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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, in Alto Pass, Illinois, is an icy winter month, with an average temperature varying between 39.7°F (4.3°C) and 26.8°F (-2.9°C). With average high temperatures of 39.7°F (4.3°C) and lows of 26.8°F (-2.9°C), January is the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is a chilly month in Alto Pass, Illinois, with an average temperature varying between 44.6°F (7°C) and 30.4°F (-0.9°C). As Alto Pass steps into February, the average high-temperature is measured at a frosty 44.6°F (7°C), displaying minor differences from January's 39.7°F (4.3°C). Weather in February »
Weather in March
March, the first month of the spring in Alto Pass, is a moderate month, with an average temperature varying between 55.6°F (13.1°C) and 39.4°F (4.1°C). As Alto Pass enters March, the average high-temperature increases from the a frosty 44.6°F (7°C) of February to a refreshing 55.6°F (13.1°C). Weather in March »
Weather in April
April is a comfortable spring month in Alto Pass, Illinois, with temperature in the range of an average low of 48.9°F (9.4°C) and an average high of 66.6°F (19.2°C). April's onset witnesses a shift in the average high-temperature, moving from a refreshing 55.6°F (13.1°C) in March to an enjoyable 66.6°F (19.2°C). Weather in April »
Weather in May
The last month of the spring, May, is a warm month in Alto Pass, Illinois, with temperature in the range of an average high of 75.7°F (24.3°C) and an average low of 58.1°F (14.5°C). Alto Pass's transition into May brings a rise in the average high-temperature, moving from a refreshing 66.6°F (19.2°C) in April to a warm 75.7°F (24.3°C). Weather in May »
Weather in June
The first month of the summer, June, is still a warm month in Alto Pass, Illinois, with temperature in the range of an average low of 66.2°F (19°C) and an average high of 85.6°F (29.8°C). Alto Pass's transition into June is marked by a rise in the average high-temperature, advancing from 75.7°F (24.3°C) in May to a still warm 85.6°F (29.8°C). Weather in June »
Weather in July
July is a tropical summer month in Alto Pass, Illinois, with temperature in the range of an average high of 88.3°F (31.3°C) and an average low of 69.1°F (20.6°C). Alto Pass registers the highest average temperatures during the month of July, with peaks of 88.3°F (31.3°C) and lows of 69.1°F (20.6°C). The heat index in July is appraised at a scorching 104°F (40°C). Weather in July »
Weather in August
August, the last month of the summer in Alto Pass, is another hot month, with an average temperature fluctuating between 86.5°F (30.3°C) and 66.7°F (19.3°C). Alto Pass registers an average high-temperature of a still hot 86.5°F (30.3°C) at the commencement of August, closely related to the preceding month. Weather in August »
Weather in September
September, the first month of the autumn in Alto Pass, is also a moderately hot month, with an average temperature ranging between min 60.6°F (15.9°C) and max 81°F (27.2°C). In Alto Pass, entering September brings a subtle temperature decrement, reducing from August's tropical 86.5°F (30.3°C) to a warm 81°F (27.2°C). Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Alto Pass, Illinois, with an average temperature fluctuating between 49.5°F (9.7°C) and 67.8°F (19.9°C). October involves a decrease in temperature, down from a warm 81°F (27.2°C) in September to a refreshing 67.8°F (19.9°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a fresh month in Alto Pass, Illinois, with temperature in the range of an average high of 54.5°F (12.5°C) and an average low of 38.7°F (3.7°C). As Alto Pass enters November, the average high-temperature decreases from the an enjoyable 67.8°F (19.9°C) of October to a cool 54.5°F (12.5°C). Weather in November »
Weather in December
December, the first month of the winter in Alto Pass, is still a chilly month, with an average temperature ranging between min 32.2°F (0.1°C) and max 44.8°F (7.1°C). Onset of December comes with a temperature decline, the average high falling from a cool 54.5°F (12.5°C) in November to a chilly 44.8°F (7.1°C). Weather in December »
[Resources]Frequently asked questions
What are the coldest months in Alto Pass?
January stands out as Alto Pass's coldest month, with an average high-temperature of 39.7°F (4.3°C) and a low-temperature of 26.8°F (-2.9°C).
How much does it rain in Alto Pass?
In Alto Pass, during the entire year, the rain falls for 143 days and collects up to 27.44" (697mm) of precipitation.
When does it snow in Alto Pass?
January through April, October through December are months with snowfall in Alto Pass.
How much does it snow in Alto Pass?
In Alto Pass, during the entire year, snow falls for 14.9 days and aggregates up to 6.06" (154mm) of snow.
What are the months with the least sunshine in Alto Pass?
The months with the least sunshine are January and February, with an average of 4.6h of sunshine.
What are the months with the lowest UV index in Alto Pass?
The months with the lowest UV index in Alto Pass, Illinois, are January, February and December, with an average maximum UV index of 2.
When does it snow the most in Alto Pass?
The month with the most snowfall is February, when snow falls for 3.9 days and typically aggregates up to 1.89" (48mm) of snow.
When is Daylight Saving Time (DST) in Alto Pass?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Alto Pass, 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 Alto Pass?
April is the month with the most rainfall in Alto Pass. Rain falls for 13.4 days and accumulates 3.31" (84mm) of precipitation.
What is the most humid month in Alto Pass?
May is the most humid month, with an average relative humidity of 79%.
When it does not snow in Alto Pass?
May through September are months without snowfall.
When is the highest UV index in Alto Pass?
May through August, with an average maximum UV index of 6, are months with the highest UV index in Alto Pass.
When are the longest days in Alto Pass?
The month with the longest days in Alto Pass, Illinois, is June, with an average of 14h and 42min of daylight.
What month is the hottest in Alto Pass?
July is Alto Pass's warmest month, registering average high temperatures of 88.3°F (31.3°C) and lows of 69.1°F (20.6°C).
What month has the most sunshine in Alto Pass?
July has the most sunshine of the year in Alto Pass, with an average of 10.4h of sunshine.
What is the driest month in Alto Pass?
The month with the least rainfall in Alto Pass, Illinois, is September, when the rain falls for 10.8 days and typically collects 1.3" (33mm) of precipitation.
What is the least humid month in Alto Pass?
October is the least humid month, with an average relative humidity of 71%.
What is the month with the shortest days in Alto Pass?
December has the shortest days of the year in Alto Pass, with an average of 9h and 36min of daylight.
Average temperature
Alto Pass, 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 (39.7°F).
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure
Alto Pass, IL
- Average pressure in January:
30.16"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:
29.97"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Alto Pass, IL
- Average wind speed in January:
9mph - Average wind speed in February:
8.9mph - Average wind speed in March:
8.8mph - Average wind speed in April:
8.8mph - Average wind speed in May:
7.3mph - Average wind speed in June:
6.3mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.6mph - Average wind speed in September:
6.2mph - Average wind speed in October:
7.6mph - Average wind speed in November:
8.3mph - Average wind speed in December:
8.5mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity
Alto Pass, IL
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Alto Pass, IL
- Average rainfall in January:
1.57" - Average rainfall in February:
2.24" - Average rainfall in March:
2.48" - Average rainfall in April:
3.31" - Average rainfall in May:
2.95" - Average rainfall in June:
2.87"
- Average rainfall in July:
2.48" - Average rainfall in August:
2.44" - Average rainfall in September:
1.3" - Average rainfall in October:
2.01" - Average rainfall in November:
1.97" - Average rainfall in December:
1.81"
The wettest month (with the highest rainfall) is April (3.31").
The driest month (with the least rainfall) is September (1.3").
Average rainfall days
Alto Pass, IL
- Average rainfall days in January:
8.4 days - Average rainfall days in February:
9.6 days - Average rainfall days in March:
14.1 days - Average rainfall days in April:
13.4 days - Average rainfall days in May:
14.9 days - Average rainfall days in June:
14.6 days
- Average rainfall days in July:
15.9 days - Average rainfall days in August:
14.8 days - Average rainfall days in September:
10.8 days - Average rainfall days in October:
8.7 days - Average rainfall days in November:
8.6 days - Average rainfall days in December:
9.2 days
The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is January (8.4 days).
Average snowfall
Alto Pass, IL
The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Alto Pass, IL
- Average snowfall days in January:
4.6 days - Average snowfall days in February:
3.9 days - Average snowfall days in March:
2.2 days - Average snowfall days in April:
0.4 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:
2.6 days
The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Alto Pass, IL
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 1min - Average daylight in June:
14h and 4min
- Average daylight in July:
14h and 3min - 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 1min - Average daylight in December:
9h and 4min
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 4min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 1min - Average sunshine in April:
8h and 3min - Average sunshine in May:
9h and 1min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 1min - Average sunshine in September:
9h and 3min - Average sunshine in October:
6h and 3min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days
Alto Pass, IL
- Average sunshine days in January:
18.6 days - Average sunshine days in February:
14.7 days - Average sunshine days in March:
14.4 days - Average sunshine days in April:
14.5 days - Average sunshine days in May:
13.8 days - Average sunshine days in June:
13 days
- Average sunshine days in July:
12.8 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
17.5 days - Average sunshine days in October:
21 days - Average sunshine days in November:
19.7 days - Average sunshine days in December:
19.6 days
The month with the most sunshine days is October (21 days).
The month with the least sunshine days is July (12.8 days).
Average UV index
Alto Pass, 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
Alto Pass, IL
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is September (Cloud cover 28).
Average visibility
Alto Pass, 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).
Alto Pass, Illinois, USA
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