February weather forecastKeystone, SD
February
Weather in February
The cold weather continues to dominate in Keystone throughout February, only slightly less harsh than in January. The second month is distinguished by the highest average snowfall of the year, with 5.71" (145mm) covering this North American city. Although the freezing temperatures persist, an additional hour of daylight starts to combat the winter gloom. The city maintains a high level of humidity during February, making the air rather moist. As February transitions into March, residents of Keystone can look forward to a noticeable growth in daylight hours and slightly milder temperatures.Temperature
February welcomes an average high-temperature of a still freezing cold 31.5°F (-0.3°C), not much different from the preceding month. February brings Keystone a consistent average low-temperature of 16.2°F (-8.8°C).Humidity
The months with the highest humidity are January and February, with an average relative humidity of 77%.Rainfall
In Keystone, in February, it is raining for 6.3 days, with typically 0.83" (21mm) of accumulated precipitation. In Keystone, during the entire year, the rain falls for 135.4 days and collects up to 20.39" (518mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. In Keystone, in February, snow falls for 12.9 days, with typically accumulated 5.71" (145mm) of snow. Throughout the year, there are 75.1 snowfall days, and 40.24" (1022mm) of snow is accumulated.Daylight
The average length of the day in February is 10h and 31min.On the first day of the month, sunrise is at 7:10 am and sunset at 5:03 pm. On the last day of February, sunrise is at 6:30 am and sunset at 5:41 pm MST.
Sunshine
With an average of 6h of sunshine, February has the least sunshine of the year.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 hazard from exposure to the Sun's UV rays for average individuals.Note: In February, the average maximum UV index of 2 translates into the following recommendations:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 30min
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).
