Climate and monthly weather forecastMontgomery, IL
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in Montgomery, Illinois, with an average temperature fluctuating between 28.4°F (-2°C) and 16.7°F (-8.5°C). January, recording an average high temperature of 28.4°F (-2°C) and a low temperature of 16.7°F (-8.5°C), is Montgomery's coldest month. Weather in January »Weather in February
The last month of the winter, February, is an icy month in Montgomery, Illinois, with an average temperature ranging between max 32.5°F (0.3°C) and min 19.8°F (-6.8°C). With the onset of February, the average high-temperature stands at a wintry 32.5°F (0.3°C), closely aligned with January's 28.4°F (-2°C). Weather in February »Weather in March
The first month of the spring, March, is a frosty month in Montgomery, Illinois, with temperature in the range of an average low of 31.5°F (-0.3°C) and an average high of 45.7°F (7.6°C). Montgomery's March weather shows an increase in high-temperatures, moving from February's icy 32.5°F (0.3°C) to a frosty 45.7°F (7.6°C). Weather in March »Weather in April
April in Montgomery, Illinois, is a mild spring month, with an average temperature ranging between min 40.8°F (4.9°C) and max 57°F (13.9°C). As March gives way to April, the average high-temperature displays an increase, moving from a frosty 45.7°F (7.6°C) to a mild 57°F (13.9°C). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Montgomery, Illinois, with an average temperature fluctuating between 52.3°F (11.3°C) and 69.4°F (20.8°C). An upsurge in temperatures occurs as April gives way to May, with average highs shifting from a mild 57°F (13.9°C) to an agreeable 69.4°F (20.8°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Montgomery, Illinois, with an average temperature ranging between max 78.4°F (25.8°C) and min 60.8°F (16°C). Montgomery sees an increase in the average high-temperature with the arrival of June, moving from May's pleasant 69.4°F (20.8°C) to a moderately hot 78.4°F (25.8°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Montgomery, Illinois, with temperature in the range of an average low of 64.2°F (17.9°C) and an average high of 81.1°F (27.3°C). The average temperatures reach their apex in July, averaging 81.1°F (27.3°C) at the high end and 64.2°F (17.9°C) at the low end. July's average heat index is calculated to be a hot 87.8°F (31°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Montgomery, Illinois, with an average temperature ranging between min 62.4°F (16.9°C) and max 79.3°F (26.3°C). Montgomery observes a minor difference in average high-temperatures between July's 81.1°F (27.3°C) and August's 79.3°F (26.3°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Montgomery, Illinois, with temperature in the range of an average low of 56.3°F (13.5°C) and an average high of 74.1°F (23.4°C). September's average high-temperature stands at a still warm 74.1°F (23.4°C), showing little deviation from August's 79.3°F (26.3°C). Weather in September »Weather in October
October, the same as September, is another comfortable autumn month in Montgomery, Illinois, with an average temperature ranging between min 45.1°F (7.3°C) and max 60.8°F (16°C). Montgomery experiences a temperature shift at the start of October, with average high-temperatures adjusting from a moderately hot 74.1°F (23.4°C) in September to a refreshing 60.8°F (16°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Montgomery, Illinois, with an average temperature varying between 33.3°F (0.7°C) and 46°F (7.8°C). As October transitions into November, Montgomery sees a clear drop in the average high-temperature, declining from an enjoyable 60.8°F (16°C) to a chilly 46°F (7.8°C). Weather in November »Weather in December
December, the first month of the winter in Montgomery, is also an icy month, with temperature in the range of an average low of 24.1°F (-4.4°C) and an average high of 34.5°F (1.4°C). The decrease of average high-temperatures is mild in December, with a decline from a chilly 46°F (7.8°C) in November to a cold 34.5°F (1.4°C). Weather in December »Updated: Aug 23, 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 average temperatures reaching a high of 28.4°F (-2°C) and a low of 16.7°F (-8.5°C), is the coldest month.
The months with the highest humidity are January, February, July and August, with an average relative humidity of 83%.
Throughout the year, there are 133.1 rainfall days, and 16.93" (430mm) of precipitation is accumulated.
January through April, October through December are months with snowfall.
January is the month with the most snowfall. Snow falls for 10.7 days and accumulates 1.73" (44mm) of snow.
In Montgomery, during the entire year, snow falls for 39.5 days and aggregates up to 6.69" (170mm) of snow.
The month with the least sunshine is January, with an average of 3.8h 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.
May through September are months without snowfall.
June is the month with the most rainfall. Rain falls for 14.9 days and accumulates 2.24" (57mm) of precipitation.
With an average of 15h and 12min of daylight, June has the longest days of the year.
The months with the highest UV index are June and July, with an average maximum UV index of 6.
Montgomery notes the warmest temperatures in July, with a average high of 81.1°F (27.3°C) and a low of 64.2°F (17.9°C).
July has the most sunshine of the year, with an average of 9.8h of sunshine.
The least humid month is October, with an average relative humidity of 74%.
November and December are months with the least rain when the rain falls for 7.6 days and typically aggregates up to 0.75" (19mm) of rain.
December has the shortest days of the year, with an average of 9h and 12min of daylight.
Average temperature
Montgomery, 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 (28.4°F).
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure
Montgomery, 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:
30.1"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
Montgomery, IL
- Average wind speed in January:
9.6mph - Average wind speed in February:
9.6mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.7mph - Average wind speed in May:
8.2mph - Average wind speed in June:
7.1mph
The windiest month (with the highest average wind speed) is April (9.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity
Montgomery, IL
The months with the highest relative humidity are January, February, July and August (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Montgomery, IL
- Average rainfall in January:
0.87" - Average rainfall in February:
0.79" - Average rainfall in March:
0.94" - Average rainfall in April:
1.77" - Average rainfall in May:
2.13" - Average rainfall in June:
2.24"
- Average rainfall in July:
2.17" - Average rainfall in August:
1.77" - Average rainfall in September:
1.3" - Average rainfall in October:
1.46" - Average rainfall in November:
0.75" - Average rainfall in December:
0.75"
The wettest month (with the highest rainfall) is June (2.24").
The driest months (with the least rainfall) are November and December (0.75").
Average rainfall days
Montgomery, IL
- Average rainfall days in January:
5 days - Average rainfall days in February:
4.3 days - Average rainfall days in March:
10.3 days - Average rainfall days in April:
14.4 days - Average rainfall days in May:
15.3 days - Average rainfall days in June:
14.9 days
- Average rainfall days in July:
16.6 days - Average rainfall days in August:
15 days - Average rainfall days in September:
12 days - Average rainfall days in October:
11.2 days - Average rainfall days in November:
7.6 days - Average rainfall days in December:
6.5 days
The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is February (4.3 days).
Average snowfall
Montgomery, IL
The month with the highest snowfall is January (1.73").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Montgomery, IL
- Average snowfall days in January:
10.7 days - Average snowfall days in February:
9.3 days - Average snowfall days in March:
5.6 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:
2.8 days - Average snowfall days in December:
8.8 days
The month with the highest number of snowfall days is January (10.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Montgomery, 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:
4h and 0min - Average sunshine in March:
6h and 12min - Average sunshine in April:
7h and 42min - Average sunshine in May:
8h and 42min - Average sunshine in June:
9h and 42min
- Average sunshine in July:
9h and 48min - Average sunshine in August:
9h and 42min - Average sunshine in September:
8h and 42min - Average sunshine in October:
5h and 42min - Average sunshine in November:
5h and 12min - Average sunshine in December:
4h and 12min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Montgomery, IL
- Average sunshine days in January:
17 days - Average sunshine days in February:
15.4 days - Average sunshine days in March:
15.7 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
12.5 days - Average sunshine days in June:
11.8 days
- Average sunshine days in July:
10.2 days - Average sunshine days in August:
11.6 days - Average sunshine days in September:
14.5 days - Average sunshine days in October:
17.6 days - Average sunshine days in November:
19.5 days - Average sunshine days in December:
17.7 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (10.2 days).
Average UV index
Montgomery, 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
Montgomery, IL
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility
Montgomery, 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).
