Climate and monthly weather forecastOnyx, CA
Climate and monthly weather forecast
Weather in January
January is a cool winter month in Onyx, California, with temperature in the range of an average high of 50.7°F (10.4°C) and an average low of 33.1°F (0.6°C). Onyx greets January with an average high-temperature of a fresh 50.7°F (10.4°C), marking a slight deviation from the preceding month. Weather in January »Weather in February
The last month of the winter, February, is another cool month in Onyx, California, with an average temperature varying between 50.5°F (10.3°C) and 32.4°F (0.2°C). Onyx transitions into February recording an average high-temperature of a still fresh 50.5°F (10.3°C), closely aligning with the preceding month's temperature. Weather in February »Weather in March
The first month of the spring, March, is still a cool month in Onyx, California, with temperature in the range of an average high of 54.7°F (12.6°C) and an average low of 34.2°F (1.2°C). As February transitions into March, the average high-temperature rests at a still cool 54.7°F (12.6°C), maintaining a close resemblance to the previous month. Weather in March »Weather in April
April in Onyx, California, is a refreshing spring month, with an average temperature varying between 60.4°F (15.8°C) and 37.9°F (3.3°C). The onset of April introduces a subtle rise in the average high-temperature, nudging from a cool 54.7°F (12.6°C) in March to a moderate 60.4°F (15.8°C). Weather in April »Weather in May
The last month of the spring, May, is a comfortable month in Onyx, California, with an average temperature fluctuating between 44.6°F (7°C) and 67.8°F (19.9°C). May showcases a minor temperature ascent, adjusting from April's refreshing 60.4°F (15.8°C) to a comfortable 67.8°F (19.9°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Onyx, California, with temperature in the range of an average low of 52.7°F (11.5°C) and an average high of 79.3°F (26.3°C). The shift from May to June brings an increase in the average high-temperature, moving from a comfortable 67.8°F (19.9°C) to a warm 79.3°F (26.3°C). Weather in June »Weather in July
July, like June, in Onyx, California, is a moderately hot summer month, with an average temperature varying between 58.6°F (14.8°C) and 85.8°F (29.9°C). Onyx's July weather, marked by an average high temperature of 85.8°F (29.9°C) and an average low temperature of 58.6°F (14.8°C), is the warmest in the year. Weather in July »Weather in August
The last month of the summer, August, is another warm month in Onyx, California, with an average temperature ranging between max 84.7°F (29.3°C) and min 57.6°F (14.2°C). Onyx's weather in August, with an average high-temperature of a still warm 84.7°F (29.3°C), subtly shifts from July's 85.8°F (29.9°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Onyx, California, with an average temperature ranging between min 52.7°F (11.5°C) and max 78.6°F (25.9°C). September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from 84.7°F (29.3°C) in August to a still warm 78.6°F (25.9°C). Weather in September »Weather in October
October, like September, in Onyx, California, is another comfortable autumn month, with temperature in the range of an average high of 67.5°F (19.7°C) and an average low of 45°F (7.2°C). The arrival of October corresponds with a reduction in the average high-temperature, down from September's moderately hot 78.6°F (25.9°C) to a refreshing 67.5°F (19.7°C). Weather in October »Weather in November
November, the last month of the autumn in Onyx, is another mild month, with temperature in the range of an average low of 37.2°F (2.9°C) and an average high of 57.9°F (14.4°C). In the transition to November, Onyx observes a drop in the average high-temperature, moving from a comfortable 67.5°F (19.7°C) in October to a still refreshing 57.9°F (14.4°C). Weather in November »Weather in December
December, the first month of the winter in Onyx, is still a chilly month, with an average temperature varying between 48.7°F (9.3°C) and 30.9°F (-0.6°C). December is the coldest month, with the temperature often reaching an average high of 48.7°F (9.3°C) and an average low of 30.9°F (-0.6°C). 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
The month with the most rainfall in Onyx is January, when the rain falls for 7.2 days and typically aggregates up to 2.48" (63mm) of precipitation.
Throughout the year, in Onyx, California, there are 61 rainfall days, and 11.81" (300mm) of precipitation is accumulated.
January through April, November and December are months with snowfall.
Throughout the year, there are 9.1 snowfall days, and 9.13" (232mm) of snow is accumulated.
January, February and December, with an average of 6.7h of sunshine, are months with the least sunshine.
The most humid month is February, with an average relative humidity of 59%.
The month with the most snowfall is February, when snow falls for 2.7 days and typically aggregates up to 3.15" (80mm) of snow.
February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Onyx, California.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Onyx, California, 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.
May through October are months without snowfall.
The month with the least rainfall is June, when the rain falls for 1.3 days and typically collects 0.08" (2mm) of precipitation.
The month with the longest days is June, with an average of 14h and 30min of daylight.
The months with the most sunshine in Onyx, California, are June and July, with an average of 12.1h of sunshine.
June through August, with an average maximum UV index of 6, are months with the highest UV index in Onyx, California.
July registers as the month with the average highest temperatures in Onyx, reaching 85.8°F (29.9°C) at its peak and 58.6°F (14.8°C) at the lowest.
With an average relative humidity of 31%, August is the least humid month.
Onyx's December weather reaches an average high of 48.7°F (9.3°C) and an average low of 30.9°F (-0.6°C), making it the coldest month.
With an average of 9h and 48min of daylight, December has the shortest days of the year.
Average temperature
Onyx, CA
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is December (48.7°F).
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is December (30.9°F).
Average pressure
Onyx, CA
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.89"Hg - Average pressure in June:
29.85"Hg
- Average pressure in July:
29.88"Hg - Average pressure in August:
29.88"Hg - Average pressure in September:
29.89"Hg - Average pressure in October:
29.97"Hg - Average pressure in November:
30.05"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed
Onyx, CA
- Average wind speed in January:
5.4mph - Average wind speed in February:
5.9mph - Average wind speed in March:
6.5mph - Average wind speed in April:
7mph - Average wind speed in May:
7.3mph - Average wind speed in June:
7.3mph
- 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:
5.6mph - Average wind speed in November:
5.7mph - Average wind speed in December:
5.6mph
The windiest months (with the highest average wind speed) are May and June (7.3mph).
The calmest months (with the lowest average wind speed) are January and September (5.4mph).
Average humidity
Onyx, CA
The month with the highest relative humidity is February (59%).
The month with the lowest relative humidity is August (31%).
Average rainfall
Onyx, CA
- Average rainfall in January:
2.48" - Average rainfall in February:
2.05" - Average rainfall in March:
1.65" - Average rainfall in April:
1.02" - Average rainfall in May:
0.39" - Average rainfall in June:
0.08"
- Average rainfall in July:
0.43" - Average rainfall in August:
0.16" - Average rainfall in September:
0.12" - Average rainfall in October:
0.35" - Average rainfall in November:
1.18" - Average rainfall in December:
1.89"
The wettest month (with the highest rainfall) is January (2.48").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days
Onyx, CA
- Average rainfall days in January:
7.2 days - Average rainfall days in February:
6.9 days - Average rainfall days in March:
10.3 days - Average rainfall days in April:
7.1 days - Average rainfall days in May:
4.4 days - Average rainfall days in June:
1.3 days
- Average rainfall days in July:
5.1 days - Average rainfall days in August:
1.9 days - Average rainfall days in September:
2.5 days - Average rainfall days in October:
2.8 days - Average rainfall days in November:
4.2 days - Average rainfall days in December:
7.3 days
The month with the highest number of rainy days is March (10.3 days).
The month with the least rainy days is June (1.3 days).
Average snowfall
Onyx, CA
The month with the highest snowfall is February (3.15").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Onyx, CA
- Average snowfall days in January:
1.5 days - Average snowfall days in February:
2.7 days - Average snowfall days in March:
1.6 days - Average snowfall days in April:
0.8 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:
1 days - Average snowfall days in December:
1.5 days
The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Onyx, CA
- Average daylight in January:
10h and 6min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
14h and 6min - Average daylight in June:
14h and 30min
- Average daylight in July:
14h and 18min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 18min - Average daylight in December:
9h and 48min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January:
6h and 42min - Average sunshine in February:
6h and 42min - Average sunshine in March:
8h and 36min - Average sunshine in April:
11h and 6min - Average sunshine in May:
11h and 36min - Average sunshine in June:
12h and 6min
- Average sunshine in July:
12h and 6min - Average sunshine in August:
12h and 0min - Average sunshine in September:
11h and 0min - Average sunshine in October:
8h and 24min - Average sunshine in November:
7h and 12min - Average sunshine in December:
6h and 42min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 42min).
Average sunshine days
Onyx, CA
- Average sunshine days in January:
22.1 days - Average sunshine days in February:
19 days - Average sunshine days in March:
19.5 days - Average sunshine days in April:
21.3 days - Average sunshine days in May:
25.9 days - Average sunshine days in June:
28.3 days
- Average sunshine days in July:
24.2 days - Average sunshine days in August:
27.4 days - Average sunshine days in September:
26.6 days - Average sunshine days in October:
27.3 days - Average sunshine days in November:
24.3 days - Average sunshine days in December:
22 days
The month with the most sunshine days is June (28.3 days).
The month with the least sunshine days is February (19 days).
Average UV index
Onyx, CA
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are February, November and December (UV index 2).
Average cloud cover
Onyx, CA
The month with the most cloud cover is March (Cloud cover 26).
The months with the least cloud cover are August and September (Cloud cover 5).
Average visibility
Onyx, 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).
