Climate and monthly weather forecastSpeer, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, in Speer, Illinois, is a freezing cold winter month, with an average temperature fluctuating between 17.8°F (-7.9°C) and 29.7°F (-1.3°C). January is the coldest month, exhibiting average temperatures of 29.7°F (-1.3°C) at the peak and 17.8°F (-7.9°C) at the base. Weather in January »Weather in February
The last month of the winter, February, is a cold month in Speer, Illinois, with an average temperature varying between 21.6°F (-5.8°C) and 34.5°F (1.4°C). With the onset of February, a modest change to a cold 34.5°F (1.4°C) from January's 29.7°F (-1.3°C) is noted in high-temperature. Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Speer, Illinois, with an average temperature ranging between min 33.3°F (0.7°C) and max 48.2°F (9°C). March brings a temperature change, with average high-temperatures moving from February's icy 34.5°F (1.4°C) to a frosty 48.2°F (9°C). Weather in March »Weather in April
April in Speer, Illinois, is a refreshing spring month, with an average temperature fluctuating between 59.7°F (15.4°C) and 43.3°F (6.3°C). The average high-temperature increases in April, moving from a chilly 48.2°F (9°C) in March to a mild 59.7°F (15.4°C). Weather in April »Weather in May
May, the last month of the spring in Speer, is a pleasant month, with an average temperature fluctuating between 54.1°F (12.3°C) and 71.1°F (21.7°C). The start of May brings a rise in the average high-temperature, moving from a refreshing 59.7°F (15.4°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 Speer, Illinois, with an average temperature fluctuating between 62.2°F (16.8°C) and 79.3°F (26.3°C). June signals a minor shift in the average high-temperature, moving from May's agreeable 71.1°F (21.7°C) to a warm 79.3°F (26.3°C). Weather in June »Weather in July
July, like June, in Speer, Illinois, is a moderately hot summer month, with temperature in the range of an average high of 81.1°F (27.3°C) and an average low of 64.8°F (18.2°C). With its high average temperature of 81.1°F (27.3°C) and a low of 64.8°F (18.2°C), July is regarded as the warmest month. In July, the heat index is computed to be a hot 87.8°F (31°C). Weather in July »Weather in August
August, the last month of the summer in Speer, is also a moderately hot month, with an average temperature varying between 80.2°F (26.8°C) and 63.1°F (17.3°C). As Speer welcomes August, the average high-temperature stabilizes at a still warm 80.2°F (26.8°C), showing little deviation from July's 81.1°F (27.3°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Speer, Illinois, with an average temperature varying between 56.7°F (13.7°C) and 75.7°F (24.3°C). As Speer welcomes September, the average high-temperature is noted at a still moderately hot 75.7°F (24.3°C), closely aligning with the preceding month. Weather in September »Weather in October
October, the same as September, is another comfortable autumn month in Speer, Illinois, with an average temperature varying between 45.9°F (7.7°C) and 61.7°F (16.5°C). The beginning of October involves a decrease in the average high-temperature, transitioning from a warm 75.7°F (24.3°C) in September to a refreshing 61.7°F (16.5°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Speer, Illinois, with an average temperature varying between 47.5°F (8.6°C) and 33.8°F (1°C). November involves a decrease in temperature, down from a refreshing 61.7°F (16.5°C) in October to a chilly 47.5°F (8.6°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in Speer, Illinois, with an average temperature ranging between min 25°F (-3.9°C) and max 35.8°F (2.1°C). Speer experiences a temperature shift at the start of December, with average high-temperatures adjusting from a frosty 47.5°F (8.6°C) in November to a cold 35.8°F (2.1°C). Weather in December »Updated: Jul 25, 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 is the month when Speer experiences its coldest temperatures, averaging a high of 29.7°F (-1.3°C) and a low of 17.8°F (-7.9°C).
The month with the least rainfall is January, when the rain falls for 4.2 days and typically collects 0.59" (15mm) of precipitation.
In Speer, during the entire year, the rain falls for 116.8 days and collects up to 13.98" (355mm) of precipitation.
January through April, October through December are months with snowfall.
January is the month with the most snowfall. Snow falls for 8.6 days and accumulates 1.81" (46mm) of snow.
Throughout the year, there are 26.8 snowfall days, and 6.26" (159mm) of snow is accumulated.
The month with the least sunshine is January, with an average of 3.9h of sunshine.
The months with the lowest UV index are January and December, with an average maximum UV index of 1.
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.
The month with the most rainfall is May, when the rain falls for 15.2 days and typically aggregates up to 2.24" (57mm) of precipitation.
May through September are months without snowfall.
June has the longest days of the year in Speer, Illinois, with an average of 15h and 6min of daylight.
June and July, with an average of 10h of sunshine, are months with the most sunshine.
The months with the highest UV index are June and July, with an average maximum UV index of 6.
In Speer, the peak average temperatures are observed in July, with a high of 81.1°F (27.3°C) and a low of 64.8°F (18.2°C).
The most humid month is July, with an average relative humidity of 84%.
With an average relative humidity of 72%, October is the least humid month.
The month with the shortest days is December, with an average of 9h and 18min of daylight.
Average temperature
Speer, IL
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (29.7°F).
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure
Speer, IL
- Average pressure in January:
30.14"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:
29.95"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.97"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 (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Speer, IL
- Average wind speed in January:
10.5mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9mph - Average wind speed in June:
7.9mph
- Average wind speed in July:
6.7mph - Average wind speed in August:
6.6mph - Average wind speed in September:
7.8mph - Average wind speed in October:
9.4mph - Average wind speed in November:
10.1mph - Average wind speed in December:
9.9mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity
Speer, IL
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Speer, IL
- Average rainfall in January:
0.59" - Average rainfall in February:
0.67" - Average rainfall in March:
1.02" - Average rainfall in April:
1.65" - Average rainfall in May:
2.24" - Average rainfall in June:
1.73"
- Average rainfall in July:
1.34" - Average rainfall in August:
1.02" - Average rainfall in September:
1.1" - Average rainfall in October:
1.22" - Average rainfall in November:
0.75" - Average rainfall in December:
0.63"
The wettest month (with the highest rainfall) is May (2.24").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days
Speer, IL
- Average rainfall days in January:
4.2 days - Average rainfall days in February:
4.2 days - Average rainfall days in March:
10.1 days - Average rainfall days in April:
13.6 days - Average rainfall days in May:
15.2 days - Average rainfall days in June:
14.2 days
- Average rainfall days in July:
14.2 days - Average rainfall days in August:
10.5 days - Average rainfall days in September:
9.3 days - Average rainfall days in October:
9.4 days - Average rainfall days in November:
6.5 days - Average rainfall days in December:
5.4 days
The month with the highest number of rainy days is May (15.2 days).
The months with the least rainy days are January and February (4.2 days).
Average snowfall
Speer, IL
The month with the highest snowfall is January (1.81").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Speer, IL
- Average snowfall days in January:
8.6 days - Average snowfall days in February:
6.8 days - Average snowfall days in March:
3.1 days - Average snowfall days in April:
0.7 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:
1.5 days - Average snowfall days in December:
5.8 days
The month with the highest number of snowfall days is January (8.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Speer, 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 54min - Average sunshine in February:
4h and 6min - Average sunshine in March:
6h and 30min - Average sunshine in April:
7h and 54min - Average sunshine in May:
8h and 48min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
9h and 48min - Average sunshine in September:
9h and 6min - Average sunshine in October:
5h and 42min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 18min
The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days
Speer, IL
- Average sunshine days in January:
19.8 days - Average sunshine days in February:
18.8 days - Average sunshine days in March:
17.9 days - Average sunshine days in April:
15.2 days - Average sunshine days in May:
12.8 days - Average sunshine days in June:
13.2 days
- Average sunshine days in July:
13.5 days - Average sunshine days in August:
17.6 days - Average sunshine days in September:
18.3 days - Average sunshine days in October:
19.7 days - Average sunshine days in November:
21.3 days - Average sunshine days in December:
20.4 days
The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is May (12.8 days).
Average UV index
Speer, 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
Speer, IL
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility
Speer, 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).
