Climate and monthly weather forecastMattoon, KY
Climate and monthly weather forecast
Weather in January
January, the same as December, is a wintry winter month in Mattoon, Kentucky, with an average temperature ranging between min 27.5°F (-2.5°C) and max 40.5°F (4.7°C). January, marked by an average high-temperature of 40.5°F (4.7°C) and a low-temperature of 27.5°F (-2.5°C), is the coldest month. Weather in January »Weather in February
The last month of the winter, February, is a chilly month in Mattoon, Kentucky, with temperature in the range of an average high of 45.5°F (7.5°C) and an average low of 31.3°F (-0.4°C). The commencement of February introduces an average high-temperature of a frosty 45.5°F (7.5°C), closely mirroring the preceding month. Weather in February »Weather in March
March, the first month of the spring in Mattoon, is a moderate month, with an average temperature varying between 40.3°F (4.6°C) and 55.8°F (13.2°C). As Mattoon transitions into March, the average high-temperature shows a change, moving from a chilly 45.5°F (7.5°C) in February to a refreshing 55.8°F (13.2°C). Weather in March »Weather in April
April in Mattoon, Kentucky, is an enjoyable spring month, with temperature in the range of an average low of 48.9°F (9.4°C) and an average high of 66.7°F (19.3°C). As Mattoon welcomes April, the average high-temperature sees a rise, transitioning from a refreshing 55.8°F (13.2°C) in March to a comfortable 66.7°F (19.3°C). Weather in April »Weather in May
May, the last month of the spring in Mattoon, is a moderately hot month, with an average temperature fluctuating between 58.5°F (14.7°C) and 75.6°F (24.2°C). May's arrival brings a modest temperature shift, moving from a comfortable 66.7°F (19.3°C) in April to a warm 75.6°F (24.2°C). Weather in May »Weather in June
June, the first month of the summer in Mattoon, is still a warm month, with temperature in the range of an average low of 66°F (18.9°C) and an average high of 83.8°F (28.8°C). Mattoon's transition into June is marked by a minor temperature shift, moving from 75.6°F (24.2°C) in May to a still moderately hot 83.8°F (28.8°C). Weather in June »Weather in July
July is a tropical summer month in Mattoon, Kentucky, with an average temperature ranging between min 68.5°F (20.3°C) and max 86.5°F (30.3°C). July, with an average high of 86.5°F (30.3°C) and a low of 68.5°F (20.3°C), signifies the warmest month of the year. The heat index for July is computed to be a fiery hot 100.4°F (38°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Mattoon, Kentucky, with an average temperature ranging between min 66.7°F (19.3°C) and max 85.3°F (29.6°C). Mattoon notes an average high-temperature of a warm 85.3°F (29.6°C) in August, displaying minor variation from July. Weather in August »Weather in September
September, the first month of the autumn in Mattoon, is still a warm month, with an average temperature fluctuating between 80.4°F (26.9°C) and 61.3°F (16.3°C). Mattoon commences September with an average high-temperature of a still warm 80.4°F (26.9°C), maintaining a close resemblance to the previous month. Weather in September »Weather in October
October, like September, is another pleasant autumn month in Mattoon, Kentucky, with an average temperature fluctuating between 68°F (20°C) and 50°F (10°C). As September transitions into October, Mattoon sees a drop in the average high-temperature, transitioning from a warm 80.4°F (26.9°C) to an agreeable 68°F (20°C). Weather in October »Weather in November
The last month of the autumn, November, is also a fresh month in Mattoon, Kentucky, with an average temperature ranging between max 54.5°F (12.5°C) and min 39.7°F (4.3°C). The onset of November results in a decrease in the average high-temperature, receding from a pleasant 68°F (20°C) in October to a cool 54.5°F (12.5°C). Weather in November »Weather in December
December, the first month of the winter in Mattoon, is also a frosty month, with an average temperature varying between 33.4°F (0.8°C) and 45.5°F (7.5°C). Mattoon's December weather comes with a decrease in average high-temperatures, moving from a cool 54.5°F (12.5°C) in November to a chilly 45.5°F (7.5°C). Weather in December »Updated: Aug 17, 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 proves to be the coldest month, recording an average maximum temperature of 40.5°F (4.7°C) and a minimum temperature of 27.5°F (-2.5°C).
In Mattoon, during the entire year, the rain falls for 148.8 days and collects up to 27.05" (687mm) of precipitation.
January through April, November and December are months with snowfall.
Throughout the year, there are 15 snowfall days, and 4.8" (122mm) of snow is accumulated.
January and February, with an average of 4.6h of sunshine, are months with the least sunshine.
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2.
The month with the most rainfall is February, when the rain falls for 9.9 days and typically aggregates up to 3.03" (77mm) of precipitation.
February is the month with the most snowfall. Snow falls for 4.1 days and accumulates 1.57" (40mm) of snow.
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.
May is the most humid month, with an average relative humidity of 80%.
May through October are months without snowfall.
The months with the highest UV index in Mattoon are May through August, with an average maximum UV index of 6.
With an average of 14h and 42min of daylight, June has the longest days of the year.
The months with the most sunshine are June and July, with an average of 10.5h of sunshine.
The highest temperatures are recorded in July, with averages reaching a high of 86.5°F (30.3°C) and a low of 68.5°F (20.3°C).
September is the month with the least rainfall. Rain falls for 11.7 days and accumulates 1.3" (33mm) of precipitation.
October is the least humid month, with an average relative humidity of 71%.
December has the shortest days of the year, with an average of 9h and 36min of daylight.
Average temperature
Mattoon, KY
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (40.5°F).
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (27.5°F).
Average pressure
Mattoon, KY
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.97"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.15"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 (29.95"Hg).
Average wind speed
Mattoon, KY
- Average wind speed in January:
9.4mph - Average wind speed in February:
9.5mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.4mph - Average wind speed in May:
7.7mph - Average wind speed in June:
6.5mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.4mph - Average wind speed in October:
8mph - Average wind speed in November:
8.6mph - Average wind speed in December:
8.8mph
The windiest month (with the highest average wind speed) is February (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity
Mattoon, KY
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Mattoon, KY
- Average rainfall in January:
1.57" - Average rainfall in February:
3.03" - Average rainfall in March:
2.6" - Average rainfall in April:
2.91" - Average rainfall in May:
2.56" - Average rainfall in June:
2.52"
- Average rainfall in July:
2.32" - Average rainfall in August:
2.24" - Average rainfall in September:
1.3" - Average rainfall in October:
1.81" - Average rainfall in November:
2.13" - Average rainfall in December:
2.05"
The wettest month (with the highest rainfall) is February (3.03").
The driest month (with the least rainfall) is September (1.3").
Average rainfall days
Mattoon, KY
- Average rainfall days in January:
9.1 days - Average rainfall days in February:
9.9 days - Average rainfall days in March:
14.4 days - Average rainfall days in April:
13.6 days - Average rainfall days in May:
16.3 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
16.3 days - Average rainfall days in August:
14.2 days - Average rainfall days in September:
11.7 days - Average rainfall days in October:
8.9 days - Average rainfall days in November:
8.8 days - Average rainfall days in December:
10.8 days
The months with the highest number of rainy days are May and July (16.3 days).
The month with the least rainy days is November (8.8 days).
Average snowfall
Mattoon, KY
The month with the highest snowfall is February (1.57").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Mattoon, KY
- Average snowfall days in January:
4.5 days - Average snowfall days in February:
4.1 days - Average snowfall days in March:
1.7 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:
3.2 days
The month with the highest number of snowfall days is January (4.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Mattoon, KY
- 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 36min - 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 36min
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 36min).
- Average sunshine in January:
4h and 36min - Average sunshine in February:
4h and 36min - Average sunshine in March:
6h and 12min - Average sunshine in April:
8h and 42min - Average sunshine in May:
9h and 18min - Average sunshine in June:
10h and 30min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 24min - Average sunshine in September:
9h and 12min - Average sunshine in October:
6h and 54min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 48min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days
Mattoon, KY
- Average sunshine days in January:
17.7 days - Average sunshine days in February:
14.8 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
15 days - Average sunshine days in May:
12.8 days - Average sunshine days in June:
12.9 days
- Average sunshine days in July:
12.1 days - Average sunshine days in August:
14.3 days - Average sunshine days in September:
17.2 days - Average sunshine days in October:
20.3 days - Average sunshine days in November:
19.4 days - Average sunshine days in December:
18.2 days
The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is July (12.1 days).
Average UV index
Mattoon, KY
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
Mattoon, KY
The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are June, August and September (Cloud cover 28).
Average visibility
Mattoon, KY
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).
