°C) and a low of 40.1°F (4.5°C).
What is the wettest month in Rio Dell?
December is the month with the most rainfall in Rio Dell, California. Rain falls for 14.8 days and accumulates 4.96" (126mm) of precipitation.
What is the month with the shortest days in Rio Dell?
December has the shortest days of the year, with an average of 9h and 18min of daylight.
What is the month with the least sunshine in Rio Dell?
December has the least sunshine of the year in Rio Dell, with an average of 5h of sunshine.
Average temperature
Rio Dell, CA
The warmest month (with the highest average high temperature) is August (74.1°F).
The month with the lowest average high temperature is December (52.9°F).
The month with the highest average low temperature is August (51.8°F).
The coldest month (with the lowest average low temperature) is February (39.7°F).
Average pressure
Rio Dell, CA
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
30.06"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.98"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.08"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 August and September (29.96"Hg).
Average wind speed
Rio Dell, CA
- Average wind speed in January:
6.8mph - Average wind speed in February:
7.5mph - Average wind speed in March:
7.6mph - Average wind speed in April:
7.4mph - Average wind speed in May:
7.2mph - Average wind speed in June:
7.7mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
5.9mph - Average wind speed in September:
6mph - Average wind speed in October:
6.5mph - Average wind speed in November:
6.6mph - Average wind speed in December:
7mph
The windiest month (with the highest average wind speed) is June (7.7mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity
Rio Dell, CA
The month with the highest relative humidity is March (83%).
The month with the lowest relative humidity is September (73%).
Average rainfall
Rio Dell, CA
- Average rainfall in January:
4.41" - Average rainfall in February:
3.98" - Average rainfall in March:
4.53" - Average rainfall in April:
2.28" - Average rainfall in May:
1.69" - Average rainfall in June:
0.51"
- Average rainfall in July:
0.08" - Average rainfall in August:
0.12" - Average rainfall in September:
0.59" - Average rainfall in October:
1.89" - Average rainfall in November:
3.23" - Average rainfall in December:
4.96"
The wettest month (with the highest rainfall) is December (4.96").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days
Rio Dell, CA
- Average rainfall days in January:
13.8 days - Average rainfall days in February:
13.3 days - Average rainfall days in March:
17.3 days - Average rainfall days in April:
12.3 days - Average rainfall days in May:
8.1 days - Average rainfall days in June:
4.6 days
- Average rainfall days in July:
1.8 days - Average rainfall days in August:
1.8 days - Average rainfall days in September:
4 days - Average rainfall days in October:
8 days - Average rainfall days in November:
11.1 days - Average rainfall days in December:
14.8 days
The month with the highest number of rainy days is March (17.3 days).
The months with the least rainy days are July and August (1.8 days).
Average snowfall
Rio Dell, CA
The month with the highest snowfall is February (0.59").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days
Rio Dell, CA
- Average snowfall days in January:
0 days - Average snowfall days in February:
0.3 days - Average snowfall days in March:
0 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0.1 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Rio Dell, CA
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 4min - 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:
9h and 5min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
5h and 1min - Average sunshine in February:
5h and 2min - Average sunshine in March:
6h and 3min - Average sunshine in April:
8h and 4min - Average sunshine in May:
9h and 5min - Average sunshine in June:
10h and 5min
- Average sunshine in July:
11h and 4min - Average sunshine in August:
11h and 4min - Average sunshine in September:
10h and 1min - Average sunshine in October:
6h and 4min - Average sunshine in November:
5h and 5min - Average sunshine in December:
5h and 0min
The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days
Rio Dell, CA
- Average sunshine days in January:
15.6 days - Average sunshine days in February:
14.1 days - Average sunshine days in March:
11.9 days - Average sunshine days in April:
15.4 days - Average sunshine days in May:
21.1 days - Average sunshine days in June:
23.8 days
- Average sunshine days in July:
28.5 days - Average sunshine days in August:
27.9 days - Average sunshine days in September:
25.8 days - Average sunshine days in October:
22.1 days - Average sunshine days in November:
17.3 days - Average sunshine days in December:
15.1 days
The month with the most sunshine days is July (28.5 days).
The month with the least sunshine days is March (11.9 days).
Average UV index
Rio Dell, CA
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover
Rio Dell, CA
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility
Rio Dell, CA
The months with the highest visibility are January, February, March, April, June, September, October, November and December (6mi).
The months with the lowest visibility are May, July and August (5mi).
Rio Dell, California, USA
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