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
Weather in January
January, like December, is a moderate winter month in Diablo, California, with an average temperature varying between 42.1°F (5.6°C) and 56.8°F (13.8°C). In January, the average high-temperature is practically the same as in December - a still mild 56.8°F (13.8°C). Weather in January »
Weather in February
The last month of the winter, February, is another mild month in Diablo, California, with an average temperature fluctuating between 42.6°F (5.9°C) and 59.7°F (15.4°C). In February, the average high-temperature is essentially the same as in January - a still mild 59.7°F (15.4°C). Weather in February »
Weather in March
The first month of the spring, March, is an enjoyable month in Diablo, California, with an average temperature varying between 63°F (17.2°C) and 43.5°F (6.4°C). In Diablo, the average high-temperature in March is practically the same as in February - a comfortable 63°F (17.2°C). Weather in March »
Weather in April
April in Diablo, California, is a pleasant spring month, with an average temperature fluctuating between 68°F (20°C) and 45.7°F (7.6°C). In April, the average high-temperature is relatively the same as in March - a pleasant 68°F (20°C). Weather in April »
Weather in May
May, the last month of the spring in Diablo, is another pleasant month, with an average temperature varying between 72.7°F (22.6°C) and 48.7°F (9.3°C). In May, the average high-temperature is relatively the same as in April - a still pleasant 72.7°F (22.6°C). Weather in May »
Weather in June
June, the first month of the summer in Diablo, is a warm month, with an average temperature ranging between max 80.2°F (26.8°C) and min 53.8°F (12.1°C). In Diablo, the average high-temperature in June slightly increases from a pleasant 72.7°F (22.6°C) in May to a moderately hot 80.2°F (26.8°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Diablo, California, with an average temperature fluctuating between 83.8°F (28.8°C) and 55.2°F (12.9°C). July is the warmest month, with an average high-temperature of 83.8°F (28.8°C) and an average low-temperature of 55.2°F (12.9°C). The average heat index in July is calculated to be a hot 86°F (30°C). Weather in July »
Weather in August
August, the last month of the summer in Diablo, is also a moderately hot month, with an average temperature varying between 82.9°F (28.3°C) and 56.7°F (13.7°C). In Diablo, the average high-temperature in August is essentially the same as in July - a still warm 82.9°F (28.3°C). Weather in August »
Weather in September
September, the first month of the autumn in Diablo, is also a moderately hot month, with an average temperature fluctuating between 56.7°F (13.7°C) and 82°F (27.8°C). In Diablo, the average high-temperature in September is relatively the same as in August - a still moderately hot 82°F (27.8°C). Weather in September »
Weather in October
October, like September, in Diablo, California, is a moderately hot autumn month, with temperature in the range of an average low of 53.8°F (12.1°C) and an average high of 74.3°F (23.5°C). In Diablo, the average high-temperature in October marginally drops from 82°F (27.8°C) in September to a still moderately hot 74.3°F (23.5°C). Weather in October »
Weather in November
November, the last month of the autumn in Diablo, is also an enjoyable month, with an average temperature varying between 64°F (17.8°C) and 46.9°F (8.3°C). In November, the average high-temperature decreases from a moderately hot 74.3°F (23.5°C) in October to an enjoyable 64°F (17.8°C). Weather in November »
Weather in December
The first month of the winter, December, is still a mild month in Diablo, California, with an average temperature varying between 55.8°F (13.2°C) and 42.3°F (5.7°C). December is the coldest month, with an average high-temperature of 55.8°F (13.2°C) and an average low-temperature of 42.3°F (5.7°C). Weather in December »
[Resources]FAQ
How much does it rain in Diablo?
Throughout the year, in Diablo, California, there are 65.6 rainfall days, and 11.22" (285mm) of precipitation is accumulated.
What is the month with the lowest UV index in Diablo?
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index.
What is the rainiest month in Diablo?
February is the month with the most rainfall. Rain falls for 8 days and accumulates 2.36" (60mm) of precipitation.
What is the most humid month in Diablo?
The most humid month in Diablo is March, with an average relative humidity of 74%.
When is Daylight Saving Time (DST) in Diablo?
On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from PDT to PST.
When are the longest days in Diablo?
June has the longest days of the year, with an average of 14h and 44min of daylight.
When is the highest UV index in Diablo?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What is the warmest month in Diablo?
July is the warmest month in Diablo, California, with an average high-temperature of 83.8°F (28.8°C) and an average low-temperature of 55.2°F (12.9°C).
What is the driest month in Diablo?
July and August are months without rainfall in Diablo.
What month has the most sunshine in Diablo?
The month with the most sunshine is July, with an average of 12.1h of sunshine.
What is the least humid month in Diablo?
With an average relative humidity of 57%, September is the least humid month.
When does it rain in Diablo?
Months with rainfall are January through June, September through December.
What is the coldest month in Diablo?
December is the coldest month in Diablo, California, with an average high-temperature of 55.8°F (13.2°C) and an average low-temperature of 42.3°F (5.7°C).
What is the month with the shortest days in Diablo?
With an average of 9h and 36min of daylight, December has the shortest days of the year.
What is the month with the least sunshine in Diablo?
The month with the least sunshine in Diablo, California, is December, with an average of 5.8h of sunshine.
Average temperature
Diablo, CA
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is December (55.8°F).
The months with the highest average low temperature are August and September (56.7°F).
The coldest month (with the lowest average low temperature) is January (42.1°F).
Average pressure
Diablo, CA
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.08"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 (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed
Diablo, CA
- Average wind speed in January:
4.5mph - Average wind speed in February:
5.3mph - Average wind speed in March:
5.7mph - Average wind speed in April:
6.2mph - Average wind speed in May:
6.9mph - Average wind speed in June:
6.7mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6mph - Average wind speed in September:
5.4mph - Average wind speed in October:
4.7mph - Average wind speed in November:
4.3mph - Average wind speed in December:
4.8mph
The windiest month (with the highest average wind speed) is May (6.9mph).
The calmest month (with the lowest average wind speed) is November (4.3mph).
Average humidity
Diablo, CA
The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is September (57%).
Average rainfall
Diablo, CA
- Average rainfall in January:
1.97" - Average rainfall in February:
2.36" - Average rainfall in March:
1.89" - Average rainfall in April:
0.67" - Average rainfall in May:
0.55" - Average rainfall in June:
0.08"
The wettest month (with the highest rainfall) is February (2.36").
The driest months (with the least rainfall) are July and August (0").
Average rainfall days
Diablo, CA
- Average rainfall days in January:
8.8 days - Average rainfall days in February:
8 days - Average rainfall days in March:
12.6 days - Average rainfall days in April:
7.1 days - Average rainfall days in May:
4.3 days - Average rainfall days in June:
1.3 days
- Average rainfall days in July:
0.8 days - Average rainfall days in August:
0.6 days - Average rainfall days in September:
1.7 days - Average rainfall days in October:
4.1 days - Average rainfall days in November:
6.5 days - Average rainfall days in December:
9.8 days
The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (0.6 days).
Average daylight / Average sunshine
Diablo, CA
- Average daylight in January:
9h and 54min - Average daylight in February:
10h and 49min - Average daylight in March:
11h and 59min - Average daylight in April:
13h and 13min - Average daylight in May:
14h and 14min - Average daylight in June:
14h and 44min
- Average daylight in July:
14h and 29min - Average daylight in August:
13h and 35min - Average daylight in September:
12h and 25min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 8min - Average daylight in December:
9h and 36min
The month with the longest days is June (Average daylight: 14h and 44min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
6h and 6min - Average sunshine in February:
6h and 6min - Average sunshine in March:
7h and 48min - Average sunshine in April:
10h and 18min - Average sunshine in May:
10h and 48min - Average sunshine in June:
11h and 42min
- Average sunshine in July:
12h and 6min - Average sunshine in August:
11h and 54min - Average sunshine in September:
11h and 6min - Average sunshine in October:
7h and 0min - Average sunshine in November:
6h and 30min - Average sunshine in December:
5h and 48min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days
Diablo, CA
- Average sunshine days in January:
21 days - Average sunshine days in February:
19.2 days - Average sunshine days in March:
17.6 days - Average sunshine days in April:
21.8 days - Average sunshine days in May:
26 days - Average sunshine days in June:
28.1 days
- Average sunshine days in July:
30.2 days - Average sunshine days in August:
29.9 days - Average sunshine days in September:
27.2 days - Average sunshine days in October:
25.9 days - Average sunshine days in November:
22.4 days - Average sunshine days in December:
20.6 days
The month with the most sunshine days is July (30.2 days).
The month with the least sunshine days is March (17.6 days).
Average UV index
Diablo, 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
Diablo, CA
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 6).
Average visibility
Diablo, 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).
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