Climate and monthly weather forecastOld Brownfield, IL
Climate and monthly weather forecast
Weather in January
January, like December, in Old Brownfield, Illinois, is an icy winter month, with an average temperature fluctuating between 28°F (-2.2°C) and 41.4°F (5.2°C). January is the month when Old Brownfield experiences its coldest temperatures, averaging a high of 41.4°F (5.2°C) and a low of 28°F (-2.2°C). Weather in January »Weather in February
The last month of the winter, February, is a chilly month in Old Brownfield, Illinois, with an average temperature fluctuating between 31.6°F (-0.2°C) and 45.7°F (7.6°C). February's onset records a minor alteration in the average high-temperature to a chilly 45.7°F (7.6°C) from January's 41.4°F (5.2°C). Weather in February »Weather in March
The first month of the spring, March, is a moderate month in Old Brownfield, Illinois, with an average temperature fluctuating between 56.3°F (13.5°C) and 40.5°F (4.7°C). March's onset witnesses a shift in the average high-temperature, moving from a chilly 45.7°F (7.6°C) in February to a moderate 56.3°F (13.5°C). Weather in March »Weather in April
April is a comfortable spring month in Old Brownfield, Illinois, with an average temperature ranging between min 49.5°F (9.7°C) and max 67.1°F (19.5°C). The beginning of April signals a rise in the average high-temperature, moving from a mild 56.3°F (13.5°C) in March to a comfortable 67.1°F (19.5°C). Weather in April »Weather in May
The last month of the spring, May, is a warm month in Old Brownfield, Illinois, with an average temperature ranging between min 59°F (15°C) and max 76.5°F (24.7°C). May's onset brings a temperature rise, moving from a refreshing 67.1°F (19.5°C) in April to a moderately hot 76.5°F (24.7°C). Weather in May »Weather in June
June, the first month of the summer in Old Brownfield, is also a moderately hot month, with an average temperature fluctuating between 85.6°F (29.8°C) and 66.7°F (19.3°C). June's arrival is marked by an increase in the average high-temperature, moving from a moderately hot 76.5°F (24.7°C) in May to a still warm 85.6°F (29.8°C). Weather in June »Weather in July
July in Old Brownfield, Illinois, is a tropical summer month, with an average temperature fluctuating between 88.3°F (31.3°C) and 68.9°F (20.5°C). In Old Brownfield, the average temperatures in July are the highest, with a peak at 88.3°F (31.3°C) and a low of 68.9°F (20.5°C). For July, the heat index is evaluated at a scorching 104°F (40°C). Weather in July »Weather in August
The last month of the summer, August, is another tropical month in Old Brownfield, Illinois, with an average temperature fluctuating between 67.3°F (19.6°C) and 86.7°F (30.4°C). Old Brownfield's August showcases an average high-temperature of a still tropical 86.7°F (30.4°C), hardly distinct from July's 88.3°F (31.3°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Old Brownfield, Illinois, with an average temperature varying between 61.7°F (16.5°C) and 81.5°F (27.5°C). Old Brownfield's average high-temperature in September sits at a warm 81.5°F (27.5°C), showing little difference from the previous month. Weather in September »Weather in October
October, the same as September, in Old Brownfield, Illinois, is another pleasant autumn month, with an average temperature varying between 68.9°F (20.5°C) and 50.5°F (10.3°C). The start of October involves a temperature drop, moving from a warm 81.5°F (27.5°C) in September to a pleasant 68.9°F (20.5°C). Weather in October »Weather in November
The last month of the autumn, November, is another cool month in Old Brownfield, Illinois, with an average temperature varying between 39.6°F (4.2°C) and 54.9°F (12.7°C). November's arrival coincides with a drop in the average high-temperature, decreasing from October's agreeable 68.9°F (20.5°C) to a cool 54.9°F (12.7°C). Weather in November »Weather in December
The first month of the winter, December, is also a frosty month in Old Brownfield, Illinois, with an average temperature fluctuating between 45.5°F (7.5°C) and 33.3°F (0.7°C). Old Brownfield in December undergoes a mild reduction in the average high-temperature, shifting from November's fresh 54.9°F (12.7°C) to a chilly 45.5°F (7.5°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Old Brownfield, IL
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (41.4°F).
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (28°F).
Average pressure
Old Brownfield, IL
- Average pressure in January:
30.17"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:
29.98"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"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 (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
Old Brownfield, IL
- Average wind speed in January:
8.9mph - Average wind speed in February:
8.8mph - Average wind speed in March:
8.9mph - Average wind speed in April:
8.9mph - Average wind speed in May:
7.5mph - Average wind speed in June:
6.3mph
- Average wind speed in July:
5.6mph - Average wind speed in August:
5.6mph - Average wind speed in September:
6.3mph - Average wind speed in October:
7.5mph - Average wind speed in November:
8.1mph - Average wind speed in December:
8.3mph
The windiest months (with the highest average wind speed) are January, March and April (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).
Average humidity
Old Brownfield, IL
The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall
Old Brownfield, IL
- Average rainfall in January:
2.48" - Average rainfall in February:
3.78" - Average rainfall in March:
3.78" - Average rainfall in April:
4.29" - Average rainfall in May:
3.78" - Average rainfall in June:
2.91"
The wettest month (with the highest rainfall) is April (4.29").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days
Old Brownfield, IL
- Average rainfall days in January:
11 days - Average rainfall days in February:
11.9 days - Average rainfall days in March:
15.6 days - Average rainfall days in April:
16.1 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
15.1 days
- Average rainfall days in July:
15.3 days - Average rainfall days in August:
14.6 days - Average rainfall days in September:
11.1 days - Average rainfall days in October:
10.2 days - Average rainfall days in November:
11 days - Average rainfall days in December:
11.5 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is October (10.2 days).
Average snowfall
Old Brownfield, IL
The month with the highest snowfall is February (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Old Brownfield, IL
- Average snowfall days in January:
4.3 days - Average snowfall days in February:
3.8 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 days - Average snowfall days in November:
0.8 days - Average snowfall days in December:
2 days
The month with the highest number of snowfall days is January (4.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Old Brownfield, 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 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 42min - Average sunshine in February:
4h and 48min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 54min - Average sunshine in May:
9h and 18min - Average sunshine in June:
10h and 36min
- Average sunshine in July:
10h and 36min - Average sunshine in August:
10h and 24min - Average sunshine in September:
9h and 36min - Average sunshine in October:
6h and 48min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 54min
The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days
Old Brownfield, IL
- Average sunshine days in January:
16.5 days - Average sunshine days in February:
13.6 days - Average sunshine days in March:
13 days - Average sunshine days in April:
12.1 days - Average sunshine days in May:
11 days - Average sunshine days in June:
12.8 days
- Average sunshine days in July:
12.8 days - Average sunshine days in August:
14.4 days - Average sunshine days in September:
16.9 days - Average sunshine days in October:
19.3 days - Average sunshine days in November:
17.9 days - Average sunshine days in December:
17.7 days
The month with the most sunshine days is October (19.3 days).
The month with the least sunshine days is May (11 days).
Average UV index
Old Brownfield, 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
Old Brownfield, IL
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is September (Cloud cover 26).
Average visibility
Old Brownfield, 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).





