Climate and monthly weather forecastStreator, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, in Streator, Illinois, is a freezing cold winter month, with an average temperature ranging between max 29.5°F (-1.4°C) and min 17.8°F (-7.9°C). January, with its average high-temperature of 29.5°F (-1.4°C) and an average low-temperature of 17.8°F (-7.9°C), holds the record as the coldest month. Weather in January »Weather in February
The last month of the winter, February, is a cold month in Streator, Illinois, with an average temperature fluctuating between 20.8°F (-6.2°C) and 33.4°F (0.8°C). February welcomes an average high-temperature of a wintry 33.4°F (0.8°C), not much different from the preceding month. Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Streator, Illinois, with temperature in the range of an average low of 32.7°F (0.4°C) and an average high of 47.5°F (8.6°C). As March begins, there is an increase in the average high-temperature, moving from a wintry 33.4°F (0.8°C) in February to a frosty 47.5°F (8.6°C). Weather in March »Weather in April
April is a refreshing spring month in Streator, Illinois, with an average temperature varying between 42.8°F (6°C) and 59.4°F (15.2°C). In Streator, the average high-temperature in April increases from a chilly 47.5°F (8.6°C) in March to a refreshing 59.4°F (15.2°C). Weather in April »Weather in May
The last month of the spring, May, is an agreeable month in Streator, Illinois, with an average temperature ranging between min 54°F (12.2°C) and max 71.1°F (21.7°C). May's onset witnesses a shift in the average high-temperature, moving from a mild 59.4°F (15.2°C) in April to a pleasant 71.1°F (21.7°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Streator, Illinois, with an average temperature ranging between max 78.8°F (26°C) and min 61.9°F (16.6°C). The onset of June brings a minor temperature shift, with the average high-temperature moving from an agreeable 71.1°F (21.7°C) in May to a moderately hot 78.8°F (26°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Streator, Illinois, with an average temperature varying between 64.4°F (18°C) and 81°F (27.2°C). July is the warmest month, with the temperature often reaching an average high of 81°F (27.2°C) and an average low of 64.4°F (18°C). Throughout July, the heat index is calculated to be a tropical 87.8°F (31°C). Weather in July »Weather in August
August, the last month of the summer in Streator, is another warm month, with an average temperature fluctuating between 79.7°F (26.5°C) and 62.2°F (16.8°C). Streator ushers in August with an average high-temperature of a still moderately hot 79.7°F (26.5°C), showing a close resemblance to the previous month. Weather in August »Weather in September
September, the first month of the autumn in Streator, is still a warm month, with an average temperature fluctuating between 56.5°F (13.6°C) and 75°F (23.9°C). The commencement of September brings an average high-temperature of a still moderately hot 75°F (23.9°C), marking an inconsequential divergence from August. Weather in September »Weather in October
October, like September, in Streator, Illinois, is another enjoyable autumn month, with an average temperature varying between 46°F (7.8°C) and 61.7°F (16.5°C). Transition from September to October is accompanied by a temperature drop, with average high-temperatures decreasing from a warm 75°F (23.9°C) to an enjoyable 61.7°F (16.5°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Streator, Illinois, with an average temperature ranging between max 47.3°F (8.5°C) and min 34°F (1.1°C). As November arrives, Streator's weather displays a notable decrease in high-temperatures, falling from October's enjoyable 61.7°F (16.5°C) to a chilly 47.3°F (8.5°C). Weather in November »Weather in December
December, the first month of the winter in Streator, is also an icy month, with temperature in the range of an average low of 25.5°F (-3.6°C) and an average high of 35.6°F (2°C). Streator in December experiences a subtle temperature decline, with average high-temperatures reducing from a chilly 47.3°F (8.5°C) in November to an icy 35.6°F (2°C). Weather in December »Updated: Aug 29, 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
January, with its average high-temperature of 29.5°F (-1.4°C) and an average low-temperature of 17.8°F (-7.9°C), holds the record as the coldest month.
In Streator, during the entire year, the rain falls for 145 days and collects up to 25.08" (637mm) of precipitation.
Months with snowfall are January through April, October through December.
In Streator, during the entire year, snow falls for 37.9 days and aggregates up to 12.91" (328mm) of snow.
The month with the least sunshine is January, with an average of 3.8h of sunshine.
January and December, with an average maximum UV index of 1, are months with the lowest UV index.
The month with the most snowfall is February, when snow falls for 8.8 days and typically aggregates up to 3.27" (83mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Streator, 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.
The month with the most rainfall is May, when the rain falls for 17.1 days and typically aggregates up to 3.39" (86mm) of precipitation.
May through September are months without snowfall.
The month with the longest days is June, with an average of 15h and 6min of daylight.
The month with the most sunshine is June, with an average of 9.9h of sunshine.
June and July, with an average maximum UV index of 6, are months with the highest UV index.
Streator's July weather, with an average high temperature of 81°F (27.2°C) and an average low temperature of 64.4°F (18°C), tends to be the warmest of the year.
July is the most humid month, with an average relative humidity of 85%.
October is the least humid month, with an average relative humidity of 72%.
December is the month with the least rainfall. Rain falls for 6.9 days and accumulates 1.18" (30mm) of precipitation.
December has the shortest days of the year, with an average of 9h and 18min of daylight.
Average temperature
Streator, IL
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.5°F).
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure
Streator, IL
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.94"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:
30.01"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Streator, IL
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.3mph - Average wind speed in March:
10mph - Average wind speed in April:
10.4mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7.4mph - Average wind speed in October:
9.2mph - Average wind speed in November:
9.9mph - Average wind speed in December:
9.7mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity
Streator, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Streator, IL
- Average rainfall in January:
1.38" - Average rainfall in February:
1.3" - Average rainfall in March:
1.65" - Average rainfall in April:
3.11" - Average rainfall in May:
3.39" - Average rainfall in June:
2.56"
- Average rainfall in July:
2.72" - Average rainfall in August:
2.28" - Average rainfall in September:
1.85" - Average rainfall in October:
2.36" - Average rainfall in November:
1.3" - Average rainfall in December:
1.18"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is December (1.18").
Average rainfall days
Streator, IL
- Average rainfall days in January:
5.5 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
11.9 days - Average rainfall days in April:
14.9 days - Average rainfall days in May:
17.1 days - Average rainfall days in June:
16.8 days
- Average rainfall days in July:
18.1 days - Average rainfall days in August:
16.4 days - Average rainfall days in September:
12.1 days - Average rainfall days in October:
12 days - Average rainfall days in November:
8 days - Average rainfall days in December:
6.9 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is February (5.3 days).
Average snowfall
Streator, IL
The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Streator, IL
- Average snowfall days in January:
11.8 days - Average snowfall days in February:
8.8 days - Average snowfall days in March:
5.1 days - Average snowfall days in April:
1.6 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:
0.3 days - Average snowfall days in November:
2.5 days - Average snowfall days in December:
7.8 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Streator, IL
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 18min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
3h and 48min - Average sunshine in February:
4h and 6min - Average sunshine in March:
6h and 24min - Average sunshine in April:
7h and 54min - Average sunshine in May:
8h and 54min - Average sunshine in June:
9h and 54min
- Average sunshine in July:
9h and 42min - Average sunshine in August:
9h and 48min - Average sunshine in September:
8h and 54min - Average sunshine in October:
5h and 48min - Average sunshine in November:
5h and 12min - Average sunshine in December:
4h and 18min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Streator, IL
- Average sunshine days in January:
14.7 days - Average sunshine days in February:
14.3 days - Average sunshine days in March:
14.8 days - Average sunshine days in April:
11.9 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
10.7 days
- Average sunshine days in July:
9.2 days - Average sunshine days in August:
11.1 days - Average sunshine days in September:
15.9 days - Average sunshine days in October:
17 days - Average sunshine days in November:
18.5 days - Average sunshine days in December:
17.9 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is July (9.2 days).
Average UV index
Streator, IL
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Streator, IL
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility
Streator, IL
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
