Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January is a moderate winter month in Thornton, California, with an average temperature varying between 41.2°F (5.1°C) and 56.7°F (13.7°C). In January, the average high-temperature is essentially the same as in December - a mild 56.7°F (13.7°C). Weather in January »
Weather in February
The last month of the winter, February, is another mild month in Thornton, California, with temperature in the range of an average high of 59.7°F (15.4°C) and an average low of 41.5°F (5.3°C). In Thornton, California, the average high-temperature in February is essentially the same as in January - a still mild 59.7°F (15.4°C). Weather in February »
Weather in March
March, the first month of the spring in Thornton, is a comfortable month, with an average temperature ranging between min 43.3°F (6.3°C) and max 63.5°F (17.5°C). In March, the average high-temperature is relatively the same as in February - a comfortable 63.5°F (17.5°C). Weather in March »
Weather in April
April is an agreeable spring month in Thornton, California, with temperature in the range of an average low of 46.2°F (7.9°C) and an average high of 69.8°F (21°C). In April, the average high-temperature slightly increases from a comfortable 63.5°F (17.5°C) in March to an agreeable 69.8°F (21°C). Weather in April »
Weather in May
The last month of the spring, May, is a moderately hot month in Thornton, California, with temperature in the range of an average low of 51.1°F (10.6°C) and an average high of 77.7°F (25.4°C). In Thornton, the average high-temperature in May slightly increases from a pleasant 69.8°F (21°C) in April to a moderately hot 77.7°F (25.4°C). Weather in May »
Weather in June
June, the first month of the summer in Thornton, is a hot month, with temperature in the range of an average high of 88.2°F (31.2°C) and an average low of 56.7°F (13.7°C). In Thornton, the average high-temperature in June rises from a moderately hot 77.7°F (25.4°C) in May to a hot 88.2°F (31.2°C). Weather in June »
Weather in July
July, like June, is another tropical summer month in Thornton, California, with an average temperature fluctuating between 58.6°F (14.8°C) and 93.9°F (34.4°C). The warmest month is July, with an average high-temperature of 93.9°F (34.4°C) and an average low-temperature of 58.6°F (14.8°C). In July, the average heat index is calculated to be a very hot 100.4°F (38°C). Weather in July »
Weather in August
August, the last month of the summer in Thornton, is also a hot month, with an average temperature varying between 93°F (33.9°C) and 58.8°F (14.9°C). In August, the average high-temperature is essentially the same as in July - a still hot 93°F (33.9°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a tropical month in Thornton, California, with temperature in the range of an average low of 58.6°F (14.8°C) and an average high of 88.5°F (31.4°C). In September, the average high-temperature is practically the same as in August - a still hot 88.5°F (31.4°C). Weather in September »
Weather in October
October, like September, in Thornton, California, is a moderately hot autumn month, with an average temperature fluctuating between 76.8°F (24.9°C) and 53.6°F (12°C). In October, the average high-temperature drops from a tropical 88.5°F (31.4°C) in September to a moderately hot 76.8°F (24.9°C). Weather in October »
Weather in November
November, the last month of the autumn in Thornton, is also an enjoyable month, with an average temperature ranging between max 64°F (17.8°C) and min 45.7°F (7.6°C). In November, the average high-temperature decreases from a moderately hot 76.8°F (24.9°C) in October to an enjoyable 64°F (17.8°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cool month in Thornton, California, with an average temperature ranging between min 41°F (5°C) and max 55°F (12.8°C). With an average high-temperature of 55°F (12.8°C) and an average low-temperature of 41°F (5°C), December is the coldest month. Weather in December »
[Resources]FAQ
How much does it rain in Thornton?
Throughout the year, in Thornton, California, there are 63.8 rainfall days, and 12.6" (320mm) of precipitation is accumulated.
When it does not snow in Thornton?
In Thornton, California, snow does not fall in January through November.
How many days does it snow in Thornton?
In Thornton, California, during the entire year, snow falls for 0.1 days.
What is the month with the lowest UV index in Thornton?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3.
What is the wettest month in Thornton?
February is the month with the most rainfall. Rain falls for 8 days and accumulates 2.4" (61mm) of precipitation.
What is the most humid month in Thornton?
With an average relative humidity of 75%, March is the most humid month.
When is Daylight Saving Time (DST) in Thornton?
On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from PDT to PST.
When are the longest days in Thornton?
The month with the longest days in Thornton, California, is June, with an average of 14h and 47min of daylight.
When is the highest UV index in Thornton?
June is the month with the highest UV index, with an average maximum UV index of 7.
What is the warmest month in Thornton?
With an average high-temperature of 93.9°F (34.4°C) and an average low-temperature of 58.6°F (14.8°C), July is the warmest month in Thornton, California.
What is the least humid month in Thornton?
July is the least humid month in Thornton, California, with an average relative humidity of 45%.
What is the driest month in Thornton?
July and August are months with the least rain in Thornton when the rain falls for 1.4 days and typically aggregates up to 0.04" (1mm) of rain.
What month has the most sunshine in Thornton?
The month with the most sunshine in Thornton is July, with an average of 12.1h of sunshine.
What is the coldest month in Thornton?
The coldest month in Thornton, California, is December, with an average high-temperature of 55°F (12.8°C) and an average low-temperature of 41°F (5°C).
When does it snow in Thornton?
The only month with snowfall in Thornton is December.
What is the snowiest month in Thornton?
December has the most snowfall days of the year. Snow falls for 0.1 days.
What is the month with the shortest days in Thornton?
The month with the shortest days is December, with an average of 9h and 34min of daylight.
What is the month with the least sunshine in Thornton?
The month with the least sunshine in Thornton, California, is December, with an average of 5.9h of sunshine.
Average temperature
Thornton, CA
The warmest month (with the highest average high temperature) is July (93.9°F).
The month with the lowest average high temperature is December (55°F).
The month with the highest average low temperature is August (58.8°F).
The coldest month (with the lowest average low temperature) is December (41°F).
Average pressure
Thornton, CA
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
30.02"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:
30.08"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Thornton, CA
- Average wind speed in January:
4.8mph - Average wind speed in February:
5.8mph - Average wind speed in March:
5.5mph - Average wind speed in April:
5.5mph - Average wind speed in May:
5.7mph - Average wind speed in June:
5.8mph
- Average wind speed in July:
5.6mph - Average wind speed in August:
5.2mph - Average wind speed in September:
4.6mph - Average wind speed in October:
4.7mph - Average wind speed in November:
4.4mph - Average wind speed in December:
5.2mph
The windiest months (with the highest average wind speed) are February and June (5.8mph).
The calmest month (with the lowest average wind speed) is November (4.4mph).
Average humidity
Thornton, CA
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (45%).
Average rainfall
Thornton, CA
- Average rainfall in January:
2.01" - Average rainfall in February:
2.4" - Average rainfall in March:
2.28" - Average rainfall in April:
0.98" - Average rainfall in May:
0.71" - Average rainfall in June:
0.12"
- Average rainfall in July:
0.04" - Average rainfall in August:
0.04" - Average rainfall in September:
0.08" - Average rainfall in October:
0.59" - Average rainfall in November:
1.38" - Average rainfall in December:
1.97"
The wettest month (with the highest rainfall) is February (2.4").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days
Thornton, CA
- Average rainfall days in January:
8.5 days - Average rainfall days in February:
8 days - Average rainfall days in March:
12.4 days - Average rainfall days in April:
7.8 days - Average rainfall days in May:
4.8 days - Average rainfall days in June:
0.9 days
- Average rainfall days in July:
1.4 days - Average rainfall days in August:
1.2 days - Average rainfall days in September:
1.5 days - Average rainfall days in October:
3.2 days - Average rainfall days in November:
5.9 days - Average rainfall days in December:
8.2 days
The month with the highest number of rainy days is March (12.4 days).
The month with the least rainy days is June (0.9 days).
Average snowfall days
Thornton, CA
- Average snowfall days in January:
0 days - Average snowfall days in February:
0 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:
0.1 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Thornton, CA
- Average daylight in January:
9h and 52min - Average daylight in February:
10h and 48min - Average daylight in March:
11h and 59min - Average daylight in April:
13h and 13min - Average daylight in May:
14h and 16min - Average daylight in June:
14h and 47min
- Average daylight in July:
14h and 31min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 25min - Average daylight in October:
11h and 11min - Average daylight in November:
10h and 7min - Average daylight in December:
9h and 34min
The month with the longest days is June (Average daylight: 14h and 47min).
The month with the shortest days is December (Average daylight: 9h and 34min).
- Average sunshine in January:
6h and 6min - Average sunshine in February:
6h and 18min - Average sunshine in March:
8h and 0min - Average sunshine in April:
10h and 12min - 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 18min - Average sunshine in October:
7h and 12min - Average sunshine in November:
6h and 42min - 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
Thornton, CA
- Average sunshine days in January:
21.8 days - Average sunshine days in February:
19.3 days - Average sunshine days in March:
17.8 days - Average sunshine days in April:
21.7 days - Average sunshine days in May:
25.5 days - Average sunshine days in June:
28.5 days
- Average sunshine days in July:
28.9 days - Average sunshine days in August:
29.3 days - Average sunshine days in September:
27.5 days - Average sunshine days in October:
27.1 days - Average sunshine days in November:
23.7 days - Average sunshine days in December:
21.8 days
The month with the most sunshine days is August (29.3 days).
The month with the least sunshine days is March (17.8 days).
Average UV index
Thornton, CA
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover
Thornton, CA
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility
Thornton, 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).
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