Climate and monthly weather forecastIsleton, CA
Climate and monthly weather forecast
Weather in January
January is a mild winter month in Isleton, California, with an average temperature ranging between max 55.9°F (13.3°C) and min 41.5°F (5.3°C). The weather during January records an average high-temperature of a refreshing 55.9°F (13.3°C), closely mirroring the preceding month. Weather in January »Weather in February
February, the last month of the winter in Isleton, is also a moderate month, with an average temperature varying between 59.7°F (15.4°C) and 42.3°F (5.7°C). February's arrival brings an average high-temperature of a still refreshing 59.7°F (15.4°C), slightly deviating from January's 55.9°F (13.3°C). Weather in February »Weather in March
March, the first month of the spring in Isleton, is a comfortable month, with an average temperature ranging between min 43.7°F (6.5°C) and max 63.7°F (17.6°C). March begins with an average high-temperature of a comfortable 63.7°F (17.6°C), reflecting close similarity to the preceding month. Weather in March »Weather in April
April in Isleton, California, is a pleasant spring month, with temperature in the range of an average low of 46.8°F (8.2°C) and an average high of 69.6°F (20.9°C). The embrace of April brings a minor uplift in the average high-temperature, shifting from an enjoyable 63.7°F (17.6°C) in March to a pleasant 69.6°F (20.9°C). Weather in April »Weather in May
The last month of the spring, May, is a moderately hot month in Isleton, California, with an average temperature fluctuating between 76.6°F (24.8°C) and 51.1°F (10.6°C). As May sets, the average high-temperature shows a slight increase, moving up from an agreeable 69.6°F (20.9°C) in April to a warm 76.6°F (24.8°C). Weather in May »Weather in June
The first month of the summer, June, is a tropical month in Isleton, California, with an average temperature fluctuating between 55.8°F (13.2°C) and 86.5°F (30.3°C). The onset of June brings a rise in the average high-temperature, elevating from a moderately hot 76.6°F (24.8°C) in May to a tropical 86.5°F (30.3°C). Weather in June »Weather in July
July, the same as June, in Isleton, California, is another hot summer month, with temperature in the range of an average high of 91°F (32.8°C) and an average low of 57.2°F (14°C). Isleton records the warmest temperatures in July, averaging a high of 91°F (32.8°C) and a low of 57.2°F (14°C). Throughout July, the heat index is calculated to be a fiery hot 96.8°F (36°C). Weather in July »Weather in August
August, the last month of the summer in Isleton, is another tropical month, with an average temperature varying between 57.7°F (14.3°C) and 90.1°F (32.3°C). August's onset records a minor alteration in the average high-temperature to a still tropical 90.1°F (32.3°C) from July's 91°F (32.8°C). Weather in August »Weather in September
The first month of the autumn, September, is still a hot month in Isleton, California, with an average temperature ranging between max 86.9°F (30.5°C) and min 58.1°F (14.5°C). The shift to September signals an average high-temperature of a still hot 86.9°F (30.5°C), subtly varied from August's 90.1°F (32.3°C). Weather in September »Weather in October
October, like September, in Isleton, California, is a moderately hot autumn month, with an average temperature fluctuating between 76.5°F (24.7°C) and 54.1°F (12.3°C). Transition from September to October is accompanied by a temperature drop, with average high-temperatures decreasing from a tropical 86.9°F (30.5°C) to a moderately hot 76.5°F (24.7°C). Weather in October »Weather in November
The last month of the autumn, November, is another comfortable month in Isleton, California, with temperature in the range of an average high of 63.9°F (17.7°C) and an average low of 46.4°F (8°C). November's arrival corresponds with a decrease in average high-temperatures, from October's warm 76.5°F (24.7°C) to a comfortable 63.9°F (17.7°C). Weather in November »Weather in December
The first month of the winter, December, is still a cool month in Isleton, California, with an average temperature fluctuating between 41.7°F (5.4°C) and 55°F (12.8°C). Isleton records the coldest temperatures in December, averaging a high of 55°F (12.8°C) and a low of 41.7°F (5.4°C). Weather in December »Updated: Feb 9, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January and March, with an average relative humidity of 74%, are most humid months in Isleton, California.
In Isleton, California, during the entire year, the rain falls for 68.7 days and collects up to 11.18" (284mm) of precipitation.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3.
The month with the most rainfall in Isleton is February, when the rain falls for 8.6 days and typically aggregates up to 2.17" (55mm) 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 has the longest days of the year, with an average of 14h and 48min of daylight.
June through August, with an average maximum UV index of 6, are months with the highest UV index in Isleton.
July is the month when Isleton experiences its warmest temperatures, averaging a high of 91°F (32.8°C) and a low of 57.2°F (14°C).
The month with the most sunshine is July, with an average of 12.1h of sunshine.
August is the only month when rain does not fall in Isleton, California.
With an average relative humidity of 49%, September is the least humid month in Isleton, California.
Months with rainfall are January through July, September through December.
With average high and low temperatures of 55°F (12.8°C) and 41.7°F (5.4°C) respectively, December is Isleton's coldest month.
With an average of 9h and 36min of daylight, December has the shortest days of the year in Isleton, California.
The month with the least sunshine is December, with an average of 5.9h of sunshine.
Average temperature
Isleton, CA
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is December (55°F).
The month with the highest average low temperature is September (58.1°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).
Average pressure
Isleton, 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:
29.96"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.92"Hg - Average pressure in October:
29.99"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 month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Isleton, CA
- Average wind speed in January:
4.8mph - Average wind speed in February:
6mph - Average wind speed in March:
6mph - Average wind speed in April:
6.6mph - Average wind speed in May:
7.3mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
7.5mph - Average wind speed in August:
7mph - Average wind speed in September:
5.9mph - Average wind speed in October:
5.7mph - Average wind speed in November:
4.7mph - Average wind speed in December:
5.3mph
The windiest month (with the highest average wind speed) is June (7.6mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).
Average humidity
Isleton, CA
The months with the highest relative humidity are January and March (74%).
The month with the lowest relative humidity is September (49%).
Average rainfall
Isleton, CA
- Average rainfall in January:
1.93" - Average rainfall in February:
2.17" - Average rainfall in March:
2.01" - Average rainfall in April:
0.79" - Average rainfall in May:
0.51" - Average rainfall in June:
0.08"
The wettest month (with the highest rainfall) is February (2.17").
The driest month (with the least rainfall) is August (0").
Average rainfall days
Isleton, CA
- Average rainfall days in January:
8.7 days - Average rainfall days in February:
8.6 days - Average rainfall days in March:
13 days - Average rainfall days in April:
7.7 days - Average rainfall days in May:
4.7 days - Average rainfall days in June:
1.5 days
- Average rainfall days in July:
0.8 days - Average rainfall days in August:
0.7 days - Average rainfall days in September:
1.6 days - Average rainfall days in October:
4.2 days - Average rainfall days in November:
7.5 days - Average rainfall days in December:
9.7 days
The month with the highest number of rainy days is March (13 days).
The month with the least rainy days is August (0.7 days).
Average daylight / Average sunshine
Isleton, CA
- Average daylight in January:
9h and 54min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 18min - Average daylight in June:
14h and 48min
- Average daylight in July:
14h and 30min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 36min
The month with the longest days is June (Average daylight: 14h and 48min).
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 12min - Average sunshine in March:
8h and 0min - Average sunshine in April:
10h and 18min - Average sunshine in May:
11h and 12min - Average sunshine in June:
11h and 48min
- Average sunshine in July:
12h and 6min - Average sunshine in August:
12h and 0min - Average sunshine in September:
11h and 12min - Average sunshine in October:
7h and 12min - Average sunshine in November:
6h and 36min - Average sunshine in December:
5h and 54min
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 54min).
Average sunshine days
Isleton, CA
- Average sunshine days in January:
21.1 days - Average sunshine days in February:
18.5 days - Average sunshine days in March:
17.3 days - Average sunshine days in April:
20.8 days - Average sunshine days in May:
25.8 days - Average sunshine days in June:
28.1 days
- Average sunshine days in July:
29.8 days - Average sunshine days in August:
29.9 days - Average sunshine days in September:
27.7 days - Average sunshine days in October:
25.9 days - Average sunshine days in November:
22 days - Average sunshine days in December:
20.5 days
The month with the most sunshine days is August (29.9 days).
The month with the least sunshine days is March (17.3 days).
Average UV index
Isleton, 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
Isleton, CA
The months with the most cloud cover are March and December (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility
Isleton, 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).
