Climate and monthly weather forecastLa Mesa, CA
Climate and monthly weather forecast
Weather in January
January, like December, in La Mesa, California, is another enjoyable winter month, with an average temperature fluctuating between 66.2°F (19°C) and 49.6°F (9.8°C). At the start of January, La Mesa's average high-temperature reaches a still comfortable 66.2°F (19°C), subtly different from the preceding month. Weather in January »Weather in February
The last month of the winter, February, is also an enjoyable month in La Mesa, California, with an average temperature ranging between min 48.7°F (9.3°C) and max 64.9°F (18.3°C). The average high-temperature during February is a still enjoyable 64.9°F (18.3°C), almost matching the conditions of the preceding month. Weather in February »Weather in March
March, the first month of the spring in La Mesa, is still a refreshing month, with an average temperature varying between 66.9°F (19.4°C) and 50°F (10°C). La Mesa signifies an average high-temperature of a still refreshing 66.9°F (19.4°C) in March, closely mirroring the 64.9°F (18.3°C) of February. Weather in March »Weather in April
April is an agreeable spring month in La Mesa, California, with temperature in the range of an average low of 51.4°F (10.8°C) and an average high of 69.4°F (20.8°C). La Mesa, California, marks the onset of April with an average high-temperature of an agreeable 69.4°F (20.8°C), a subtle shift from March's 66.9°F (19.4°C). Weather in April »Weather in May
The last month of the spring, May, is another pleasant month in La Mesa, California, with an average temperature fluctuating between 54.3°F (12.4°C) and 70.9°F (21.6°C). As April transitions into May, the average high-temperature rests at a still pleasant 70.9°F (21.6°C), maintaining a close resemblance to the previous month. Weather in May »Weather in June
June, the first month of the summer in La Mesa, is a moderately hot month, with an average temperature varying between 75.7°F (24.3°C) and 58.3°F (14.6°C). La Mesa's weather, upon June's arrival, documents an average high-temperature of a moderately hot 75.7°F (24.3°C), nearly identical to the prior month. Weather in June »Weather in July
July, like June, in La Mesa, California, is a moderately hot summer month, with temperature in the range of an average high of 80.2°F (26.8°C) and an average low of 64°F (17.8°C). The transition into July notes an average high-temperature of a still moderately hot 80.2°F (26.8°C), revealing a mild distinction from the 75.7°F (24.3°C) in June. Weather in July »Weather in August
The last month of the summer, August, is another warm month in La Mesa, California, with an average temperature ranging between max 82.6°F (28.1°C) and min 65.8°F (18.8°C). August is the month when La Mesa experiences its warmest temperatures, averaging a high of 82.6°F (28.1°C) and a low of 65.8°F (18.8°C). August's heat index is appraised at a hot 86°F (30°C). Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in La Mesa, California, with temperature in the range of an average high of 81.5°F (27.5°C) and an average low of 64.4°F (18°C). La Mesa records an average high-temperature of a still warm 81.5°F (27.5°C) in September, closely mirroring the climate of the previous month. Weather in September »Weather in October
October, the same as September, is a moderately hot autumn month in La Mesa, California, with temperature in the range of an average high of 76.5°F (24.7°C) and an average low of 59.7°F (15.4°C). A minimal variation is noted in La Mesa's average high-temperature at the onset of October, reaching a still moderately hot 76.5°F (24.7°C) from September's 81.5°F (27.5°C). Weather in October »Weather in November
The last month of the autumn, November, is another pleasant month in La Mesa, California, with an average temperature ranging between min 54.5°F (12.5°C) and max 70.7°F (21.5°C). The onset of November results in a small decrease in the average high-temperature, moderately receding from a warm 76.5°F (24.7°C) in October to a pleasant 70.7°F (21.5°C). Weather in November »Weather in December
December, the first month of the winter in La Mesa, is also an enjoyable month, with temperature in the range of an average low of 49.1°F (9.5°C) and an average high of 64.2°F (17.9°C). December is La Mesa's coldest month, registering average high temperatures of 64.2°F (17.9°C) and lows of 49.1°F (9.5°C). Weather in December »Updated: Jun 12, 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 54.5 rainfall days, and 6.57" (167mm) of precipitation is accumulated.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 4.
The month with the most rainfall is February, when the rain falls for 6.4 days and typically aggregates up to 1.3" (33mm) 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 most humid month is May, with an average relative humidity of 68%.
The month with the least rainfall is June, when the rain falls for 1.4 days and typically collects 0.08" (2mm) of precipitation.
With an average of 14h and 18min of daylight, June has the longest days of the year.
The months with the highest UV index are June through September, with an average maximum UV index of 6.
With an average of 12h of sunshine, July has the most sunshine of the year in La Mesa.
La Mesa's warmest temperatures are experienced in August, with average high temperatures of 82.6°F (28.1°C) and lows of 65.8°F (18.8°C).
The least humid month is November, with an average relative humidity of 55%.
December stands out as La Mesa's coldest month, with temperatures ranging between an average high of 64.2°F (17.9°C) and a low of 49.1°F (9.5°C).
The month with the shortest days in La Mesa is December, 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
La Mesa, CA
The warmest month (with the highest average high temperature) is August (82.6°F).
The month with the lowest average high temperature is December (64.2°F).
The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (48.7°F).
Average pressure
La Mesa, CA
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.04"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
29.96"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:
29.88"Hg - Average pressure in September:
29.88"Hg - Average pressure in October:
29.93"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 (29.87"Hg).
Average wind speed
La Mesa, CA
- Average wind speed in January:
5mph - Average wind speed in February:
5.2mph - Average wind speed in March:
5.2mph - Average wind speed in April:
5.7mph - Average wind speed in May:
5.5mph - Average wind speed in June:
5mph
- Average wind speed in July:
4.9mph - Average wind speed in August:
4.7mph - Average wind speed in September:
4.7mph - Average wind speed in October:
4.5mph - Average wind speed in November:
4.8mph - Average wind speed in December:
5mph
The windiest month (with the highest average wind speed) is April (5.7mph).
The calmest month (with the lowest average wind speed) is October (4.5mph).
Average humidity
La Mesa, CA
The month with the highest relative humidity is May (68%).
The month with the lowest relative humidity is November (55%).
Average rainfall
La Mesa, CA
- Average rainfall in January:
0.71" - Average rainfall in February:
1.3" - Average rainfall in March:
0.71" - Average rainfall in April:
0.51" - Average rainfall in May:
0.39" - Average rainfall in June:
0.08"
- Average rainfall in July:
0.31" - Average rainfall in August:
0.28" - Average rainfall in September:
0.28" - Average rainfall in October:
0.16" - Average rainfall in November:
0.79" - Average rainfall in December:
1.06"
The wettest month (with the highest rainfall) is February (1.3").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days
La Mesa, CA
- Average rainfall days in January:
5.3 days - Average rainfall days in February:
6.4 days - Average rainfall days in March:
7.8 days - Average rainfall days in April:
6.4 days - Average rainfall days in May:
4.2 days - Average rainfall days in June:
1.4 days
- Average rainfall days in July:
4.4 days - Average rainfall days in August:
2.8 days - Average rainfall days in September:
3.7 days - Average rainfall days in October:
2.6 days - Average rainfall days in November:
3.8 days - Average rainfall days in December:
5.7 days
The month with the highest number of rainy days is March (7.8 days).
The month with the least rainy days is June (1.4 days).
Average daylight / Average sunshine
La Mesa, 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 48min - Average sunshine in February:
6h and 48min - Average sunshine in March:
8h and 36min - Average sunshine in April:
10h and 54min - Average sunshine in May:
10h and 48min - Average sunshine in June:
11h and 54min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
11h and 54min - Average sunshine in September:
10h and 18min - Average sunshine in October:
8h and 54min - Average sunshine in November:
7h and 6min - Average sunshine in December:
6h and 42min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days
La Mesa, CA
- Average sunshine days in January:
24.7 days - Average sunshine days in February:
21 days - Average sunshine days in March:
22.3 days - Average sunshine days in April:
23.3 days - Average sunshine days in May:
24.5 days - Average sunshine days in June:
28.1 days
- Average sunshine days in July:
24.7 days - Average sunshine days in August:
25.7 days - Average sunshine days in September:
24.6 days - Average sunshine days in October:
27 days - Average sunshine days in November:
25 days - Average sunshine days in December:
23.7 days
The month with the most sunshine days is June (28.1 days).
The month with the least sunshine days is February (21 days).
Average UV index
La Mesa, 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 January, February, November and December (UV index 4).
Average cloud cover
La Mesa, CA
The month with the most cloud cover is March (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 8).
Average visibility
La Mesa, 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).
