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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, is a wintry winter month in Keystone, West Virginia, with temperature in the range of an average high of 39.2°F (4°C) and an average low of 25°F (-3.9°C). January is the coldest month, with an average high-temperature of 39.2°F (4°C) and an average low-temperature of 25°F (-3.9°C). Weather in January »
Weather in February
The last month of the winter, February, is a chilly month in Keystone, West Virginia, with an average temperature varying between 43.9°F (6.6°C) and 28.2°F (-2.1°C). As Keystone welcomes February, the average high-temperature records at a chilly 43.9°F (6.6°C), marking an insignificant deviation from the prior month. Weather in February »
Weather in March
The first month of the spring, March, is a fresh month in Keystone, West Virginia, with an average temperature varying between 51.8°F (11°C) and 35.1°F (1.7°C). The onset of March marks a slight increase in the average high-temperature, moving from a chilly 43.9°F (6.6°C) in February to a cool 51.8°F (11°C). Weather in March »
Weather in April
April in Keystone, West Virginia, is a comfortable spring month, with temperature in the range of an average low of 43.9°F (6.6°C) and an average high of 63.7°F (17.6°C). April's arrival brings a change in high-temperatures, moving from a cool 51.8°F (11°C) in March to an enjoyable 63.7°F (17.6°C). Weather in April »
Weather in May
May, the last month of the spring in Keystone, is a pleasant month, with temperature in the range of an average high of 72.9°F (22.7°C) and an average low of 52.2°F (11.2°C). May brings a rise in Keystone's average high-temperature, moving from a refreshing 63.7°F (17.6°C) in April to a pleasant 72.9°F (22.7°C). Weather in May »
Weather in June
June, the first month of the summer in Keystone, is a warm month, with an average temperature ranging between min 57°F (13.9°C) and max 80.2°F (26.8°C). June's arrival coincides with a subtle temperature rise, moving from May's pleasant 72.9°F (22.7°C) to a moderately hot 80.2°F (26.8°C). Weather in June »
Weather in July
July, like June, in Keystone, West Virginia, is another warm summer month, with an average temperature ranging between max 83.5°F (28.6°C) and min 60.3°F (15.7°C). July brings the highest temperatures, with an average high of 83.5°F (28.6°C) and an average low of 60.3°F (15.7°C). For July, the heat index is appraised at a hot 91.4°F (33°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Keystone, West Virginia, with temperature in the range of an average high of 82°F (27.8°C) and an average low of 58.5°F (14.7°C). The arrival of August sees a recorded average high-temperature of a still warm 82°F (27.8°C), showing little divergence from the previous month's conditions. Weather in August »
Weather in September
September, the first month of the autumn in Keystone, is also a moderately hot month, with an average temperature varying between 54.1°F (12.3°C) and 76.3°F (24.6°C). The arrival of September suggests a slight decrease in the average high-temperature, moving from 82°F (27.8°C) in August to a still warm 76.3°F (24.6°C). Weather in September »
Weather in October
October, like September, in Keystone, West Virginia, is another comfortable autumn month, with an average temperature varying between 45.1°F (7.3°C) and 64.2°F (17.9°C). October weather is marked by a drop in the average high-temperature, falling from a moderately hot 76.3°F (24.6°C) in September to an enjoyable 64.2°F (17.9°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a fresh month in Keystone, West Virginia, with an average temperature fluctuating between 34.9°F (1.6°C) and 52.5°F (11.4°C). The transition into November indicates a reduction in the average high-temperature, down to a cool 52.5°F (11.4°C) from October's enjoyable 64.2°F (17.9°C). Weather in November »
Weather in December
December, the first month of the winter in Keystone, is still a chilly month, with an average temperature varying between 31.1°F (-0.5°C) and 44.4°F (6.9°C). The beginning of December brings a minor change in the average high-temperature, shifting from a fresh 52.5°F (11.4°C) in November to a chilly 44.4°F (6.9°C). Weather in December »
[Resources]Frequently asked questions
What part of the year is the coldest in Keystone?
The month of January sees the average lowest temperatures in Keystone, West Virginia, reaching 39.2°F (4°C) at the peak and 25°F (-3.9°C) at the low.
How many days does it rain in Keystone?
Throughout the year, there are 172.5 rainfall days, and 29.41" (747mm) of precipitation is accumulated.
When does it snow in Keystone?
Months with snowfall are January through May, October through December.
How much does it snow in Keystone?
In Keystone, West Virginia, during the entire year, snow falls for 38.6 days and aggregates up to 20" (508mm) of snow.
What is the month with the least sunshine in Keystone?
With an average of 4.2h of sunshine, January has the least sunshine of the year in Keystone, West Virginia.
When is the lowest UV index in Keystone?
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2.
What is the most humid month in Keystone?
With an average relative humidity of 82%, February is the most humid month in Keystone, West Virginia.
When is Daylight Saving Time (DST) in Keystone?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Keystone, West Virginia, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
What is the rainiest month in Keystone?
The month with the most rainfall is May, when the rain falls for 19.7 days and typically aggregates up to 3.19" (81mm) of precipitation.
When it does not snow in Keystone?
June through September are months without snowfall in Keystone.
When are the longest days in Keystone?
June has the longest days of the year in Keystone, West Virginia, with an average of 14h and 42min of daylight.
When is the highest UV index in Keystone?
The months with the highest UV index in Keystone are June and August, with an average maximum UV index of 6.
What time of the year is the hottest in Keystone?
July, on average, is the warmest month, registering a high temperature of 83.5°F (28.6°C) and a low of 60.3°F (15.7°C).
What is the least humid month in Keystone?
July, August and November, with an average relative humidity of 76%, are the least humid months.
What month has the most sunshine in Keystone?
August has the most sunshine of the year, with an average of 10.1h of sunshine.
What is the driest month in Keystone?
September is the month with the least rainfall in Keystone. Rain falls for 15.2 days and accumulates 1.54" (39mm) of precipitation.
What is the snowiest month in Keystone?
December is the month with the most snowfall in Keystone, West Virginia. Snow falls for 7.8 days and accumulates 4.41" (112mm) of snow.
What is the month with the shortest days in Keystone?
With an average of 9h and 36min of daylight, December has the shortest days of the year.
Average temperature
Keystone, WV
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (39.2°F).
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure
Keystone, WV
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.1"Hg - Average pressure in April:
30"Hg - Average pressure in May:
30.03"Hg - Average pressure in June:
29.99"Hg
- Average pressure in July:
30.02"Hg - Average pressure in August:
30.03"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.07"Hg - Average pressure in November:
30.16"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed
Keystone, WV
- Average wind speed in January:
7.3mph - Average wind speed in February:
7.1mph - Average wind speed in March:
6.8mph - Average wind speed in April:
7.1mph - Average wind speed in May:
5.9mph - Average wind speed in June:
5.2mph
- Average wind speed in July:
4.6mph - Average wind speed in August:
4.2mph - Average wind speed in September:
4.5mph - Average wind speed in October:
5.4mph - Average wind speed in November:
5.8mph - Average wind speed in December:
6.5mph
The windiest month (with the highest average wind speed) is January (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity
Keystone, WV
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are July, August and November (76%).
Average rainfall
Keystone, WV
- Average rainfall in January:
2.17" - Average rainfall in February:
2.99" - Average rainfall in March:
2.36" - Average rainfall in April:
2.68" - Average rainfall in May:
3.19" - Average rainfall in June:
2.48"
The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days
Keystone, WV
- Average rainfall days in January:
10.1 days - Average rainfall days in February:
10.6 days - Average rainfall days in March:
13.8 days - Average rainfall days in April:
16.3 days - Average rainfall days in May:
19.7 days - Average rainfall days in June:
17.6 days
- Average rainfall days in July:
19.1 days - Average rainfall days in August:
16.1 days - Average rainfall days in September:
15.2 days - Average rainfall days in October:
12.3 days - Average rainfall days in November:
10.1 days - Average rainfall days in December:
11.6 days
The month with the highest number of rainy days is May (19.7 days).
The months with the least rainy days are January and November (10.1 days).
Average snowfall
Keystone, WV
- Average snowfall in January:
4.25" - Average snowfall in February:
4.33" - Average snowfall in March:
3.39" - Average snowfall in April:
1.06" - Average snowfall in May:
0.39" - Average snowfall in June:
0"
The month with the highest snowfall is December (4.41").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Keystone, WV
- Average snowfall days in January:
10.5 days - Average snowfall days in February:
8.8 days - Average snowfall days in March:
5.5 days - Average snowfall days in April:
1.6 days - Average snowfall days in May:
0.3 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:
0.9 days - Average snowfall days in November:
3.2 days - Average snowfall days in December:
7.8 days
The month with the highest number of snowfall days is January (10.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Keystone, WV
- 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 2min - 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 1min - Average sunshine in February:
5h and 1min - Average sunshine in March:
6h and 1min - Average sunshine in April:
8h and 2min - Average sunshine in May:
9h and 1min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 2min - Average sunshine in October:
6h and 1min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days
Keystone, WV
- Average sunshine days in January:
12.4 days - Average sunshine days in February:
10.8 days - Average sunshine days in March:
12.8 days - Average sunshine days in April:
12 days - Average sunshine days in May:
9.2 days - Average sunshine days in June:
10.8 days
- Average sunshine days in July:
9.6 days - Average sunshine days in August:
12.2 days - Average sunshine days in September:
11.8 days - Average sunshine days in October:
16.5 days - Average sunshine days in November:
17.9 days - Average sunshine days in December:
13.8 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is May (9.2 days).
Average UV index
Keystone, WV
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover
Keystone, WV
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are June and August (Cloud cover 36).
Average visibility
Keystone, WV
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Keystone, West Virginia, USA
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