Contents
- Weather in February
- Frequently asked questions
- Average temperature in February
- Average pressure in February
- Average wind speed in February
- Average humidity in February
- Average rainfall in February
- Average rainfall days in February
- Average snowfall in February
- Average snowfall days in February
- Average daylight in February
- Average sunshine in February
- Average sunshine days in February
- Average UV index in February
- Average cloud cover in February
- Average visibility in February
Weather in February
Temperature
Alton registers an average high-temperature of a still icy 40.8°F (4.9°C) at the commencement of February, closely related to the preceding month. Throughout February, an average nighttime temperature of 26.8°F (-2.9°C) is experienced.Humidity
In February, the average relative humidity is 77%.Rainfall
February is the month with the least rainfall. Rain falls for 6 days and accumulates 0.83" (21mm) of precipitation.Snowfall
January through March, November and December are months with snowfall in Alton. The month with the most snowfall is February, when snow falls for 5.2 days and typically aggregates up to 1.14" (29mm) of snow.Daylight
In February, the average length of the day in Alton is 10h and 46min.On the first day of February, sunrise is at 7:06 am and sunset at 5:21 pm. On the last day of the month, sunrise is at 6:33 am and sunset at 5:52 pm CST.
Sunshine
January and February, with an average of 4.5h of sunshine, are months with the least sunshine in Alton.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 2 in February interprets into the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is February cold in Alton?
What is the average humidity in February in Alton?
What is the driest month in Alton?
How many days does it rain in February in Alton?
When does it snow the most in Alton?
How much does it snow in Alton in February?
How many hours of daylight does Alton have in February?
What time are sunrise and sunset in February in Alton?
What are the months with the least sunshine in Alton?
How long on average sun shines in February in Alton?
What is the month with the lowest UV index in Alton?
What is the UV index intensity in February in Alton?
Average temperature in February
Alton, IL
- Average high temperature in February: 40.8°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in February: 26.8°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in February
Alton, IL
- Average pressure in February: 30.12"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in February
Alton, IL
- Average wind speed in February: 9.5mph
The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).
Average humidity in February
Alton, IL
- Average humidity in February: 77%
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in February
Alton, IL
- Average rainfall in February: 0.83"
The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is February (0.83").
Average rainfall days in February
Alton, IL
- Average rainfall days in February: 6 days
The month with the highest number of rainy days is July (15.4 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in February
Alton, IL
- Average snowfall in February: 1.14"
The month with the highest snowfall is February (1.14").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in February
Alton, IL
- Average snowfall days in February: 5.2 days
The month with the highest number of snowfall days is January (5.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in February /
Average sunshine in February
Alton, IL
- Average daylight in February: 10h and 5min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in February: 4h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 30min).
Average sunshine days in February
Alton, IL
- Average sunshine days in February: 17 days
The month with the most sunshine days is December (21 days).
The month with the least sunshine days is June (12.6 days).
Average UV index in February
Alton, IL
- Average UV index in February: 2
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 in February
Alton, IL
- Average cloud cover in February: 51
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in February
Alton, IL
- Average visibility in February: 6mi
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).
Alton, Illinois, USA
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