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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 daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
Weather in January
January, like December, in Spring Valley, California, is another refreshing winter month, with an average temperature varying between 19.1°C and 9.8°C. Spring Valley's average high-temperature in January is a still refreshing 19.1°C, marking an insignificant difference from the 18°C of December. Weather in January »
Weather in February
The last month of the winter, February, is also an enjoyable month in Spring Valley, California, with an average temperature ranging between min 9.3°C and max 18.4°C. In February, the average high-temperature registers at a still refreshing 18.4°C, nearly identical to January's 19.1°C. Weather in February »
Weather in March
The first month of the spring, March, is still a comfortable month in Spring Valley, California, with an average temperature ranging between min 10°C and max 19.7°C. The average high-temperature in March, at a still comfortable 19.7°C, reveals a modest deviation from February's 18.4°C. Weather in March »
Weather in April
April in Spring Valley, California, is a pleasant spring month, with an average temperature fluctuating between 10.8°C and 21°C. Spring Valley, California, marks the start of April with an average high-temperature of a pleasant 21°C, hinting at a slight fluctuation from March's 19.7°C. Weather in April »
Weather in May
The last month of the spring, May, is another pleasant month in Spring Valley, California, with an average temperature ranging between max 21.7°C and min 12.5°C. As May takes its course, Spring Valley's average high-temperature registers at a still agreeable 21.7°C, closely aligning with the preceding month. Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Spring Valley, California, with an average temperature fluctuating between 14.7°C and 24.4°C. Spring Valley experiences an average high-temperature of a warm 24.4°C in June, subtly different from May's 21.7°C. Weather in June »
Weather in July
July, like June, in Spring Valley, California, is a moderately hot summer month, with an average temperature fluctuating between 17.8°C and 27°C. The shift into July uncovers an average high-temperature of a still warm 27°C, subtly different from the previous month. Weather in July »
Weather in August
August, the last month of the summer in Spring Valley, is also a moderately hot month, with an average temperature fluctuating between 28.3°C and 18.8°C. Spring Valley, California, experiences its highest temperatures in August, with an average peak of 28.3°C and a low of 18.8°C. The heat index value for August is evaluated at a tropical 30°C. Weather in August »
Weather in September
September, the first month of the autumn in Spring Valley, is also a moderately hot month, with an average temperature ranging between min 18.1°C and max 27.6°C. Spring Valley's shift from August to September is accompanied by an average high-temperature of a still warm 27.6°C, a slight deviation from 28.3°C. Weather in September »
Weather in October
October, the same as September, is a moderately hot autumn month in Spring Valley, California, with an average temperature varying between 15.4°C and 25°C. October notes an average high-temperature of a still moderately hot 25°C, subtly differing from September's 27.6°C. Weather in October »
Weather in November
November, the last month of the autumn in Spring Valley, is another pleasant month, with an average temperature fluctuating between 21.7°C and 12.5°C. The start of November involves a subtle temperature drop, shifting from a warm 25°C in October to an agreeable 21.7°C. Weather in November »
Weather in December
The first month of the winter, December, is still a comfortable month in Spring Valley, California, with temperature in the range of an average low of 9.6°C and an average high of 18°C. The coldest period tends to be December, when average temperatures fluctuate between a high of 18°C and a low of 9.6°C. Weather in December »
Updated: Jul 19, 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 many days does it rain?
Throughout the year, there are 33 rainfall days, and 64mm of precipitation is accumulated.
What are the months with the lowest UV index?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 4.
What is the wettest month?
The month with the most rainfall is February, when the rain falls for 3.3 days and typically aggregates up to 14mm of precipitation.
What are the months with the least sunshine?
February and December, with an average of 6.7h of sunshine, are months with the least sunshine.
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 most humid month?
May is the most humid month in Spring Valley, with an average relative humidity of 67%.
What is the driest month?
June, July and October are months with the least rain when the rain falls for 0.8 days and typically aggregates up to 1mm of rain.
When are the longest days?
The month with the longest days is June, with an average of 14h and 18min of daylight.
What are the months with the highest UV index?
June through September, with an average maximum UV index of 6, are months with the highest UV index.
What month has the most sunshine?
The month with the most sunshine is July, with an average of 12.1h of sunshine.
What are the warmest months?
August is Spring Valley's warmest month, registering average high temperatures of 28.3°C and lows of 18.8°C.
What is the least humid month?
The least humid month is November, with an average relative humidity of 54%.
What is the coldest time of year?
Temperature records mark December as the coldest month, with highs averaging 18°C and lows at 9.6°C.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 10h and 0min of daylight.
Average temperature
Spring Valley, CA
The warmest month (with the highest average high temperature) is August (28.3°C).
The month with the lowest average high temperature is December (18°C).
The month with the highest average low temperature is August (18.8°C).
The coldest month (with the lowest average low temperature) is February (9.3°C).
Average pressure
Spring Valley, CA
- Average pressure in January:
1018.8mbar - Average pressure in February:
1017.3mbar - Average pressure in March:
1016.4mbar - Average pressure in April:
1014.4mbar - Average pressure in May:
1013mbar - Average pressure in June:
1011.6mbar
- Average pressure in July:
1012.6mbar - Average pressure in August:
1011.9mbar - Average pressure in September:
1011.7mbar - Average pressure in October:
1013.6mbar - Average pressure in November:
1016.4mbar - Average pressure in December:
1017.9mbar
The month with the highest atmospheric pressure is January (1018.8mbar).
The month with the lowest atmospheric pressure is June (1011.6mbar).
Average wind speed
Spring Valley, CA
- Average wind speed in January:
8km/h - Average wind speed in February:
8.4km/h - Average wind speed in March:
8.4km/h - Average wind speed in April:
9km/h - Average wind speed in May:
8.9km/h - Average wind speed in June:
8.1km/h
- Average wind speed in July:
7.9km/h - Average wind speed in August:
7.6km/h - Average wind speed in September:
7.5km/h - Average wind speed in October:
7.2km/h - Average wind speed in November:
7.7km/h - Average wind speed in December:
8km/h
The windiest month (with the highest average wind speed) is April (9km/h).
The calmest month (with the lowest average wind speed) is October (7.2km/h).
Average humidity
Spring Valley, CA
The month with the highest relative humidity is May (67%).
The month with the lowest relative humidity is November (54%).
Average rainfall
Spring Valley, CA
The wettest month (with the highest rainfall) is February (14mm).
The driest months (with the least rainfall) are June, July and October (1mm).
Average rainfall days
Spring Valley, CA
- Average rainfall days in January:
2.8 days - Average rainfall days in February:
3.3 days - Average rainfall days in March:
5.3 days - Average rainfall days in April:
4.2 days - Average rainfall days in May:
3 days - Average rainfall days in June:
0.8 days
- Average rainfall days in July:
2 days - Average rainfall days in August:
1.9 days - Average rainfall days in September:
2.2 days - Average rainfall days in October:
1.5 days - Average rainfall days in November:
2.5 days - Average rainfall days in December:
3.5 days
The month with the highest number of rainy days is March (5.3 days).
The month with the least rainy days is June (0.8 days).
Average daylight / Average sunshine
Spring Valley, CA
- Average daylight in January:
10h and 2min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 5min - Average daylight in June:
14h and 2min
- Average daylight in July:
14h and 1min - Average daylight in August:
13h and 2min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 3min - Average daylight in December:
10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January:
6h and 5min - Average sunshine in February:
6h and 4min - Average sunshine in March:
8h and 4min - Average sunshine in April:
10h and 5min - Average sunshine in May:
10h and 4min - Average sunshine in June:
11h and 5min
- Average sunshine in July:
12h and 1min - Average sunshine in August:
11h and 5min - Average sunshine in September:
10h and 2min - Average sunshine in October:
8h and 5min - Average sunshine in November:
7h and 1min - Average sunshine in December:
6h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 42min).
Average sunshine days
Spring Valley, CA
- Average sunshine days in January:
27.1 days - Average sunshine days in February:
23.4 days - Average sunshine days in March:
25.7 days - Average sunshine days in April:
26.7 days - Average sunshine days in May:
26.3 days - Average sunshine days in June:
28.8 days
- Average sunshine days in July:
28.4 days - Average sunshine days in August:
27.8 days - Average sunshine days in September:
27.2 days - Average sunshine days in October:
28.9 days - Average sunshine days in November:
26.2 days - Average sunshine days in December:
26.7 days
The month with the most sunshine days is October (28.9 days).
The month with the least sunshine days is February (23.4 days).
Average UV index
Spring Valley, CA
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover
Spring Valley, CA
The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility
Spring Valley, CA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).