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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, the same as December, in Armstrong, Illinois, is another subzero cold winter month, with temperature in the range of an average high of 31.5°F (-0.3°C) and an average low of 19.8°F (-6.8°C). The lowest temperatures are recorded in January, with averages reaching a high of 31.5°F (-0.3°C) and a low of 19.8°F (-6.8°C). Weather in January »
Weather in February
The last month of the winter, February, is an icy month in Armstrong, Illinois, with temperature in the range of an average high of 36°F (2.2°C) and an average low of 23.4°F (-4.8°C). The onset of February brings an average high-temperature of an icy 36°F (2.2°C), nearly matching the January temperature. Weather in February »
Weather in March
March, the first month of the spring in Armstrong, is a chilly month, with an average temperature varying between 48.9°F (9.4°C) and 34.3°F (1.3°C). The onset of March marks an increase in the average high-temperature, moving from a cold 36°F (2.2°C) in February to a chilly 48.9°F (9.4°C). Weather in March »
Weather in April
April is a mild spring month in Armstrong, Illinois, with temperature in the range of an average low of 44.6°F (7°C) and an average high of 60.4°F (15.8°C). With the onset of April, Armstrong's weather sees a temperature rise, transitioning from a frosty 48.9°F (9.4°C) in March to a moderate 60.4°F (15.8°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Armstrong, Illinois, with an average temperature ranging between max 71.8°F (22.1°C) and min 55°F (12.8°C). As Armstrong enters May, the average high-temperature increases from the a moderate 60.4°F (15.8°C) of April to a pleasant 71.8°F (22.1°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Armstrong, Illinois, with an average temperature ranging between min 63.1°F (17.3°C) and max 79.5°F (26.4°C). The onset of June introduces a subtle rise in the average high-temperature, nudging from an agreeable 71.8°F (22.1°C) in May to a warm 79.5°F (26.4°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Armstrong, Illinois, with temperature in the range of an average low of 64.4°F (18°C) and an average high of 81.1°F (27.3°C). The highest temperatures are recorded in July, with averages reaching a high of 81.1°F (27.3°C) and a low of 64.4°F (18°C). July's heat index is estimated at a tropical 87.8°F (31°C). Weather in July »
Weather in August
August, the last month of the summer in Armstrong, is another warm month, with an average temperature varying between 63°F (17.2°C) and 80.2°F (26.8°C). Armstrong starts August with an average high-temperature of a still warm 80.2°F (26.8°C), a minor shift from July's 81.1°F (27.3°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Armstrong, Illinois, with an average temperature varying between 75.6°F (24.2°C) and 57.6°F (14.2°C). Armstrong's transition from August to September introduces an average high-temperature of a still moderately hot 75.6°F (24.2°C), marking an insignificant variation from the 80.2°F (26.8°C). Weather in September »
Weather in October
October, like September, in Armstrong, Illinois, is another comfortable autumn month, with an average temperature fluctuating between 46.9°F (8.3°C) and 62.8°F (17.1°C). A change in temperatures is noted as September gives way to October, with average highs reducing from a moderately hot 75.6°F (24.2°C) to an enjoyable 62.8°F (17.1°C). Weather in October »
Weather in November
November, the last month of the autumn in Armstrong, is also a frosty month, with an average temperature fluctuating between 35.4°F (1.9°C) and 48.4°F (9.1°C). A decrease in the average high-temperature marks November, falling from October's refreshing 62.8°F (17.1°C) to a chilly 48.4°F (9.1°C). Weather in November »
Weather in December
December, the first month of the winter in Armstrong, is also an icy month, with temperature in the range of an average high of 37.6°F (3.1°C) and an average low of 27.3°F (-2.6°C). December brings a drop in Armstrong's average high-temperature, falling from a frosty 48.4°F (9.1°C) in November to an icy 37.6°F (3.1°C). Weather in December »
[Resources]Frequently asked questions
What are the coldest months in Armstrong?
In Armstrong, Illinois, the average lowest temperatures are observed in January, with a high of 31.5°F (-0.3°C) and a low of 19.8°F (-6.8°C).
How much does it rain in Armstrong?
In Armstrong, Illinois, during the entire year, the rain falls for 146.3 days and collects up to 22.76" (578mm) of precipitation.
When does it snow in Armstrong?
Months with snowfall in Armstrong are January through April, November and December.
How many days does it snow in Armstrong?
Throughout the year, in Armstrong, there are 34.2 snowfall days, and 7.8" (198mm) of snow is accumulated.
What is the month with the least sunshine in Armstrong?
January has the least sunshine of the year in Armstrong, with an average of 3.9h of sunshine.
What is the driest month in Armstrong?
The month with the least rainfall in Armstrong, Illinois, is February, when the rain falls for 6.7 days and typically collects 1.18" (30mm) of precipitation.
When does it snow the most in Armstrong?
February is the month with the most snowfall. Snow falls for 8.8 days and accumulates 2.32" (59mm) of snow.
When is Daylight Saving Time (DST) in Armstrong?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Armstrong, Illinois, 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 Armstrong?
The month with the most rainfall is May, when the rain falls for 16.6 days and typically aggregates up to 2.76" (70mm) of precipitation.
When it does not snow in Armstrong?
In Armstrong, snow does not fall in May through October.
When are the longest days in Armstrong?
June has the longest days of the year in Armstrong, with an average of 15h and 0min of daylight.
What month has the most sunshine in Armstrong?
The month with the most sunshine is June, with an average of 10h of sunshine.
When is the highest UV index in Armstrong?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What is the warmest month in Armstrong?
July brings the highest temperatures in Armstrong, with an average high of 81.1°F (27.3°C) and an average low of 64.4°F (18°C).
What is the most humid month in Armstrong?
With an average relative humidity of 85%, July is the most humid month.
What is the least humid month in Armstrong?
The least humid month is October, with an average relative humidity of 72%.
What is the month with the shortest days in Armstrong?
With an average of 9h and 24min of daylight, December has the shortest days of the year in Armstrong.
What is the month with the lowest UV index in Armstrong?
December is the month with the lowest UV index, with an average maximum UV index of 1.
Average temperature
Armstrong, 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 (31.5°F).
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure
Armstrong, IL
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.93"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:
30.02"Hg - Average pressure in November:
30.12"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 (29.93"Hg).
Average wind speed
Armstrong, IL
- Average wind speed in January:
10.5mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10mph - Average wind speed in April:
10.3mph - Average wind speed in May:
8.7mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.2mph - 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 January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity
Armstrong, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Armstrong, IL
- Average rainfall in January:
1.42" - Average rainfall in February:
1.18" - Average rainfall in March:
2.09" - Average rainfall in April:
2.72" - Average rainfall in May:
2.76" - Average rainfall in June:
2.68"
- Average rainfall in July:
2.13" - Average rainfall in August:
2.13" - Average rainfall in September:
1.3" - Average rainfall in October:
1.73" - Average rainfall in November:
1.38" - Average rainfall in December:
1.26"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is February (1.18").
Average rainfall days
Armstrong, IL
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
6.7 days - Average rainfall days in March:
11.9 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
16.6 days - Average rainfall days in June:
16.3 days
- Average rainfall days in July:
17.7 days - Average rainfall days in August:
14.3 days - Average rainfall days in September:
12.1 days - Average rainfall days in October:
11.9 days - Average rainfall days in November:
8.2 days - Average rainfall days in December:
8.5 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is February (6.7 days).
Average snowfall
Armstrong, IL
The month with the highest snowfall is February (2.32").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Armstrong, IL
- Average snowfall days in January:
9.8 days - Average snowfall days in February:
8.8 days - Average snowfall days in March:
4.4 days - Average snowfall days in April:
1.1 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:
0.2 days - Average snowfall days in November:
1.9 days - Average snowfall days in December:
8 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Armstrong, 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:
10h and 0min - 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 24min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 1min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 4min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 4min - Average sunshine in October:
6h and 1min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days
Armstrong, IL
- Average sunshine days in January:
15.9 days - Average sunshine days in February:
13.3 days - Average sunshine days in March:
15.1 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
10.4 days - Average sunshine days in June:
10.7 days
- Average sunshine days in July:
9.5 days - Average sunshine days in August:
12.1 days - Average sunshine days in September:
15.3 days - Average sunshine days in October:
17.1 days - Average sunshine days in November:
18.7 days - Average sunshine days in December:
15.9 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is July (9.5 days).
Average UV index
Armstrong, IL
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Armstrong, IL
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are June, August and September (Cloud cover 33).
Average visibility
Armstrong, 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).
Armstrong, Illinois, USA
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