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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 Isom, West Virginia, with temperature in the range of an average high of 39.7°F (4.3°C) and an average low of 26.1°F (-3.3°C). January is the month when Isom experiences its coldest temperatures, averaging a high of 39.7°F (4.3°C) and a low of 26.1°F (-3.3°C). Weather in January »
Weather in February
February, the last month of the winter in Isom, is a frosty month, with an average temperature fluctuating between 29.7°F (-1.3°C) and 44.2°F (6.8°C). February records an average high-temperature of a chilly 44.2°F (6.8°C), indicating a minor variation from the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is a cool month in Isom, West Virginia, with an average temperature varying between 53.4°F (11.9°C) and 36.7°F (2.6°C). Isom's transition into March brings a rise in the average high-temperature, moving from a chilly 44.2°F (6.8°C) in February to a fresh 53.4°F (11.9°C). Weather in March »
Weather in April
April is a refreshing spring month in Isom, West Virginia, with temperature in the range of an average low of 45.5°F (7.5°C) and an average high of 65.5°F (18.6°C). As March transitions into April, a change in temperatures is observed, with average highs moving from a cool 53.4°F (11.9°C) to a refreshing 65.5°F (18.6°C). Weather in April »
Weather in May
May, the last month of the spring in Isom, is a warm month, with an average temperature fluctuating between 75.2°F (24°C) and 53.6°F (12°C). Isom sees a rise in temperature during May, with average high-temperatures transitioning from a comfortable 65.5°F (18.6°C) in April to a warm 75.2°F (24°C). Weather in May »
Weather in June
The first month of the summer, June, is also a moderately hot month in Isom, West Virginia, with an average temperature varying between 82.4°F (28°C) and 59°F (15°C). June's arrival coincides with a subtle temperature rise, moving from May's 75.2°F (24°C) to a still warm 82.4°F (28°C). Weather in June »
Weather in July
July, like June, in Isom, West Virginia, is another warm summer month, with an average temperature fluctuating between 62.4°F (16.9°C) and 85.8°F (29.9°C). July stands out as Isom's warmest month, with an average high-temperature of 85.8°F (29.9°C) and a low-temperature of 62.4°F (16.9°C). The heat index value for July is appraised at a very hot 96.8°F (36°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Isom, West Virginia, with an average temperature varying between 60.6°F (15.9°C) and 84.7°F (29.3°C). The arrival of August brings an average high-temperature of a still warm 84.7°F (29.3°C), closely following the temperature pattern of July. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Isom, West Virginia, with temperature in the range of an average high of 78.1°F (25.6°C) and an average low of 56.3°F (13.5°C). September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's 84.7°F (29.3°C) to a still warm 78.1°F (25.6°C). Weather in September »
Weather in October
October, like September, in Isom, West Virginia, is another enjoyable autumn month, with temperature in the range of an average high of 65.5°F (18.6°C) and an average low of 46.8°F (8.2°C). October is characterized by a reduction in the average high-temperature, from a moderately hot 78.1°F (25.6°C) in September to a refreshing 65.5°F (18.6°C). Weather in October »
Weather in November
November, the last month of the autumn in Isom, is also a fresh month, with an average temperature varying between 36.9°F (2.7°C) and 53.2°F (11.8°C). The arrival of November signals a shift in temperature, down from a comfortable 65.5°F (18.6°C) in October to a fresh 53.2°F (11.8°C). Weather in November »
Weather in December
The first month of the winter, December, is also a frosty month in Isom, West Virginia, with an average temperature varying between 45°F (7.2°C) and 32.7°F (0.4°C). December signifies a gentle decline in Isom's average high-temperature, easing from a fresh 53.2°F (11.8°C) in November to a chilly 45°F (7.2°C). Weather in December »
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Isom?
The coldest period is January, when temperatures fluctuate between an average high of 39.7°F (4.3°C) and a low of 26.1°F (-3.3°C).
How much does it rain in Isom?
Throughout the year, in Isom, West Virginia, there are 181.3 rainfall days, and 34.37" (873mm) of precipitation is accumulated.
When does it snow in Isom?
Months with snowfall in Isom are January through May, October through December.
What is the snowiest month in Isom?
The month with the most snowfall in Isom is January, when snow falls for 11.6 days and typically aggregates up to 4.53" (115mm) of snow.
How many days does it snow in Isom?
Throughout the year, in Isom, there are 38.9 snowfall days, and 17.48" (444mm) of snow is accumulated.
What is the month with the least sunshine in Isom?
With an average of 3.8h of sunshine, January has the least sunshine of the year in Isom, West Virginia.
When is the lowest UV index in Isom?
The months with the lowest UV index in Isom are January, February and December, with an average maximum UV index of 2.
What is the most humid month in Isom?
February is the most humid month, with an average relative humidity of 82%.
When is Daylight Saving Time (DST) in Isom?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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 least humid month in Isom?
April, June through August and November, with an average relative humidity of 76%, are the least humid months.
What is the rainiest month in Isom?
May is the month with the most rainfall. Rain falls for 20.2 days and accumulates 3.74" (95mm) of precipitation.
When is the highest UV index in Isom?
The months with the highest UV index in Isom, West Virginia, are May through August, with an average maximum UV index of 6.
When it does not snow in Isom?
June through September are months without snowfall in Isom, West Virginia.
When are the longest days in Isom?
The month with the longest days is June, with an average of 14h and 48min of daylight.
What part of the year is the hottest in Isom?
The temperatures reach their highest averages in July, with highs of 85.8°F (29.9°C) and lows of 62.4°F (16.9°C).
What month has the most sunshine in Isom?
August has the most sunshine of the year in Isom, with an average of 10.2h of sunshine.
What is the driest month in Isom?
September is the month with the least rainfall in Isom, West Virginia. Rain falls for 13.5 days and accumulates 1.85" (47mm) of precipitation.
What is the month with the shortest days in Isom?
With an average of 9h and 36min of daylight, December has the shortest days of the year in Isom, West Virginia.
Average temperature
Isom, WV
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (39.7°F).
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure
Isom, 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:
30.02"Hg - Average pressure in June:
29.98"Hg
- Average pressure in July:
30.01"Hg - Average pressure in August:
30.02"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.06"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 (29.98"Hg).
Average wind speed
Isom, WV
- Average wind speed in January:
6.5mph - Average wind speed in February:
6.5mph - Average wind speed in March:
6.3mph - Average wind speed in April:
6.5mph - Average wind speed in May:
5.5mph - Average wind speed in June:
4.9mph
- Average wind speed in July:
4.4mph - Average wind speed in August:
4mph - Average wind speed in September:
4.2mph - Average wind speed in October:
4.9mph - Average wind speed in November:
5.4mph - Average wind speed in December:
6mph
The windiest months (with the highest average wind speed) are January, February and April (6.5mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity
Isom, WV
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April, June, July, August and November (76%).
Average rainfall
Isom, WV
- Average rainfall in January:
2.72" - Average rainfall in February:
3.5" - Average rainfall in March:
3.19" - Average rainfall in April:
3.03" - Average rainfall in May:
3.74" - Average rainfall in June:
3.27"
- Average rainfall in July:
2.76" - Average rainfall in August:
2.05" - Average rainfall in September:
1.85" - Average rainfall in October:
2.8" - Average rainfall in November:
2.24" - Average rainfall in December:
3.23"
The wettest month (with the highest rainfall) is May (3.74").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days
Isom, WV
- Average rainfall days in January:
12.4 days - Average rainfall days in February:
12.8 days - Average rainfall days in March:
16.8 days - Average rainfall days in April:
18.1 days - Average rainfall days in May:
20.2 days - Average rainfall days in June:
17.1 days
- Average rainfall days in July:
17.8 days - Average rainfall days in August:
15.7 days - Average rainfall days in September:
13.5 days - Average rainfall days in October:
12.4 days - Average rainfall days in November:
10.8 days - Average rainfall days in December:
13.7 days
The month with the highest number of rainy days is May (20.2 days).
The month with the least rainy days is November (10.8 days).
Average snowfall
Isom, WV
- Average snowfall in January:
4.53" - Average snowfall in February:
4.29" - Average snowfall in March:
2.52" - Average snowfall in April:
0.24" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is January (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Isom, WV
- Average snowfall days in January:
11.6 days - Average snowfall days in February:
9.9 days - Average snowfall days in March:
5.7 days - Average snowfall days in April:
0.8 days - Average snowfall days in May:
0.2 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:
0.5 days - Average snowfall days in November:
2.6 days - Average snowfall days in December:
7.6 days
The month with the highest number of snowfall days is January (11.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Isom, 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 5min
- 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 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 0min - Average sunshine in April:
8h and 1min - Average sunshine in May:
9h and 0min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 1min - Average sunshine in October:
6h and 1min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Isom, WV
- Average sunshine days in January:
10.4 days - Average sunshine days in February:
8.8 days - Average sunshine days in March:
10.3 days - Average sunshine days in April:
10.6 days - Average sunshine days in May:
9.7 days - Average sunshine days in June:
11 days
- Average sunshine days in July:
11.8 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
13.6 days - Average sunshine days in October:
17 days - Average sunshine days in November:
17 days - Average sunshine days in December:
11.5 days
The months with the most sunshine days are October and November (17 days).
The month with the least sunshine days is February (8.8 days).
Average UV index
Isom, WV
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
Isom, WV
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility
Isom, 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).
Isom, West Virginia, USA
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