Climate and monthly weather forecastTamms, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, is another cold winter month in Tamms, Illinois, with an average temperature varying between 41.2°F (5.1°C) and 28.4°F (-2°C). With average high and low temperatures of 41.2°F (5.1°C) and 28.4°F (-2°C) respectively, January is Tamms's coldest month. Weather in January »Weather in February
The last month of the winter, February, is a chilly month in Tamms, Illinois, with an average temperature varying between 31.8°F (-0.1°C) and 45.7°F (7.6°C). February notes an average high-temperature of a frosty 45.7°F (7.6°C), subtly differing from January's 41.2°F (5.1°C). Weather in February »Weather in March
The first month of the spring, March, is a mild month in Tamms, Illinois, with temperature in the range of an average low of 40.6°F (4.8°C) and an average high of 56.8°F (13.8°C). Tamms sees an increase in the average high-temperature with the arrival of March, moving from February's frosty 45.7°F (7.6°C) to a mild 56.8°F (13.8°C). Weather in March »Weather in April
April in Tamms, Illinois, is a comfortable spring month, with an average temperature varying between 50.2°F (10.1°C) and 67.6°F (19.8°C). The arrival of April sees a shift in the average high-temperature, moving from a moderate 56.8°F (13.8°C) in March to a still refreshing 67.6°F (19.8°C). Weather in April »Weather in May
May, the last month of the spring in Tamms, is a warm month, with an average temperature ranging between min 59.5°F (15.3°C) and max 76.6°F (24.8°C). The shift from April to May brings an increase in the average high-temperature, moving from a refreshing 67.6°F (19.8°C) to a moderately hot 76.6°F (24.8°C). Weather in May »Weather in June
June, the first month of the summer in Tamms, is a hot month, with temperature in the range of an average high of 86°F (30°C) and an average low of 67.6°F (19.8°C). Entering June, Tamms sees a temperature rise, with the average high-temperature advancing from May's warm 76.6°F (24.8°C) to a tropical 86°F (30°C). Weather in June »Weather in July
July, the same as June, in Tamms, Illinois, is another hot summer month, with an average temperature fluctuating between 88.2°F (31.2°C) and 69.8°F (21°C). With average high temperatures of 88.2°F (31.2°C) and lows of 69.8°F (21°C), July is the warmest month. Throughout July, the heat index is calculated to be a blisteringly hot 104°F (40°C). Weather in July »Weather in August
The last month of the summer, August, is also a hot month in Tamms, Illinois, with an average temperature ranging between max 86.4°F (30.2°C) and min 67.5°F (19.7°C). The transition from July to August sees an average high-temperature of a still hot 86.4°F (30.2°C), indicating a minor variance from the prior month. Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Tamms, Illinois, with temperature in the range of an average high of 81.5°F (27.5°C) and an average low of 61.9°F (16.6°C). Tamms transitions into September recording an average high-temperature of a moderately hot 81.5°F (27.5°C), closely aligning with the preceding month's temperature. Weather in September »Weather in October
October, like September, is another pleasant autumn month in Tamms, Illinois, with an average temperature fluctuating between 51.1°F (10.6°C) and 68.9°F (20.5°C). October is characterized by a reduction in the average high-temperature, from a moderately hot 81.5°F (27.5°C) in September to an agreeable 68.9°F (20.5°C). Weather in October »Weather in November
November, the last month of the autumn in Tamms, is another mild month, with an average temperature fluctuating between 40.1°F (4.5°C) and 55.4°F (13°C). November weather is marked by a drop in the average high-temperature, falling from an agreeable 68.9°F (20.5°C) in October to a mild 55.4°F (13°C). Weather in November »Weather in December
The first month of the winter, December, is also a frosty month in Tamms, Illinois, with an average temperature ranging between max 45.5°F (7.5°C) and min 33.8°F (1°C). December's arrival comes with a decrease in the average high-temperature, moving from a moderate 55.4°F (13°C) in November to a chilly 45.5°F (7.5°C). Weather in December »Updated: Aug 28, 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
Tamms witnesses the coldest weather in January, with temperatures averaging a high of 41.2°F (5.1°C) and a low of 28.4°F (-2°C).
In Tamms, during the entire year, the rain falls for 156.3 days and collects up to 36.65" (931mm) of precipitation.
Months with snowfall are January through April, October through December.
In Tamms, during the entire year, snow falls for 11.5 days and aggregates up to 4.88" (124mm) of snow.
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index.
February, March, May and December, with an average relative humidity of 78%, are most humid months.
February is the month with the most snowfall. Snow falls for 3.8 days and accumulates 1.5" (38mm) of snow.
February has the least sunshine of the year, with an average of 4.7h of sunshine.
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.
April is the month with the most rainfall. Rain falls for 15.2 days and accumulates 4.21" (107mm) of precipitation.
May through September are months without snowfall.
The months with the highest UV index are May through August, with an average maximum UV index of 6.
The month with the longest days is June, with an average of 14h and 42min of daylight.
The month with the most sunshine is June, with an average of 10.7h of sunshine.
July, on average, is the warmest month, registering a high temperature of 88.2°F (31.2°C) and a low of 69.8°F (21°C).
The month with the least rainfall is September, when the rain falls for 11.4 days and typically collects 1.42" (36mm) of precipitation.
October is the least humid month, with an average relative humidity of 69%.
December has the shortest days of the year, with an average of 9h and 42min of daylight.
Average temperature
Tamms, IL
The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (41.2°F).
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).
Average pressure
Tamms, IL
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Tamms, IL
- Average wind speed in January:
9.1mph - Average wind speed in February:
9.1mph - Average wind speed in March:
9.1mph - Average wind speed in April:
9mph - Average wind speed in May:
7.6mph - Average wind speed in June:
6.4mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.3mph - Average wind speed in October:
7.6mph - Average wind speed in November:
8.3mph - Average wind speed in December:
8.5mph
The windiest months (with the highest average wind speed) are January, February and March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity
Tamms, IL
The months with the highest relative humidity are February, March, May and December (78%).
The month with the lowest relative humidity is October (69%).
Average rainfall
Tamms, IL
- Average rainfall in January:
2.36" - Average rainfall in February:
3.58" - Average rainfall in March:
3.94" - Average rainfall in April:
4.21" - Average rainfall in May:
3.94" - Average rainfall in June:
2.95"
- Average rainfall in July:
2.83" - Average rainfall in August:
2.72" - Average rainfall in September:
1.42" - Average rainfall in October:
2.68" - Average rainfall in November:
3.11" - Average rainfall in December:
2.91"
The wettest month (with the highest rainfall) is April (4.21").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days
Tamms, IL
- Average rainfall days in January:
9.8 days - Average rainfall days in February:
11.4 days - Average rainfall days in March:
15.4 days - Average rainfall days in April:
15.2 days - Average rainfall days in May:
17.1 days - Average rainfall days in June:
14.7 days
- Average rainfall days in July:
15.7 days - Average rainfall days in August:
13.6 days - Average rainfall days in September:
11.4 days - Average rainfall days in October:
11.3 days - Average rainfall days in November:
10.2 days - Average rainfall days in December:
10.5 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (9.8 days).
Average snowfall
Tamms, IL
The month with the highest snowfall is February (1.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Tamms, IL
- Average snowfall days in January:
3.4 days - Average snowfall days in February:
3.8 days - Average snowfall days in March:
1.3 days - Average snowfall days in April:
0.3 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:
0.1 days - Average snowfall days in November:
1.1 days - Average snowfall days in December:
1.5 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Tamms, IL
- Average daylight in January:
9h and 54min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 12min - Average daylight in June:
14h and 42min
- Average daylight in July:
14h and 24min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 12min - Average daylight in December:
9h and 42min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January:
4h and 48min - Average sunshine in February:
4h and 42min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 48min - Average sunshine in May:
9h and 18min - Average sunshine in June:
10h and 42min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 24min - Average sunshine in September:
9h and 36min - Average sunshine in October:
6h and 36min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 54min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days
Tamms, IL
- Average sunshine days in January:
17.4 days - Average sunshine days in February:
13.8 days - Average sunshine days in March:
12.8 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
13.1 days
- Average sunshine days in July:
13.5 days - Average sunshine days in August:
15.1 days - Average sunshine days in September:
16.5 days - Average sunshine days in October:
18.5 days - Average sunshine days in November:
18.3 days - Average sunshine days in December:
18.4 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (12.3 days).
Average UV index
Tamms, IL
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover
Tamms, IL
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility
Tamms, IL
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).
