Climate and monthly weather forecastAtascadero, CA
Climate and monthly weather forecast
Weather in January
January in Atascadero, California, is an enjoyable winter month, with an average temperature ranging between max 61°F (16.1°C) and min 44.2°F (6.8°C). January records an average high-temperature of a still refreshing 61°F (16.1°C), indicating a minor variation from the preceding month. Weather in January »Weather in February
The last month of the winter, February, is another comfortable month in Atascadero, California, with an average temperature varying between 61.3°F (16.3°C) and 43.2°F (6.2°C). Welcoming February, Atascadero notes an average high-temperature of a still refreshing 61.3°F (16.3°C), nearly consistent with January's 61°F (16.1°C). Weather in February »Weather in March
March, the first month of the spring in Atascadero, is still a refreshing month, with an average temperature varying between 64.4°F (18°C) and 44.2°F (6.8°C). The beginning of March reveals an average high-temperature of a still comfortable 64.4°F (18°C), showing minimal deviation from the previous month. Weather in March »Weather in April
April in Atascadero, California, is an agreeable spring month, with an average temperature fluctuating between 69.6°F (20.9°C) and 46.2°F (7.9°C). The onset of April brings an average high-temperature of a pleasant 69.6°F (20.9°C), nearly matching the March temperature. Weather in April »Weather in May
May, the last month of the spring in Atascadero, is a moderately hot month, with an average temperature ranging between max 73.9°F (23.3°C) and min 50.5°F (10.3°C). Atascadero's shift into May is marked by a subtle change to a moderately hot 73.9°F (23.3°C) from April's 69.6°F (20.9°C) in temperature. Weather in May »Weather in June
June, the first month of the summer in Atascadero, is still a warm month, with an average temperature ranging between min 55.2°F (12.9°C) and max 80.8°F (27.1°C). The onset of June marks a slight increase in the average high-temperature, moving from a moderately hot 73.9°F (23.3°C) in May to a still warm 80.8°F (27.1°C). Weather in June »Weather in July
July, like June, in Atascadero, California, is another warm summer month, with an average temperature varying between 58.8°F (14.9°C) and 85.3°F (29.6°C). Atascadero sees the arrival of July with an average high-temperature of a still warm 85.3°F (29.6°C), indicating a subtle variation from June. Weather in July »Weather in August
August, the last month of the summer in Atascadero, is also a moderately hot month, with an average temperature fluctuating between 85.5°F (29.7°C) and 59.5°F (15.3°C). August is Atascadero's warmest month, registering average high temperatures of 85.5°F (29.7°C) and lows of 59.5°F (15.3°C). During August, the heat index is evaluated at a tropical 87.8°F (31°C). Weather in August »Weather in September
September, the first month of the autumn in Atascadero, is also a moderately hot month, with temperature in the range of an average low of 59.9°F (15.5°C) and an average high of 83.3°F (28.5°C). Atascadero records an average high-temperature of a still warm 83.3°F (28.5°C) in September, maintaining a close correlation with August's 85.5°F (29.7°C). Weather in September »Weather in October
October, the same as September, is another warm autumn month in Atascadero, California, with an average temperature ranging between min 54.7°F (12.6°C) and max 75.6°F (24.2°C). October signifies a minor drop in average high-temperature, transitioning from 83.3°F (28.5°C) in September to a still moderately hot 75.6°F (24.2°C). Weather in October »Weather in November
November, the last month of the autumn in Atascadero, is another refreshing month, with an average temperature varying between 48.2°F (9°C) and 66.7°F (19.3°C). The shift from October to November includes a small decrease in the average high-temperature, from a warm 75.6°F (24.2°C) to an enjoyable 66.7°F (19.3°C). Weather in November »Weather in December
December, the first month of the winter in Atascadero, is still a refreshing month, with temperature in the range of an average low of 42.8°F (6°C) and an average high of 58.5°F (14.7°C). During the coldest month, December, temperatures average a high of 58.5°F (14.7°C) and a low of 42.8°F (6°C). Weather in December »Updated: Jun 21, 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, there are 54.8 rainfall days, and 8.66" (220mm) of precipitation is accumulated.
February and March, with an average relative humidity of 68%, are most humid months in Atascadero.
February and December, with an average of 6.3h of sunshine, are months with the least sunshine.
February, November and December, with an average maximum UV index of 3, are months with the lowest UV index.
March is the month with the most rainfall. Rain falls for 10.2 days and accumulates 1.73" (44mm) of precipitation.
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.
June and August are months with the least rain when the rain falls for 0.8 days and typically aggregates up to 0.04" (1mm) of rain.
The month with the longest days is June, with an average of 14h and 30min of daylight.
The months with the most sunshine are June and July, with an average of 12h of sunshine.
June through September, with an average maximum UV index of 6, are months with the highest UV index in Atascadero.
August stands out as Atascadero's warmest month, with temperatures ranging between an average high of 85.5°F (29.7°C) and a low of 59.5°F (15.3°C).
With an average relative humidity of 50%, September is the least humid month.
The coldest period is December, when temperatures fluctuate between an average high of 58.5°F (14.7°C) and a low of 42.8°F (6°C).
The month with the shortest days is December, with an average of 9h and 48min of daylight.
Average temperature
Atascadero, CA
The warmest month (with the highest average high temperature) is August (85.5°F).
The month with the lowest average high temperature is December (58.5°F).
The month with the highest average low temperature is September (59.9°F).
The coldest month (with the lowest average low temperature) is December (42.8°F).
Average pressure
Atascadero, CA
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
30.02"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.91"Hg - Average pressure in September:
29.91"Hg - Average pressure in October:
29.97"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).
Average wind speed
Atascadero, CA
- Average wind speed in January:
5.6mph - Average wind speed in February:
5.8mph - Average wind speed in March:
5.9mph - Average wind speed in April:
5.9mph - Average wind speed in May:
5.8mph - Average wind speed in June:
5.4mph
- Average wind speed in July:
5mph - Average wind speed in August:
4.5mph - Average wind speed in September:
4.5mph - Average wind speed in October:
5.2mph - Average wind speed in November:
5.2mph - Average wind speed in December:
5.7mph
The windiest months (with the highest average wind speed) are March and April (5.9mph).
The calmest months (with the lowest average wind speed) are August and September (4.5mph).
Average humidity
Atascadero, CA
The months with the highest relative humidity are February and March (68%).
The month with the lowest relative humidity is September (50%).
Average rainfall
Atascadero, CA
- Average rainfall in January:
1.69" - Average rainfall in February:
1.57" - Average rainfall in March:
1.73" - Average rainfall in April:
0.59" - Average rainfall in May:
0.24" - Average rainfall in June:
0.04"
- Average rainfall in July:
0.12" - Average rainfall in August:
0.04" - Average rainfall in September:
0.12" - Average rainfall in October:
0.39" - Average rainfall in November:
0.75" - Average rainfall in December:
1.38"
The wettest month (with the highest rainfall) is March (1.73").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days
Atascadero, CA
- Average rainfall days in January:
6.7 days - Average rainfall days in February:
7.3 days - Average rainfall days in March:
10.2 days - Average rainfall days in April:
6.6 days - Average rainfall days in May:
3.2 days - Average rainfall days in June:
0.8 days
- Average rainfall days in July:
2.2 days - Average rainfall days in August:
0.9 days - Average rainfall days in September:
1.8 days - Average rainfall days in October:
3 days - Average rainfall days in November:
4.5 days - Average rainfall days in December:
7.6 days
The month with the highest number of rainy days is March (10.2 days).
The month with the least rainy days is June (0.8 days).
Average daylight / Average sunshine
Atascadero, 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 30min - Average sunshine in February:
6h and 18min - Average sunshine in March:
8h and 18min - Average sunshine in April:
10h and 42min - Average sunshine in May:
11h and 18min - Average sunshine in June:
12h and 0min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
11h and 54min - Average sunshine in September:
11h and 18min - Average sunshine in October:
7h and 30min - Average sunshine in November:
6h and 48min - Average sunshine in December:
6h and 18min
The months with the most sunshine are June and July (Average sunshine: 12h and 0min).
The months with the least sunshine are February and December (Average sunshine: 6h and 18min).
Average sunshine days
Atascadero, CA
- Average sunshine days in January:
23.6 days - Average sunshine days in February:
19.7 days - Average sunshine days in March:
20.2 days - Average sunshine days in April:
23 days - Average sunshine days in May:
26.8 days - Average sunshine days in June:
28.9 days
- Average sunshine days in July:
28.2 days - Average sunshine days in August:
29.8 days - Average sunshine days in September:
28 days - Average sunshine days in October:
27 days - Average sunshine days in November:
24.5 days - Average sunshine days in December:
22 days
The month with the most sunshine days is August (29.8 days).
The month with the least sunshine days is February (19.7 days).
Average UV index
Atascadero, 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 February, November and December (UV index 3).
Average cloud cover
Atascadero, CA
The month with the most cloud cover is March (Cloud cover 31).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility
Atascadero, 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).
