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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
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, in Sunnyvale, Texas, is a cool winter month, with an average temperature fluctuating between 38.8°F (3.8°C) and 54.3°F (12.4°C). Sunnyvale's coldest month, January, registers temperatures that range from a high of 54.3°F (12.4°C) to a low of 38.8°F (3.8°C). Weather in January »
Weather in February
The last month of the winter, February, is a moderate month in Sunnyvale, Texas, with an average temperature ranging between min 42.3°F (5.7°C) and max 57.7°F (14.3°C). The ushering in of February brings an average high-temperature of a refreshing 57.7°F (14.3°C), closely mirroring the 54.3°F (12.4°C) of January. Weather in February »
Weather in March
March, the first month of the spring in Sunnyvale, is a comfortable month, with temperature in the range of an average high of 66.7°F (19.3°C) and an average low of 50°F (10°C). The shift into March brings an increase in the average high-temperature, moving from a refreshing 57.7°F (14.3°C) in February to an enjoyable 66.7°F (19.3°C). Weather in March »
Weather in April
April is a moderately hot spring month in Sunnyvale, Texas, with temperature in the range of an average high of 74.5°F (23.6°C) and an average low of 55.9°F (13.3°C). The arrival of April witnesses a small shift in the average high-temperature, moving from an enjoyable 66.7°F (19.3°C) in March to a warm 74.5°F (23.6°C). Weather in April »
Weather in May
May, the last month of the spring in Sunnyvale, is another warm month, with an average temperature fluctuating between 64°F (17.8°C) and 81.1°F (27.3°C). The shift from April to May sees a slight increase in the average high-temperature, transitioning from a moderately hot 74.5°F (23.6°C) to a still warm 81.1°F (27.3°C). Weather in May »
Weather in June
June, the first month of the summer in Sunnyvale, is a tropical month, with an average temperature fluctuating between 73°F (22.8°C) and 90.7°F (32.6°C). As Sunnyvale enters June, the average high-temperature increases from the a warm 81.1°F (27.3°C) of May to a hot 90.7°F (32.6°C). Weather in June »
Weather in July
July, the same as June, in Sunnyvale, Texas, is another tropical summer month, with an average temperature fluctuating between 75.7°F (24.3°C) and 94.6°F (34.8°C). Sunnyvale notes an average high-temperature of a still hot 94.6°F (34.8°C) in July, displaying minor variation from June. Weather in July »
Weather in August
The last month of the summer, August, is a very hot month in Sunnyvale, Texas, with an average temperature varying between 95.5°F (35.3°C) and 75.7°F (24.3°C). Sunnyvale's August weather, marked by an average high temperature of 95.5°F (35.3°C) and an average low temperature of 75.7°F (24.3°C), is the warmest in the year. The average heat index in August is estimated at a life-threatening hot 113°F (45°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a tropical month in Sunnyvale, Texas, with an average temperature fluctuating between 69.6°F (20.9°C) and 87.6°F (30.9°C). September's arrival subtly correlates with a reduction in the average high-temperature, down from a sweltering 95.5°F (35.3°C) in August to a tropical 87.6°F (30.9°C). Weather in September »
Weather in October
October, like September, in Sunnyvale, Texas, is a moderately hot autumn month, with an average temperature varying between 76.1°F (24.5°C) and 58.3°F (14.6°C). As September shifts into October, a slight alteration in temperatures is observed, with average highs reducing from a hot 87.6°F (30.9°C) to a moderately hot 76.1°F (24.5°C). Weather in October »
Weather in November
November, the last month of the autumn in Sunnyvale, is another comfortable month, with an average temperature varying between 48.6°F (9.2°C) and 64°F (17.8°C). November's onset brings a reduction in the average high-temperature, from a moderately hot 76.1°F (24.5°C) in October to a comfortable 64°F (17.8°C). Weather in November »
Weather in December
December, the first month of the winter in Sunnyvale, is also a moderate month, with an average temperature fluctuating between 41.7°F (5.4°C) and 55.8°F (13.2°C). Sunnyvale records a mild change in average high-temperature during December, easing from a refreshing 64°F (17.8°C) in November to a moderate 55.8°F (13.2°C). Weather in December »
[Resources]Frequently asked questions
What month is the coldest in Sunnyvale?
In Sunnyvale, January is known for its average lowest temperatures, reaching a high of 54.3°F (12.4°C) and a low of 38.8°F (3.8°C).
How many days does it rain in Sunnyvale?
Throughout the year, there are 149.6 rainfall days, and 33.35" (847mm) of precipitation is accumulated.
When does it snow in Sunnyvale?
Months with snowfall are January and February.
How much does it snow in Sunnyvale?
Throughout the year, in Sunnyvale, there are 2 snowfall days, and 0.87" (22mm) of snow is accumulated.
What is the month with the lowest UV index in Sunnyvale?
January and December, with an average maximum UV index of 3, are months with the lowest UV index in Sunnyvale, Texas.
What is the driest month in Sunnyvale?
The month with the least rainfall in Sunnyvale, Texas, is February, when the rain falls for 10.9 days and typically collects 1.85" (47mm) of precipitation.
When does it snow the most in Sunnyvale?
The month with the most snowfall is February, when snow falls for 1.2 days and typically aggregates up to 0.67" (17mm) of snow.
When it does not snow in Sunnyvale?
March through December are months without snowfall.
When is Daylight Saving Time (DST) in Sunnyvale?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
What is the most humid month in Sunnyvale?
With an average relative humidity of 75%, May is the most humid month in Sunnyvale, Texas.
When are the longest days in Sunnyvale?
The month with the longest days is June, with an average of 14h and 18min of daylight.
When is the highest UV index in Sunnyvale?
The months with the highest UV index in Sunnyvale, Texas, are June through August, with an average maximum UV index of 7.
What are the warmest months in Sunnyvale?
The warmest period tends to be August, when average temperatures fluctuate between a high of 95.5°F (35.3°C) and a low of 75.7°F (24.3°C).
What is the least humid month in Sunnyvale?
With an average relative humidity of 58%, August is the least humid month in Sunnyvale.
What month has the most sunshine in Sunnyvale?
August has the most sunshine of the year, with an average of 11.1h of sunshine.
What is the rainiest month in Sunnyvale?
October is the month with the most rainfall. Rain falls for 12.4 days and accumulates 4.29" (109mm) of precipitation.
What is the month with the shortest days in Sunnyvale?
December has the shortest days of the year in Sunnyvale, Texas, with an average of 10h and 0min of daylight.
What is the month with the least sunshine in Sunnyvale?
With an average of 5.5h of sunshine, December has the least sunshine of the year.
Average temperature
Sunnyvale, TX
The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (54.3°F).
The months with the highest average low temperature are July and August (75.7°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).
Average pressure
Sunnyvale, TX
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Sunnyvale, TX
- Average wind speed in January:
8.9mph - Average wind speed in February:
9.5mph - Average wind speed in March:
9.8mph - Average wind speed in April:
9.7mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
7.2mph - Average wind speed in August:
6.8mph - Average wind speed in September:
6.6mph - Average wind speed in October:
7.9mph - Average wind speed in November:
8.4mph - Average wind speed in December:
8.4mph
The windiest month (with the highest average wind speed) is March (9.8mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).
Average humidity
Sunnyvale, TX
The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is August (58%).
Average rainfall
Sunnyvale, TX
- Average rainfall in January:
1.93" - Average rainfall in February:
1.85" - Average rainfall in March:
3.11" - Average rainfall in April:
2.91" - Average rainfall in May:
4.17" - Average rainfall in June:
2.91"
The wettest month (with the highest rainfall) is October (4.29").
The driest month (with the least rainfall) is February (1.85").
Average rainfall days
Sunnyvale, TX
- Average rainfall days in January:
7.6 days - Average rainfall days in February:
10.9 days - Average rainfall days in March:
14.3 days - Average rainfall days in April:
14.3 days - Average rainfall days in May:
15.4 days - Average rainfall days in June:
13.3 days
- Average rainfall days in July:
13.1 days - Average rainfall days in August:
13.2 days - Average rainfall days in September:
15.3 days - Average rainfall days in October:
12.4 days - Average rainfall days in November:
9.6 days - Average rainfall days in December:
10.2 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is January (7.6 days).
Average snowfall
Sunnyvale, TX
The month with the highest snowfall is February (0.67").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days
Sunnyvale, TX
- Average snowfall days in January:
0.4 days - Average snowfall days in February:
1.2 days - Average snowfall days in March:
0.2 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:
0.2 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Sunnyvale, TX
- Average daylight in January:
10h and 2min - 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 5min - Average daylight in June:
14h and 2min
- Average daylight in July:
14h and 1min - Average daylight in August:
13h and 2min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 3min - 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:
5h and 5min - Average sunshine in February:
6h and 3min - Average sunshine in March:
6h and 5min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 4min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
10h and 5min - Average sunshine in August:
11h and 1min - Average sunshine in September:
8h and 4min - Average sunshine in October:
6h and 4min - Average sunshine in November:
5h and 5min - Average sunshine in December:
5h and 3min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days
Sunnyvale, TX
- Average sunshine days in January:
21.8 days - Average sunshine days in February:
15.4 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
13.4 days - Average sunshine days in May:
14.1 days - Average sunshine days in June:
13.8 days
- Average sunshine days in July:
16.6 days - Average sunshine days in August:
15.3 days - Average sunshine days in September:
13 days - Average sunshine days in October:
17 days - Average sunshine days in November:
18.6 days - Average sunshine days in December:
19 days
The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is September (13 days).
Average UV index
Sunnyvale, TX
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover
Sunnyvale, TX
The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility
Sunnyvale, TX
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).
Sunnyvale, Texas, USA
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