Climate and monthly weather forecastPorterville, CA
Climate and monthly weather forecast
Weather in January
January, like December, is another mild winter month in Porterville, California, with an average temperature fluctuating between 41.5°F (5.3°C) and 59.9°F (15.5°C). In the transition from December to January, Porterville reports an average high-temperature of a still refreshing 59.9°F (15.5°C), indicating a close resemblance to the prior month. Weather in January »Weather in February
The last month of the winter, February, is a comfortable month in Porterville, California, with an average temperature fluctuating between 61°F (16.1°C) and 41.7°F (5.4°C). The transition from January to February sees average high-temperatures adjusting to a comfortable 61°F (16.1°C), from a not significantly different 59.9°F (15.5°C). Weather in February »Weather in March
The first month of the spring, March, is still a refreshing month in Porterville, California, with an average temperature ranging between max 65.7°F (18.7°C) and min 44.2°F (6.8°C). March ushers in an average high-temperature of a still enjoyable 65.7°F (18.7°C), aligning closely with the preceding month. Weather in March »Weather in April
April in Porterville, California, is a pleasant spring month, with an average temperature ranging between min 48.6°F (9.2°C) and max 71.4°F (21.9°C). The shift into April is marked by a modest rise in the average high-temperature, moving from March's enjoyable 65.7°F (18.7°C) to a pleasant 71.4°F (21.9°C). Weather in April »Weather in May
The last month of the spring, May, is a moderately hot month in Porterville, California, with an average temperature ranging between min 54.1°F (12.3°C) and max 79.2°F (26.2°C). The shift from April to May introduces a subtle increase in the average high-temperature, moving from a pleasant 71.4°F (21.9°C) to a moderately hot 79.2°F (26.2°C). Weather in May »Weather in June
The first month of the summer, June, is a tropical month in Porterville, California, with an average temperature ranging between max 90.5°F (32.5°C) and min 60.8°F (16°C). June shows a rise in the average high-temperature, moving from May's moderately hot 79.2°F (26.2°C) to a hot 90.5°F (32.5°C). Weather in June »Weather in July
July in Porterville, California, is a fiery hot summer month, with temperature in the range of an average low of 65.1°F (18.4°C) and an average high of 97.7°F (36.5°C). With average high temperatures of 97.7°F (36.5°C) and lows of 65.1°F (18.4°C), July is the warmest month. Weather in July »Weather in August
The last month of the summer, August, is another torrid month in Porterville, California, with an average temperature varying between 64.8°F (18.2°C) and 96.8°F (36°C). As Porterville welcomes August, the average high-temperature stabilizes at a still sweltering 96.8°F (36°C), showing little deviation from July's 97.7°F (36.5°C). Weather in August »Weather in September
September, the first month of the autumn in Porterville, is still a tropical month, with temperature in the range of an average high of 90.7°F (32.6°C) and an average low of 61.9°F (16.6°C). The transition into September involves a small decrease in the average high-temperature, dipping slightly from a fiery hot 96.8°F (36°C) in August to a hot 90.7°F (32.6°C). Weather in September »Weather in October
October, like September, in Porterville, California, is a moderately hot autumn month, with an average temperature varying between 54.1°F (12.3°C) and 78.1°F (25.6°C). October implies a gentle temperature shift, with average high-temperatures reducing from September's hot 90.7°F (32.6°C) to a warm 78.1°F (25.6°C). Weather in October »Weather in November
November, the last month of the autumn in Porterville, is also an enjoyable month, with temperature in the range of an average low of 46.6°F (8.1°C) and an average high of 67.1°F (19.5°C). Porterville's November weather comes with a decrease in average high-temperatures, moving from a warm 78.1°F (25.6°C) in October to a refreshing 67.1°F (19.5°C). Weather in November »Weather in December
The first month of the winter, December, is also a moderate month in Porterville, California, with temperature in the range of an average high of 57.6°F (14.2°C) and an average low of 40.3°F (4.6°C). The month of December, characterized by an average high of 57.6°F (14.2°C) and a low of 40.3°F (4.6°C), is recognized as the coldest. Weather in December »Updated: Aug 26, 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 most humid month is January, with an average relative humidity of 64%.
In Porterville, during the entire year, the rain falls for 52.3 days and collects up to 9.37" (238mm) of precipitation.
January, March through December are months without snowfall.
In Porterville, during the entire year, snow falls for 0.2 days.
January, November and December, with an average maximum UV index of 3, are months with the lowest UV index.
February is the only month when snow falls.
The month with the most snowfall days is February, when snow falls for 0.2 days.
March is the month with the most rainfall. Rain falls for 9.3 days and accumulates 1.93" (49mm) 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.
The months with the least rainfall are June and August Rain falls for 1 days and accumulates 0.04" (1mm) of rain.
With an average of 14h and 36min of daylight, June has the longest days of the year.
The months with the most sunshine are June and July, with an average of 12.2h of sunshine.
June through August, with an average maximum UV index of 7, are months with the highest UV index.
In Porterville, July is known for its average highest temperatures, reaching a high of 97.7°F (36.5°C) and a low of 65.1°F (18.4°C).
August is the least humid month, with an average relative humidity of 30%.
December tends to be the coldest month, with temperatures averaging a daily high of 57.6°F (14.2°C) and a low of 40.3°F (4.6°C).
The month with the shortest days is December, with an average of 9h and 48min of daylight.
The month with the least sunshine is December, with an average of 6.8h of sunshine.
Average temperature
Porterville, CA
The warmest month (with the highest average high temperature) is July (97.7°F).
The month with the lowest average high temperature is December (57.6°F).
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is December (40.3°F).
Average pressure
Porterville, CA
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30.04"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.87"Hg
- Average pressure in July:
29.9"Hg - Average pressure in August:
29.9"Hg - Average pressure in September:
29.91"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.06"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 (29.87"Hg).
Average wind speed
Porterville, CA
- Average wind speed in January:
3.9mph - Average wind speed in February:
4.3mph - Average wind speed in March:
4.7mph - Average wind speed in April:
5mph - Average wind speed in May:
5.1mph - Average wind speed in June:
5.2mph
- Average wind speed in July:
4.8mph - Average wind speed in August:
4.5mph - Average wind speed in September:
4.5mph - Average wind speed in October:
4.1mph - Average wind speed in November:
3.8mph - Average wind speed in December:
3.6mph
The windiest month (with the highest average wind speed) is June (5.2mph).
The calmest month (with the lowest average wind speed) is December (3.6mph).
Average humidity
Porterville, CA
The month with the highest relative humidity is January (64%).
The month with the lowest relative humidity is August (30%).
Average rainfall
Porterville, CA
- Average rainfall in January:
1.42" - Average rainfall in February:
1.5" - Average rainfall in March:
1.93" - Average rainfall in April:
0.94" - Average rainfall in May:
0.55" - Average rainfall in June:
0.04"
- Average rainfall in July:
0.08" - Average rainfall in August:
0.04" - Average rainfall in September:
0.12" - Average rainfall in October:
0.31" - Average rainfall in November:
0.83" - Average rainfall in December:
1.61"
The wettest month (with the highest rainfall) is March (1.93").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days
Porterville, CA
- Average rainfall days in January:
6.5 days - Average rainfall days in February:
6.8 days - Average rainfall days in March:
9.3 days - Average rainfall days in April:
7.2 days - Average rainfall days in May:
3.5 days - Average rainfall days in June:
1 days
- Average rainfall days in July:
1.9 days - Average rainfall days in August:
0.5 days - Average rainfall days in September:
1.5 days - Average rainfall days in October:
2.8 days - Average rainfall days in November:
4.5 days - Average rainfall days in December:
6.8 days
The month with the highest number of rainy days is March (9.3 days).
The month with the least rainy days is August (0.5 days).
Average snowfall days
Porterville, CA
- Average snowfall days in January:
0 days - Average snowfall days in February:
0.2 days - Average snowfall days in March:
0 days - Average snowfall days in April:
0 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:
0 days - Average snowfall days in December:
0 days
The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight / Average sunshine
Porterville, CA
- Average daylight in January:
10h and 0min - 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 36min
- 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 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January:
6h and 54min - Average sunshine in February:
6h and 54min - Average sunshine in March:
9h and 0min - Average sunshine in April:
11h and 0min - Average sunshine in May:
11h and 42min - Average sunshine in June:
12h and 12min
- Average sunshine in July:
12h and 12min - Average sunshine in August:
12h and 0min - Average sunshine in September:
11h and 0min - Average sunshine in October:
8h and 18min - Average sunshine in November:
7h and 18min - Average sunshine in December:
6h and 48min
The months with the most sunshine are June and July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days
Porterville, CA
- Average sunshine days in January:
23.1 days - Average sunshine days in February:
20.3 days - Average sunshine days in March:
21.2 days - Average sunshine days in April:
22.9 days - Average sunshine days in May:
26.8 days - Average sunshine days in June:
28.4 days
- Average sunshine days in July:
28.1 days - Average sunshine days in August:
28.8 days - Average sunshine days in September:
27.7 days - Average sunshine days in October:
27.1 days - Average sunshine days in November:
25 days - Average sunshine days in December:
23.1 days
The month with the most sunshine days is August (28.8 days).
The month with the least sunshine days is February (20.3 days).
Average UV index
Porterville, CA
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover
Porterville, CA
The month with the most cloud cover is March (Cloud cover 24).
The months with the least cloud cover are July and August (Cloud cover 4).
Average visibility
Porterville, 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).
