Climate and monthly weather forecastTustin, CA
Climate and monthly weather forecast
Weather in January
January, like December, in Tustin, California, is another refreshing winter month, with temperature in the range of an average high of 65.5°F (18.6°C) and an average low of 52°F (11.1°C). Tustin's average high-temperature in January is a still comfortable 65.5°F (18.6°C), marking an insignificant difference from the 63.1°F (17.3°C) of December. Weather in January »Weather in February
The last month of the winter, February, is another comfortable month in Tustin, California, with an average temperature ranging between min 50.7°F (10.4°C) and max 64°F (17.8°C). Tustin experiences an average high-temperature of a still refreshing 64°F (17.8°C) in February, marking an insignificant shift from 65.5°F (18.6°C) in January. Weather in February »Weather in March
March, the first month of the spring in Tustin, is still a comfortable month, with an average temperature fluctuating between 66.2°F (19°C) and 52°F (11.1°C). In March, Tustin experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 64°F (17.8°C) in February to a still comfortable 66.2°F (19°C). Weather in March »Weather in April
April in Tustin, California, is an agreeable spring month, with an average temperature varying between 54.1°F (12.3°C) and 68.7°F (20.4°C). Tustin observes an average high-temperature of an agreeable 68.7°F (20.4°C) in April, barely different from 66.2°F (19°C) in March. Weather in April »Weather in May
The last month of the spring, May, is also an agreeable month in Tustin, California, with an average temperature ranging between max 70.3°F (21.3°C) and min 56.7°F (13.7°C). May denotes a minimal variation in the average high-temperature to a still pleasant 70.3°F (21.3°C) from April's 68.7°F (20.4°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Tustin, California, with an average temperature ranging between min 58.6°F (14.8°C) and max 74.5°F (23.6°C). June experiences an average high-temperature of a warm 74.5°F (23.6°C), barely different from May's 70.3°F (21.3°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Tustin, California, with an average temperature varying between 63.5°F (17.5°C) and 79°F (26.1°C). The onset of July notes an average high-temperature of a still warm 79°F (26.1°C), subtly shifted from June's 74.5°F (23.6°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Tustin, California, with an average temperature varying between 65.1°F (18.4°C) and 80.2°F (26.8°C). August proves to be the warmest month, recording an average peak temperature of 80.2°F (26.8°C) and a minimum temperature of 65.1°F (18.4°C). Weather in August »Weather in September
September, the first month of the autumn in Tustin, is also a moderately hot month, with an average temperature ranging between min 64.4°F (18°C) and max 79.7°F (26.5°C). As September takes its course, Tustin's average high-temperature registers at a still warm 79.7°F (26.5°C), closely aligning with the preceding month. Weather in September »Weather in October
October, like September, in Tustin, California, is another warm autumn month, with an average temperature ranging between max 75°F (23.9°C) and min 61.5°F (16.4°C). The advent of October brings an average high-temperature of a still moderately hot 75°F (23.9°C), exhibiting minor difference from the previous month. Weather in October »Weather in November
November, the last month of the autumn in Tustin, is another pleasant month, with an average temperature ranging between min 56.5°F (13.6°C) and max 70°F (21.1°C). The advent of November observes an average high-temperature of a pleasant 70°F (21.1°C), nearly identical to October's 75°F (23.9°C). Weather in November »Weather in December
December, the first month of the winter in Tustin, is still a refreshing month, with an average temperature fluctuating between 51.3°F (10.7°C) and 63.1°F (17.3°C). December is the coldest month of the year, registering average temperatures as high as 63.1°F (17.3°C) and as low as 51.3°F (10.7°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
In Tustin, California, during the entire year, the rain falls for 51.9 days and collects up to 4.13" (105mm) of precipitation.
January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Tustin.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Tustin, California, 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 June, with an average relative humidity of 70%.
June is the month with the least rainfall in Tustin. Rain falls for 1.3 days and accumulates 0.04" (1mm) of precipitation.
June has the longest days of the year, with an average of 14h and 24min of daylight.
June through September, with an average maximum UV index of 6, are months with the highest UV index in Tustin.
July and August, with an average of 12h of sunshine, are months with the most sunshine in Tustin, California.
The month of August sees the average highest temperatures, reaching 80.2°F (26.8°C) at the peak and 65.1°F (18.4°C) at the low.
The least humid month is November, with an average relative humidity of 55%.
In Tustin, December is known for its average lowest temperatures, reaching a high of 63.1°F (17.3°C) and a low of 51.3°F (10.7°C).
December is the month with the most rainfall. Rain falls for 6.5 days and accumulates 0.87" (22mm) of precipitation.
December has the shortest days of the year in Tustin, with an average of 10h and 0min of daylight.
December has the least sunshine of the year, with an average of 6.7h of sunshine.
Average temperature
Tustin, CA
The warmest month (with the highest average high temperature) is August (80.2°F).
The month with the lowest average high temperature is December (63.1°F).
The month with the highest average low temperature is August (65.1°F).
The coldest month (with the lowest average low temperature) is February (50.7°F).
Average pressure
Tustin, CA
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.05"Hg - Average pressure in March:
30.03"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:
29.89"Hg - Average pressure in October:
29.94"Hg - Average pressure in November:
30.03"Hg - Average pressure in December:
30.07"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
Tustin, CA
- Average wind speed in January:
5.2mph - Average wind speed in February:
5.3mph - Average wind speed in March:
5.5mph - Average wind speed in April:
6mph - Average wind speed in May:
6mph - Average wind speed in June:
5.3mph
- Average wind speed in July:
5.1mph - Average wind speed in August:
4.8mph - Average wind speed in September:
4.8mph - Average wind speed in October:
4.8mph - Average wind speed in November:
5.1mph - Average wind speed in December:
5.2mph
The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest months (with the lowest average wind speed) are August, September and October (4.8mph).
Average humidity
Tustin, CA
The month with the highest relative humidity is June (70%).
The month with the lowest relative humidity is November (55%).
Average rainfall
Tustin, CA
- Average rainfall in January:
0.43" - Average rainfall in February:
0.59" - Average rainfall in March:
0.47" - Average rainfall in April:
0.35" - Average rainfall in May:
0.16" - Average rainfall in June:
0.04"
The wettest month (with the highest rainfall) is December (0.87").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days
Tustin, CA
- Average rainfall days in January:
4.3 days - Average rainfall days in February:
5.8 days - Average rainfall days in March:
6.7 days - Average rainfall days in April:
5.6 days - Average rainfall days in May:
4 days - Average rainfall days in June:
1.3 days
- Average rainfall days in July:
4.3 days - Average rainfall days in August:
2.6 days - Average rainfall days in September:
3.1 days - Average rainfall days in October:
3.6 days - Average rainfall days in November:
4.1 days - Average rainfall days in December:
6.5 days
The month with the highest number of rainy days is March (6.7 days).
The month with the least rainy days is June (1.3 days).
Average daylight / Average sunshine
Tustin, 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 48min - Average sunshine in March:
8h and 42min - Average sunshine in April:
11h and 0min - Average sunshine in May:
11h and 12min - Average sunshine in June:
11h and 48min
- 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 42min
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 42min).
Average sunshine days
Tustin, CA
- Average sunshine days in January:
25.6 days - Average sunshine days in February:
20.3 days - Average sunshine days in March:
22.4 days - Average sunshine days in April:
21.7 days - Average sunshine days in May:
22.8 days - Average sunshine days in June:
26.9 days
- Average sunshine days in July:
24.3 days - Average sunshine days in August:
25.7 days - Average sunshine days in September:
24.1 days - Average sunshine days in October:
25.2 days - Average sunshine days in November:
24 days - Average sunshine days in December:
23 days
The month with the most sunshine days is June (26.9 days).
The month with the least sunshine days is February (20.3 days).
Average UV index
Tustin, 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
Tustin, 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
Tustin, 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).
