Climate and monthly weather forecastWaterman, IL
Climate and monthly weather forecast
Weather in January
January, like December, is another subzero cold winter month in Waterman, Illinois, with temperature in the range of an average high of 27.5°F (-2.5°C) and an average low of 15.6°F (-9.1°C). January is the coldest month of the year, registering average temperatures as high as 27.5°F (-2.5°C) and as low as 15.6°F (-9.1°C). Weather in January »Weather in February
The last month of the winter, February, is a cold month in Waterman, Illinois, with an average temperature ranging between max 32°F (0°C) and min 19°F (-7.2°C). The advent of February sees the average high-temperature at an icy 32°F (0°C), subtly shifted from January's 27.5°F (-2.5°C). Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Waterman, Illinois, with an average temperature fluctuating between 30.9°F (-0.6°C) and 45.5°F (7.5°C). As Waterman, Illinois, welcomes March, the average high-temperature sees a rise, transitioning from a wintry 32°F (0°C) in February to a frosty 45.5°F (7.5°C). Weather in March »Weather in April
April is a moderate spring month in Waterman, Illinois, with an average temperature ranging between min 40.5°F (4.7°C) and max 57°F (13.9°C). April's onset is marked by a temperature increase, moving from a chilly 45.5°F (7.5°C) in March to a refreshing 57°F (13.9°C). Weather in April »Weather in May
May, the last month of the spring in Waterman, is a pleasant month, with an average temperature varying between 52.2°F (11.2°C) and 68.9°F (20.5°C). As Waterman enters May, the average high-temperature increases from the a refreshing 57°F (13.9°C) of April to a pleasant 68.9°F (20.5°C). Weather in May »Weather in June
June, the first month of the summer in Waterman, is a warm month, with an average temperature ranging between min 60.4°F (15.8°C) and max 78.1°F (25.6°C). In June, the average high-temperature increases from an agreeable 68.9°F (20.5°C) in May to a warm 78.1°F (25.6°C). Weather in June »Weather in July
July, like June, in Waterman, Illinois, is a moderately hot summer month, with an average temperature varying between 80.6°F (27°C) and 63.3°F (17.4°C). Waterman's warmest month, July, registers temperatures that range from a high of 80.6°F (27°C) to a low of 63.3°F (17.4°C). Throughout July, the heat index is calculated to be a tropical 86°F (30°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Waterman, Illinois, with an average temperature fluctuating between 61.5°F (16.4°C) and 79°F (26.1°C). August's presence records an average high-temperature of a still warm 79°F (26.1°C), closely mirroring July's climate. Weather in August »Weather in September
September, the first month of the autumn in Waterman, is still a warm month, with an average temperature fluctuating between 73.8°F (23.2°C) and 55.4°F (13°C). September's arrival brings an average high-temperature of a still moderately hot 73.8°F (23.2°C), demonstrating subtle variation from the preceding month. Weather in September »Weather in October
October, the same as September, in Waterman, Illinois, is another mild autumn month, with an average temperature varying between 44.8°F (7.1°C) and 60.3°F (15.7°C). Waterman, Illinois, observes a minor decrease in the average high-temperature with the arrival of October, falling from September's moderately hot 73.8°F (23.2°C) to a refreshing 60.3°F (15.7°C). Weather in October »Weather in November
November, the last month of the autumn in Waterman, is another chilly month, with an average temperature fluctuating between 45.5°F (7.5°C) and 32.5°F (0.3°C). The drop of average high-temperatures is noticeable in November, with a decrease from a moderate 60.3°F (15.7°C) in October to a chilly 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 Waterman, Illinois, with an average temperature varying between 23.9°F (-4.5°C) and 34.2°F (1.2°C). In the transition to December, Waterman observes a drop in the average high-temperature, moving from a chilly 45.5°F (7.5°C) in November to a wintry 34.2°F (1.2°C). Weather in December »Updated: Feb 12, 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 27.5°F (-2.5°C) and an average low-temperature of 15.6°F (-9.1°C), holds the record as the coldest month.
In Waterman, Illinois, during the entire year, the rain falls for 158.9 days and collects up to 32.52" (826mm) of precipitation.
January through April, October through December are months with snowfall in Waterman, Illinois.
January is the month with the most snowfall. Snow falls for 11.8 days and accumulates 5" (127mm) of snow.
Throughout the year, there are 42.1 snowfall days, and 17.48" (444mm) of snow is accumulated.
January has the least sunshine of the year, with an average of 3.8h of sunshine.
The months with the lowest UV index in Waterman, Illinois, 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 in Waterman, Illinois, 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 in Waterman is May, when the rain falls for 18.1 days and typically aggregates up to 4.41" (112mm) of precipitation.
In Waterman, Illinois, snow does not fall in May through September.
With an average of 15h and 12min of daylight, June has the longest days of the year in Waterman.
June through August, with an average of 9.6h of sunshine, are months with the most sunshine in Waterman, Illinois.
June and August, with an average maximum UV index of 6, are months with the highest UV index.
During the warmest month in Waterman, July, temperatures average a high of 80.6°F (27°C) and a low of 63.3°F (17.4°C).
The most humid month in Waterman is July, with an average relative humidity of 85%.
The least humid month in Waterman, Illinois, is October, with an average relative humidity of 74%.
The months with the least rainfall in Waterman are November and December Rain falls for 10.3 days and accumulates 1.69" (43mm) of rain.
The month with the shortest days in Waterman, Illinois, is December, with an average of 9h and 12min of daylight.
Average temperature
Waterman, IL
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (27.5°F).
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).
Average pressure
Waterman, 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:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.1"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
Waterman, IL
- Average wind speed in January:
9.8mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.6mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8.4mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6mph - Average wind speed in September:
7mph - Average wind speed in October:
8.8mph - Average wind speed in November:
9.4mph - Average wind speed in December:
9.2mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity
Waterman, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Waterman, IL
- Average rainfall in January:
1.77" - Average rainfall in February:
1.73" - Average rainfall in March:
2.01" - Average rainfall in April:
3.82" - Average rainfall in May:
4.41" - Average rainfall in June:
4.13"
- Average rainfall in July:
3.35" - Average rainfall in August:
2.83" - Average rainfall in September:
2.28" - Average rainfall in October:
2.8" - Average rainfall in November:
1.69" - Average rainfall in December:
1.69"
The wettest month (with the highest rainfall) is May (4.41").
The driest months (with the least rainfall) are November and December (1.69").
Average rainfall days
Waterman, IL
- Average rainfall days in January:
5.3 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
12.8 days - Average rainfall days in April:
16.9 days - Average rainfall days in May:
18.1 days - Average rainfall days in June:
18.8 days
- Average rainfall days in July:
19.2 days - Average rainfall days in August:
17.2 days - Average rainfall days in September:
13.7 days - Average rainfall days in October:
13.3 days - Average rainfall days in November:
10.3 days - Average rainfall days in December:
8 days
The month with the highest number of rainy days is July (19.2 days).
The months with the least rainy days are January and February (5.3 days).
Average snowfall
Waterman, IL
The month with the highest snowfall is January (5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Waterman, IL
- Average snowfall days in January:
11.8 days - Average snowfall days in February:
10.4 days - Average snowfall days in March:
6 days - Average snowfall days in April:
1.8 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:
0.4 days - Average snowfall days in November:
3.3 days - Average snowfall days in December:
8.3 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Waterman, IL
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 36min - Average daylight in June:
15h and 12min
- Average daylight in July:
14h and 54min - 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 48min - Average daylight in December:
9h and 12min
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 48min - Average sunshine in February:
3h and 54min - Average sunshine in March:
6h and 6min - Average sunshine in April:
7h and 36min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 36min
- Average sunshine in July:
9h and 36min - Average sunshine in August:
9h and 36min - Average sunshine in September:
8h and 42min - Average sunshine in October:
5h and 36min - Average sunshine in November:
5h and 6min - Average sunshine in December:
4h and 6min
The months with the most sunshine are June, July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Waterman, IL
- Average sunshine days in January:
15.3 days - Average sunshine days in February:
13.2 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
10.4 days - Average sunshine days in May:
10.3 days - Average sunshine days in June:
9.8 days
- Average sunshine days in July:
8.5 days - Average sunshine days in August:
10.4 days - Average sunshine days in September:
14.3 days - Average sunshine days in October:
15.7 days - Average sunshine days in November:
17.4 days - Average sunshine days in December:
16.3 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is July (8.5 days).
Average UV index
Waterman, IL
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Waterman, IL
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are August and September (Cloud cover 34).
Average visibility
Waterman, IL
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
