Climate and monthly weather forecastLake Forest, CA
Climate and monthly weather forecast
Weather in January
January, like December, in Lake Forest, California, is another comfortable winter month, with temperature in the range of an average high of 65.1°F (18.4°C) and an average low of 50°F (10°C). Lake Forest observes a minor difference in average high-temperatures between December's 63.1°F (17.3°C) and January's 65.1°F (18.4°C). Weather in January »Weather in February
February, the last month of the winter in Lake Forest, is also an enjoyable month, with an average temperature ranging between min 48.7°F (9.3°C) and max 64.2°F (17.9°C). An average high-temperature of a still enjoyable 64.2°F (17.9°C) marks February, exhibiting a close resemblance to the conditions in January. Weather in February »Weather in March
The first month of the spring, March, is still a comfortable month in Lake Forest, California, with temperature in the range of an average high of 66.2°F (19°C) and an average low of 50.2°F (10.1°C). As March takes its course, Lake Forest's average high-temperature registers at a still comfortable 66.2°F (19°C), closely aligning with the preceding month. Weather in March »Weather in April
April in Lake Forest, California, is a pleasant spring month, with an average temperature ranging between min 52.5°F (11.4°C) and max 69.3°F (20.7°C). April notes an average high-temperature of a pleasant 69.3°F (20.7°C), subtly differing from March's 66.2°F (19°C). Weather in April »Weather in May
May, the last month of the spring in Lake Forest, is also an agreeable month, with an average temperature varying between 55.2°F (12.9°C) and 70.9°F (21.6°C). The shift from April to May is characterized by an average high-temperature of a still pleasant 70.9°F (21.6°C), not significantly different from the 69.3°F (20.7°C) of April. Weather in May »Weather in June
June, the first month of the summer in Lake Forest, is a moderately hot month, with temperature in the range of an average low of 57.7°F (14.3°C) and an average high of 75.4°F (24.1°C). Stepping into June, Lake Forest records an average high-temperature of a warm 75.4°F (24.1°C), almost consistent with May. Weather in June »Weather in July
July, the same as June, is another warm summer month in Lake Forest, California, with an average temperature varying between 63°F (17.2°C) and 80.4°F (26.9°C). Lake Forest's average high-temperature in July is a still moderately hot 80.4°F (26.9°C), indicating a subtle variation from June. Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Lake Forest, California, with an average temperature fluctuating between 82°F (27.8°C) and 64.4°F (18°C). August, characterized by an average high temperature of 82°F (27.8°C) and a low temperature of 64.4°F (18°C), is generally the warmest month. In August, the average heat index is appraised at 84.2°F (29°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Lake Forest, California, with an average temperature varying between 81°F (27.2°C) and 63.7°F (17.6°C). The shift into September uncovers an average high-temperature of a still moderately hot 81°F (27.2°C), subtly different from the previous month. Weather in September »Weather in October
October, the same as September, is another warm autumn month in Lake Forest, California, with an average temperature ranging between max 75.9°F (24.4°C) and min 59.9°F (15.5°C). The transition from September to October sees an average high-temperature of a still warm 75.9°F (24.4°C), indicating a minor variance from the prior month. Weather in October »Weather in November
The last month of the autumn, November, is another pleasant month in Lake Forest, California, with an average temperature ranging between min 54.7°F (12.6°C) and max 70°F (21.1°C). November's arrival aligns with a minor decrease in average high-temperatures, from October's moderately hot 75.9°F (24.4°C) to a pleasant 70°F (21.1°C). Weather in November »Weather in December
December, the first month of the winter in Lake Forest, is still a refreshing month, with an average temperature fluctuating between 63.1°F (17.3°C) and 49.5°F (9.7°C). Lake Forest reaches its lowest average temperatures in December, measuring 63.1°F (17.3°C) at the peak and 49.5°F (9.7°C) at the lowest. Weather in December »Updated: Aug 5, 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
In Lake Forest, California, during the entire year, the rain falls for 65.4 days and collects up to 9.17" (233mm) of precipitation.
January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index.
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 highest humidity are May and June, with an average relative humidity of 69%.
The month with the least rainfall is June, when the rain falls for 2 days and typically collects 0.08" (2mm) of precipitation.
With an average of 14h and 24min 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.
The months with the most sunshine are July and August, with an average of 12h of sunshine.
With average high and low temperatures of 82°F (27.8°C) and 64.4°F (18°C) respectively, August is Lake Forest's warmest month.
November is the least humid month, with an average relative humidity of 55%.
December is the month when Lake Forest experiences its coldest temperatures, averaging a high of 63.1°F (17.3°C) and a low of 49.5°F (9.7°C).
The month with the most rainfall is December, when the rain falls for 6.7 days and typically aggregates up to 1.85" (47mm) of precipitation.
December has the shortest days of the year, with an average of 10h and 0min of daylight.
The month with the least sunshine is December, with an average of 6.6h of sunshine.
Average temperature
Lake Forest, CA
The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (63.1°F).
The month with the highest average low temperature is August (64.4°F).
The coldest month (with the lowest average low temperature) is February (48.7°F).
Average pressure
Lake Forest, CA
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.05"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.88"Hg
- Average pressure in July:
29.91"Hg - Average pressure in August:
29.89"Hg - Average pressure in September:
29.88"Hg - Average pressure in October:
29.94"Hg - Average pressure in November:
30.02"Hg - Average pressure in December:
30.07"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.88"Hg).
Average wind speed
Lake Forest, CA
- Average wind speed in January:
5mph - Average wind speed in February:
5.1mph - Average wind speed in March:
5.2mph - Average wind speed in April:
5.7mph - Average wind speed in May:
5.7mph - Average wind speed in June:
5mph
- 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:
4.6mph - Average wind speed in November:
4.8mph - Average wind speed in December:
5mph
The windiest months (with the highest average wind speed) are April and May (5.7mph).
The calmest months (with the lowest average wind speed) are August and September (4.5mph).
Average humidity
Lake Forest, CA
The months with the highest relative humidity are May and June (69%).
The month with the lowest relative humidity is November (55%).
Average rainfall
Lake Forest, CA
- Average rainfall in January:
1.3" - Average rainfall in February:
1.42" - Average rainfall in March:
1.06" - Average rainfall in April:
0.59" - Average rainfall in May:
0.39" - Average rainfall in June:
0.08"
- Average rainfall in July:
0.47" - Average rainfall in August:
0.39" - Average rainfall in September:
0.31" - Average rainfall in October:
0.47" - Average rainfall in November:
0.83" - Average rainfall in December:
1.85"
The wettest month (with the highest rainfall) is December (1.85").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days
Lake Forest, CA
- Average rainfall days in January:
5.6 days - Average rainfall days in February:
6.4 days - Average rainfall days in March:
8.1 days - Average rainfall days in April:
7.2 days - Average rainfall days in May:
6.2 days - Average rainfall days in June:
2 days
- Average rainfall days in July:
5.3 days - Average rainfall days in August:
3.3 days - Average rainfall days in September:
4.6 days - Average rainfall days in October:
4.7 days - Average rainfall days in November:
5.3 days - Average rainfall days in December:
6.7 days
The month with the highest number of rainy days is March (8.1 days).
The month with the least rainy days is June (2 days).
Average daylight / Average sunshine
Lake Forest, CA
- Average daylight in January:
10h and 12min - 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 24min
- Average daylight in July:
14h and 6min - Average daylight in August:
13h and 24min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 24min - Average daylight in December:
10h and 0min
The month with the longest days is June (Average daylight: 14h and 24min).
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 42min - Average sunshine in March:
8h and 42min - Average sunshine in April:
10h and 54min - Average sunshine in May:
11h and 6min - Average sunshine in June:
11h and 54min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 36min - Average sunshine in October:
8h and 30min - Average sunshine in November:
7h and 6min - Average sunshine in December:
6h and 36min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days
Lake Forest, CA
- Average sunshine days in January:
24.2 days - Average sunshine days in February:
19.7 days - Average sunshine days in March:
21.1 days - Average sunshine days in April:
20.6 days - Average sunshine days in May:
19.3 days - Average sunshine days in June:
22.3 days
- Average sunshine days in July:
22.3 days - Average sunshine days in August:
23.8 days - Average sunshine days in September:
21.8 days - Average sunshine days in October:
24.2 days - Average sunshine days in November:
23.6 days - Average sunshine days in December:
22.5 days
The months with the most sunshine days are January and October (24.2 days).
The month with the least sunshine days is May (19.3 days).
Average UV index
Lake Forest, 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, March, November and December (UV index 4).
Average cloud cover
Lake Forest, CA
The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility
Lake Forest, 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).
