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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, is another subzero cold winter month in Streamwood, Illinois, with temperature in the range of an average low of 16.3°F (-8.7°C) and an average high of 27.7°F (-2.4°C). With average high temperatures of 27.7°F (-2.4°C) and lows of 16.3°F (-8.7°C), January is the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is also a subzero cold month in Streamwood, Illinois, with an average temperature varying between 31.6°F (-0.2°C) and 19°F (-7.2°C). Stepping into February, Streamwood records an average high-temperature of a still subzero cold 31.6°F (-0.2°C), almost consistent with January. Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Streamwood, Illinois, with an average temperature varying between 30.6°F (-0.8°C) and 44.2°F (6.8°C). As March sets, the average high-temperature shows an increase, moving up from a freezing cold 31.6°F (-0.2°C) in February to a chilly 44.2°F (6.8°C). Weather in March »
Weather in April
April is a mild spring month in Streamwood, Illinois, with an average temperature varying between 55.8°F (13.2°C) and 39.9°F (4.4°C). April's arrival coincides with a temperature rise, moving from March's chilly 44.2°F (6.8°C) to a moderate 55.8°F (13.2°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Streamwood, Illinois, with an average temperature fluctuating between 68°F (20°C) and 51.1°F (10.6°C). With the transition into May, Streamwood experiences an increase in average high-temperatures, moving up from a refreshing 55.8°F (13.2°C) in April to an agreeable 68°F (20°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Streamwood, Illinois, with an average temperature varying between 77.4°F (25.2°C) and 59.9°F (15.5°C). The shift from May to June brings an increase in the average high-temperature, moving from an agreeable 68°F (20°C) to a moderately hot 77.4°F (25.2°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Streamwood, Illinois, with an average temperature varying between 64.9°F (18.3°C) and 81.3°F (27.4°C). July, with average temperatures reaching a high of 81.3°F (27.4°C) and a low of 64.9°F (18.3°C), is the warmest month. The average heat index in July is calculated to be a tropical 87.8°F (31°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Streamwood, Illinois, with temperature in the range of an average low of 63.7°F (17.6°C) and an average high of 79.9°F (26.6°C). The onset of August marks an average high-temperature of a still moderately hot 79.9°F (26.6°C), hardly differing from July's 81.3°F (27.4°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Streamwood, Illinois, with an average temperature fluctuating between 56.8°F (13.8°C) and 73.4°F (23°C). September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a moderately hot 79.9°F (26.6°C) in August to a still warm 73.4°F (23°C). Weather in September »
Weather in October
October, like September, is a moderate autumn month in Streamwood, Illinois, with an average temperature ranging between min 45.3°F (7.4°C) and max 60.3°F (15.7°C). The transition into October is accompanied by a temperature decrease, with the average high-temperature shifting from a moderately hot 73.4°F (23°C) in September to a refreshing 60.3°F (15.7°C). Weather in October »
Weather in November
November, the last month of the autumn in Streamwood, is also a frosty month, with temperature in the range of an average high of 45.5°F (7.5°C) and an average low of 32.7°F (0.4°C). With the beginning of November, Streamwood's average high-temperature experiences a significant decrease, moving from a refreshing 60.3°F (15.7°C) in October to a frosty 45.5°F (7.5°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Streamwood, Illinois, with temperature in the range of an average low of 23.9°F (-4.5°C) and an average high of 34°F (1.1°C). The onset of December comes with a shift in the average high-temperature, falling from a frosty 45.5°F (7.5°C) in November to a wintry 34°F (1.1°C). Weather in December »
Updated: Jun 19, 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
What is the coldest month?
January, with average temperatures reaching a high of 27.7°F (-2.4°C) and a low of 16.3°F (-8.7°C), is the coldest month.
What is the most humid month?
The months with the highest humidity are January and February, with an average relative humidity of 83%.
How much does it rain?
In Streamwood, during the entire year, the rain falls for 141.5 days and collects up to 22.76" (578mm) of precipitation.
When does it snow?
Months with snowfall are January through May, October through December.
What is the snowiest month?
The month with the most snowfall is January, when snow falls for 12.3 days and typically aggregates up to 3.39" (86mm) of snow.
How many days does it snow?
Throughout the year, there are 46.4 snowfall days, and 13.03" (331mm) of snow is accumulated.
What is the month with the least sunshine?
With an average of 3.6h of sunshine, January has the least sunshine of the year.
What is the month with the lowest UV index?
The months with the lowest UV index are January and December, with an average maximum UV index of 1.
When is Daylight Saving Time (DST)?
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 wettest month?
The month with the most rainfall is May, when the rain falls for 16.8 days and typically aggregates up to 2.83" (72mm) of precipitation.
When it does not snow?
In Streamwood, snow does not fall in June through September.
When are the longest days?
With an average of 15h and 12min of daylight, June has the longest days of the year.
What are the months with the highest UV index in Streamwood?
June through August, with an average maximum UV index of 6, are months with the highest UV index.
What month is the hottest?
July, with an average high of 81.3°F (27.4°C) and a low of 64.9°F (18.3°C), signifies the warmest month of the year.
What is the month with the most sunshine?
The months with the most sunshine are July and August, with an average of 9.8h of sunshine.
What is the least humid month?
The least humid month in Streamwood is October, with an average relative humidity of 74%.
What is the driest month?
December is the month with the least rainfall. Rain falls for 7.2 days and accumulates 1.02" (26mm) of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 12min of daylight.
Average temperature
Streamwood, IL
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (27.7°F).
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).
Average pressure
Streamwood, IL
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Streamwood, IL
- Average wind speed in January:
9.9mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.7mph - Average wind speed in May:
8.2mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7.1mph - Average wind speed in October:
8.8mph - Average wind speed in November:
9.3mph - Average wind speed in December:
9.2mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity
Streamwood, IL
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Streamwood, IL
- Average rainfall in January:
1.22" - Average rainfall in February:
1.26" - Average rainfall in March:
1.3" - Average rainfall in April:
2.64" - Average rainfall in May:
2.83" - Average rainfall in June:
2.76"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is December (1.02").
Average rainfall days
Streamwood, IL
- Average rainfall days in January:
5.4 days - Average rainfall days in February:
4.8 days - Average rainfall days in March:
10.5 days - Average rainfall days in April:
15.1 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
16 days
- Average rainfall days in July:
17.4 days - Average rainfall days in August:
15.8 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
12.2 days - Average rainfall days in November:
7.8 days - Average rainfall days in December:
7.2 days
The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is February (4.8 days).
Average snowfall
Streamwood, IL
- Average snowfall in January:
3.39" - Average snowfall in February:
3.27" - Average snowfall in March:
1.06" - Average snowfall in April:
2.05" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is January (3.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Streamwood, IL
- Average snowfall days in January:
12.3 days - Average snowfall days in February:
10.9 days - Average snowfall days in March:
6.3 days - Average snowfall days in April:
2.2 days - Average snowfall days in May:
0.1 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:
0.5 days - Average snowfall days in November:
3.5 days - Average snowfall days in December:
10.6 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Streamwood, IL
- Average daylight in January:
9h and 3min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
3h and 4min - Average sunshine in February:
3h and 5min - Average sunshine in March:
5h and 5min - Average sunshine in April:
7h and 2min - Average sunshine in May:
8h and 1min - Average sunshine in June:
9h and 2min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 4min - Average sunshine in October:
5h and 2min - Average sunshine in November:
5h and 0min - Average sunshine in December:
3h and 5min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days
Streamwood, IL
- Average sunshine days in January:
14.3 days - Average sunshine days in February:
11.9 days - Average sunshine days in March:
14.8 days - Average sunshine days in April:
11.3 days - Average sunshine days in May:
11.4 days - Average sunshine days in June:
11.7 days
- Average sunshine days in July:
10.9 days - Average sunshine days in August:
11.3 days - Average sunshine days in September:
14.5 days - Average sunshine days in October:
15 days - Average sunshine days in November:
17.6 days - Average sunshine days in December:
15.6 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is July (10.9 days).
Average UV index
Streamwood, IL
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Streamwood, IL
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July, August and September (Cloud cover 33).
Average visibility
Streamwood, IL
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Streamwood, Illinois, USA
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