Climate and monthly weather forecastAlpine, CA
Climate and monthly weather forecast
Weather in January
January, like December, in Alpine, California, is another comfortable winter month, with an average temperature varying between 45°F (7.2°C) and 63.9°F (17.7°C). January's advent presents an average high-temperature of a still enjoyable 63.9°F (17.7°C), indicating a slight variation from the conditions of the previous month. Weather in January »Weather in February
February, the last month of the winter in Alpine, is also an enjoyable month, with an average temperature ranging between max 63.3°F (17.4°C) and min 44.2°F (6.8°C). The advent of February signifies a minor shift to an average high-temperature of a still enjoyable 63.3°F (17.4°C), aligning closely with January. Weather in February »Weather in March
March, the first month of the spring in Alpine, is also an enjoyable month, with an average temperature fluctuating between 46°F (7.8°C) and 66.7°F (19.3°C). March's beginning signals an average high-temperature of a still comfortable 66.7°F (19.3°C), barely different from February's 63.3°F (17.4°C). Weather in March »Weather in April
April in Alpine, California, is an agreeable spring month, with an average temperature varying between 47.8°F (8.8°C) and 70.7°F (21.5°C). March's transformation into April witnesses an average high-temperature of a pleasant 70.7°F (21.5°C), noting a minor change from the preceding month. Weather in April »Weather in May
The last month of the spring, May, is a warm month in Alpine, California, with an average temperature varying between 51.3°F (10.7°C) and 73.6°F (23.1°C). The introduction of May sees an average high-temperature of a warm 73.6°F (23.1°C), hardly deviating from April. Weather in May »Weather in June
June, the first month of the summer in Alpine, is also a moderately hot month, with an average temperature fluctuating between 56.3°F (13.5°C) and 81.3°F (27.4°C). The arrival of June signals a slight increase in the average high-temperature, moving from 73.6°F (23.1°C) in May to a still warm 81.3°F (27.4°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Alpine, California, with an average temperature ranging between min 62.8°F (17.1°C) and max 85.8°F (29.9°C). On the advent of July, Alpine's average high-temperature exhibits a minor adjustment to a still warm 85.8°F (29.9°C) from June's 81.3°F (27.4°C). Weather in July »Weather in August
August, the last month of the summer in Alpine, is a tropical month, with temperature in the range of an average high of 87.3°F (30.7°C) and an average low of 64.9°F (18.3°C). August, noted for its average high-temperature of 87.3°F (30.7°C) and an average low-temperature of 64.9°F (18.3°C), is considered the warmest month. The average heat index in August is computed to be a hot 91.4°F (33°C). Weather in August »Weather in September
September, the first month of the autumn in Alpine, is still a warm month, with an average temperature fluctuating between 84.2°F (29°C) and 62.8°F (17.1°C). September's weather displays an average high-temperature of a warm 84.2°F (29°C), slightly varied from August's 87.3°F (30.7°C). Weather in September »Weather in October
October, the same as September, is another warm autumn month in Alpine, California, with an average temperature ranging between min 56.3°F (13.5°C) and max 76.8°F (24.9°C). The commencement of October includes a gentle temperature shift, with the average high-temperature dropping a bit from a moderately hot 84.2°F (29°C) in September to a still warm 76.8°F (24.9°C). Weather in October »Weather in November
The last month of the autumn, November, is also an agreeable month in Alpine, California, with an average temperature varying between 50.2°F (10.1°C) and 69.1°F (20.6°C). A subtle change in temperatures is noted as October gives way to November, with average highs reducing from a warm 76.8°F (24.9°C) to an agreeable 69.1°F (20.6°C). Weather in November »Weather in December
December, the first month of the winter in Alpine, is still a comfortable month, with an average temperature varying between 44.6°F (7°C) and 61.3°F (16.3°C). December is Alpine's coldest month, registering average high temperatures of 61.3°F (16.3°C) and lows of 44.6°F (7°C). Weather in December »Updated: Jul 11, 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 62 rainfall days, and 6.38" (162mm) of precipitation is accumulated.
The month with the most rainfall is February, when the rain falls for 6.4 days and typically aggregates up to 0.94" (24mm) 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.
With an average relative humidity of 62%, May is the most humid month.
June is the month with the least rainfall in Alpine. Rain falls for 1.5 days and accumulates 0.08" (2mm) of precipitation.
June has the longest days of the year, with an average of 14h and 18min of daylight.
The months with the most sunshine are June and July, with an average of 12.1h of sunshine.
June through September, with an average maximum UV index of 6, are months with the highest UV index.
In Alpine, August records the average highest temperatures, peaking at 87.3°F (30.7°C) and reaching a low of 64.9°F (18.3°C).
November is the least humid month, with an average relative humidity of 51%.
November and December, with an average maximum UV index of 3, are months with the lowest UV index in Alpine.
Alpine experiences its average lowest temperatures in December, reaching a peak of 61.3°F (16.3°C) and a minimum of 44.6°F (7°C).
December has the shortest days of the year in Alpine, with an average of 10h and 0min of daylight.
With an average of 6.7h of sunshine, December has the least sunshine of the year.
Average temperature
Alpine, CA
The warmest month (with the highest average high temperature) is August (87.3°F).
The month with the lowest average high temperature is December (61.3°F).
The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is February (44.2°F).
Average pressure
Alpine, CA
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.03"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.9"Hg - Average pressure in June:
29.85"Hg
- Average pressure in July:
29.89"Hg - Average pressure in August:
29.87"Hg - Average pressure in September:
29.86"Hg - Average pressure in October:
29.92"Hg - Average pressure in November:
30.01"Hg - Average pressure in December:
30.06"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed
Alpine, CA
- Average wind speed in January:
5.1mph - Average wind speed in February:
5.2mph - Average wind speed in March:
5.3mph - Average wind speed in April:
5.6mph - Average wind speed in May:
5.7mph - Average wind speed in June:
5.1mph
- Average wind speed in July:
4.5mph - Average wind speed in August:
4.2mph - Average wind speed in September:
4.1mph - Average wind speed in October:
4.5mph - Average wind speed in November:
5.1mph - Average wind speed in December:
5.1mph
The windiest month (with the highest average wind speed) is May (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.1mph).
Average humidity
Alpine, CA
The month with the highest relative humidity is May (62%).
The month with the lowest relative humidity is November (51%).
Average rainfall
Alpine, CA
- Average rainfall in January:
0.75" - Average rainfall in February:
0.94" - Average rainfall in March:
0.63" - Average rainfall in April:
0.35" - Average rainfall in May:
0.24" - Average rainfall in June:
0.08"
- Average rainfall in July:
0.71" - Average rainfall in August:
0.63" - Average rainfall in September:
0.51" - Average rainfall in October:
0.24" - Average rainfall in November:
0.59" - Average rainfall in December:
0.71"
The wettest month (with the highest rainfall) is February (0.94").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days
Alpine, CA
- Average rainfall days in January:
5.1 days - Average rainfall days in February:
6.4 days - Average rainfall days in March:
7.6 days - Average rainfall days in April:
5.8 days - Average rainfall days in May:
4.2 days - Average rainfall days in June:
1.5 days
- Average rainfall days in July:
7.1 days - Average rainfall days in August:
6 days - Average rainfall days in September:
5.5 days - Average rainfall days in October:
3.4 days - Average rainfall days in November:
3.9 days - Average rainfall days in December:
5.5 days
The month with the highest number of rainy days is March (7.6 days).
The month with the least rainy days is June (1.5 days).
Average daylight / Average sunshine
Alpine, CA
- Average daylight in January:
10h and 18min - 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 54min - Average daylight in June:
14h and 18min
- Average daylight in July:
14h and 6min - Average daylight in August:
13h and 18min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 24min - Average daylight in November:
10h and 30min - 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 54min - Average sunshine in February:
6h and 54min - Average sunshine in March:
8h and 36min - Average sunshine in April:
11h and 12min - Average sunshine in May:
11h and 30min - 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:
10h and 24min - Average sunshine in October:
9h and 12min - Average sunshine in November:
7h and 18min - Average sunshine in December:
6h and 42min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days
Alpine, CA
- Average sunshine days in January:
24.3 days - Average sunshine days in February:
21.1 days - Average sunshine days in March:
22.2 days - Average sunshine days in April:
23.3 days - Average sunshine days in May:
25.2 days - Average sunshine days in June:
27.5 days
- Average sunshine days in July:
19.4 days - Average sunshine days in August:
21.5 days - Average sunshine days in September:
21.8 days - Average sunshine days in October:
26 days - Average sunshine days in November:
25.1 days - Average sunshine days in December:
24 days
The month with the most sunshine days is June (27.5 days).
The month with the least sunshine days is July (19.4 days).
Average UV index
Alpine, 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 November and December (UV index 3).
Average cloud cover
Alpine, CA
The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility
Alpine, 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).
