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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, is a freezing cold winter month in Lewistown, Illinois, with an average temperature fluctuating between 19.4°F (-7°C) and 31.5°F (-0.3°C). The month of January sees the lowest average temperatures, reaching 31.5°F (-0.3°C) at the peak and 19.4°F (-7°C) at the low. Weather in January »
Weather in February
February, the last month of the winter in Lewistown, is a cold month, with temperature in the range of an average high of 36.3°F (2.4°C) and an average low of 23°F (-5°C). February's arrival brings an average high-temperature of a wintry 36.3°F (2.4°C), slightly deviating from January's 31.5°F (-0.3°C). Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Lewistown, Illinois, with temperature in the range of an average low of 34.3°F (1.3°C) and an average high of 49.6°F (9.8°C). Lewistown's March weather shows an increase in high-temperatures, moving from February's cold 36.3°F (2.4°C) to a frosty 49.6°F (9.8°C). Weather in March »
Weather in April
April in Lewistown, Illinois, is a comfortable spring month, with temperature in the range of an average low of 44.2°F (6.8°C) and an average high of 61.3°F (16.3°C). April witnesses an increase in the average high-temperature, moving from a chilly 49.6°F (9.8°C) in March to a refreshing 61.3°F (16.3°C). Weather in April »
Weather in May
May, the last month of the spring in Lewistown, is a pleasant month, with temperature in the range of an average high of 72°F (22.2°C) and an average low of 55°F (12.8°C). The onset of May brings a temperature shift, with the average high-temperature moving from a refreshing 61.3°F (16.3°C) in April to a pleasant 72°F (22.2°C). Weather in May »
Weather in June
June, the first month of the summer in Lewistown, is a moderately hot month, with an average temperature varying between 80.8°F (27.1°C) and 63.7°F (17.6°C). Lewistown's weather in June presents a minor rise in the average high-temperature, moving from an agreeable 72°F (22.2°C) in May to a moderately hot 80.8°F (27.1°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Lewistown, Illinois, with an average temperature varying between 82.8°F (28.2°C) and 65.8°F (18.8°C). Lewistown's July weather reaches an average high of 82.8°F (28.2°C) and an average low of 65.8°F (18.8°C), making it the warmest month. July's heat index is calculated to be a hot 91.4°F (33°C). Weather in July »
Weather in August
August, the last month of the summer in Lewistown, is another warm month, with an average temperature ranging between max 82°F (27.8°C) and min 63.7°F (17.6°C). The advent of August presents an average high-temperature of a still warm 82°F (27.8°C), maintaining a close correlation with the preceding month. Weather in August »
Weather in September
September, the first month of the autumn in Lewistown, is still a warm month, with an average temperature ranging between max 76.6°F (24.8°C) and min 57.6°F (14.2°C). Lewistown's weather subtly changes with the onset of September, barely falling from a moderately hot 82°F (27.8°C) in August to a still warm 76.6°F (24.8°C). Weather in September »
Weather in October
October, like September, in Lewistown, Illinois, is another enjoyable autumn month, with an average temperature varying between 63°F (17.2°C) and 46.6°F (8.1°C). October's arrival coincides with a drop in the average high-temperature, decreasing from September's warm 76.6°F (24.8°C) to a refreshing 63°F (17.2°C). Weather in October »
Weather in November
November, the last month of the autumn in Lewistown, is also a frosty month, with an average temperature ranging between max 49.1°F (9.5°C) and min 35.1°F (1.7°C). November comes with a drop in the average high-temperature, falling from October's comfortable 63°F (17.2°C) to a chilly 49.1°F (9.5°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Lewistown, Illinois, with an average temperature varying between 37°F (2.8°C) and 26.4°F (-3.1°C). The onset of December comes with a shift in the average high-temperature, falling from a chilly 49.1°F (9.5°C) in November to a wintry 37°F (2.8°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest month in Lewistown?
Lewistown, Illinois, witnesses the coldest weather in January, with temperatures averaging a high of 31.5°F (-0.3°C) and a low of 19.4°F (-7°C).
How many days does it rain in Lewistown?
In Lewistown, Illinois, during the entire year, the rain falls for 131.7 days and collects up to 22.48" (571mm) of precipitation.
When does it snow in Lewistown?
January through April, October through December are months with snowfall in Lewistown.
When does it snow the most in Lewistown?
The month with the most snowfall in Lewistown is January, when snow falls for 9.4 days and typically aggregates up to 3.35" (85mm) of snow.
How many days does it snow in Lewistown?
Throughout the year, there are 27.4 snowfall days, and 9.21" (234mm) of snow is accumulated.
What is the month with the least sunshine in Lewistown?
January has the least sunshine of the year, with an average of 4.1h of sunshine.
When is the lowest UV index in Lewistown?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Lewistown, Illinois.
When is Daylight Saving Time (DST) in Lewistown?
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.
What is the rainiest month in Lewistown?
The month with the most rainfall in Lewistown is May, when the rain falls for 16.7 days and typically aggregates up to 3.23" (82mm) of precipitation.
When it does not snow in Lewistown?
In Lewistown, Illinois, snow does not fall in May through September.
When are the longest days in Lewistown?
The month with the longest days is June, with an average of 15h and 0min of daylight.
What is the month with the most sunshine in Lewistown?
June and July, with an average of 10.1h of sunshine, are months with the most sunshine.
When is the highest UV index in Lewistown?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What part of the year is the hottest in Lewistown?
Lewistown, Illinois, experiences its highest temperatures in July, with an average peak of 82.8°F (28.2°C) and a low of 65.8°F (18.8°C).
What is the most humid month in Lewistown?
With an average relative humidity of 83%, July is the most humid month in Lewistown, Illinois.
What is the least humid month in Lewistown?
With an average relative humidity of 71%, October is the least humid month in Lewistown.
What is the driest month in Lewistown?
The month with the least rainfall in Lewistown is December, when the rain falls for 6.5 days and typically collects 0.94" (24mm) of precipitation.
What is the month with the shortest days in Lewistown?
With an average of 9h and 18min of daylight, December has the shortest days of the year in Lewistown, Illinois.
Average temperature
Lewistown, IL
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (31.5°F).
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).
Average pressure
Lewistown, IL
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Lewistown, IL
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.3mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.4mph - Average wind speed in May:
8.7mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.5mph - Average wind speed in September:
7.5mph - Average wind speed in October:
9.2mph - Average wind speed in November:
9.9mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity
Lewistown, IL
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Lewistown, IL
- Average rainfall in January:
1.02" - Average rainfall in February:
1.1" - Average rainfall in March:
1.65" - Average rainfall in April:
2.6" - Average rainfall in May:
3.23" - Average rainfall in June:
2.68"
- Average rainfall in July:
2.17" - Average rainfall in August:
1.89" - Average rainfall in September:
2.09" - Average rainfall in October:
1.89" - Average rainfall in November:
1.22" - Average rainfall in December:
0.94"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is December (0.94").
Average rainfall days
Lewistown, IL
- Average rainfall days in January:
4.8 days - Average rainfall days in February:
4.7 days - Average rainfall days in March:
11.9 days - Average rainfall days in April:
13.7 days - Average rainfall days in May:
16.7 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
15.8 days - Average rainfall days in August:
13.2 days - Average rainfall days in September:
11 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
7.1 days - Average rainfall days in December:
6.5 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is February (4.7 days).
Average snowfall
Lewistown, IL
The month with the highest snowfall is January (3.35").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Lewistown, IL
- Average snowfall days in January:
9.4 days - Average snowfall days in February:
6.8 days - Average snowfall days in March:
3.3 days - Average snowfall days in April:
1 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:
1.8 days - Average snowfall days in December:
5 days
The month with the highest number of snowfall days is January (9.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Lewistown, IL
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 2min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
4h and 1min - Average sunshine in February:
4h and 2min - Average sunshine in March:
6h and 3min - Average sunshine in April:
8h and 1min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 2min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 3min
The months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days
Lewistown, IL
- Average sunshine days in January:
17.9 days - Average sunshine days in February:
17 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
14.6 days - Average sunshine days in May:
12.5 days - Average sunshine days in June:
11.1 days
- Average sunshine days in July:
11.7 days - Average sunshine days in August:
14.6 days - Average sunshine days in September:
17.1 days - Average sunshine days in October:
17.9 days - Average sunshine days in November:
20 days - Average sunshine days in December:
20.4 days
The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is June (11.1 days).
Average UV index
Lewistown, IL
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Lewistown, IL
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility
Lewistown, 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).
Lewistown, Illinois, USA
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