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
The introduction of February notes a subtle temperature variation to a still subzero cold 31.5°F (-0.3°C) from January's 31.1°F (-0.5°C). An average temperature of 16.2°F (-8.8°C) marks the nights in Keystone, South Dakota, in February.Humidity
January and February, with an average relative humidity of 77%, are the most humid months.Rainfall
In Keystone, in February, it is raining for 6.3 days, with typically 0.83" (21mm) of accumulated precipitation. Throughout the year, in Keystone, South Dakota, there are 135.4 rainfall days, and 20.39" (518mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall in Keystone. In Keystone, during February, snow falls for 12.9 days and regularly aggregates up to 5.71" (145mm) of snow. Throughout the year, there are 75.1 snowfall days, and 40.24" (1022mm) of snow is accumulated.Daylight
In February, the average length of the day is 10h and 31min.On the first day of February, sunrise is at 7:10 am and sunset at 5:03 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 5:41 pm MST.
Sunshine
February has the least sunshine of the year, with an average of 6h of sunshine.UV index
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In February, an average UV index of 2 transforms into the following instructions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Frequently asked questions
How cold is February in Keystone?
What is the most humid month in Keystone?
What is the average humidity in February in Keystone?
How many days does it rain in February in Keystone?
How much does it snow in Keystone in February?
How many hours of daylight does Keystone have in February?
What time are sunrise and sunset in February in Keystone?
What is the month with the least sunshine in Keystone?
How long on average sun shines in February in Keystone?
What is the month with the lowest UV index in Keystone?
How high is the UV index in February in Keystone?
Average temperature in February
Keystone, SD
- Average high temperature in February: 31.5°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (29.8°F).
- Average low temperature in February: 16.2°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is February (16.2°F).
Average pressure in February
Keystone, SD
- Average pressure in February: 30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in February
Keystone, SD
- Average wind speed in February: 8.8mph
The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in February
Keystone, SD
- Average humidity in February: 77%
The months with the highest relative humidity are January and February (77%).
The months with the lowest relative humidity are August and September (52%).
Average rainfall in February
Keystone, SD
- Average rainfall in February: 0.83"
The wettest month (with the highest rainfall) is June (3.19").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in February
Keystone, SD
- Average rainfall days in February: 6.3 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is November (4.5 days).
Average snowfall in February
Keystone, SD
- Average snowfall in February: 5.71"
The month with the highest snowfall is April (7.24").
The months with the least snowfall are June, July and August (0").
Average snowfall days in February
Keystone, SD
- Average snowfall days in February: 12.9 days
The month with the highest number of snowfall days is February (12.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in February /
Average sunshine in February
Keystone, SD
- Average daylight in February: 10h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in February: 6h and 0min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 0min).
Average sunshine days in February
Keystone, SD
- Average sunshine days in February: 13.8 days
The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is May (7.8 days).
Average UV index in February
Keystone, SD
- Average UV index in February: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in February
Keystone, SD
- Average cloud cover in February: 37
The month with the most cloud cover is April (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in February
Keystone, SD
- 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).
Keystone, South Dakota, USA
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