January weather forecast
Isom, WV

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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).

Temperature

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).

Humidity

In January, the average relative humidity is 81%.

Rainfall

In Isom, in January, it is raining for 12.4 days, with typically 2.72" (69mm) of accumulated precipitation. In Isom, during the entire year, the rain falls for 181.3 days and collects up to 34.37" (873mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. January is the month with the most snowfall in Isom. Snow falls for 11.6 days and accumulates 4.53" (115mm) of snow.

Daylight

In January, the average length of the day is 9h and 53min.
On the first day of the month, sunrise is at 7:43 am and sunset at 5:18 pm. On the last day of January, sunrise is at 7:32 am and sunset at 5:49 pm EST.

Sunshine

The month with the least sunshine in Isom is January, with an average of 3.8h of sunshine.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: In January, an average UV index of 2 transforms into the following instructions:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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Frequently asked questions

What is the coldest time of year in Isom?

The coldest period in Isom 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 cold does it get in Isom in January?

Isom in January has an average high-temperature of 39.7°F (4.3°C) and an average low-temperature of 26.1°F (-3.3°C).

What is the average humidity in January in Isom?

The average relative humidity in January is 81%.

How much does it rain in Isom in January?

In January, in Isom, the rain falls for 12.4 days. Throughout January, 2.72" (69mm) of precipitation is accumulated.

What is the snowiest month in Isom?

The month with the most snowfall is January, when snow falls for 11.6 days and typically aggregates up to 4.53" (115mm) of snow.

How much does it snow in Isom in January?

In Isom, during January, snow falls for 11.6 days and regularly aggregates up to 4.53" (115mm) of snow.

What is the average length of the day in January in Isom?

The average day length in January in Isom, West Virginia, is 9h and 53min.

When are sunrise and sunset in January in Isom?

On the first day of January in Isom, sunrise is at 7:43 am and sunset at 5:18 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:49 pm EST.

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.

How long on average sun shines in January in Isom?

In January, the average sunshine duration in Isom, West Virginia, is 3.8h.

When is the lowest UV index in Isom?

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2.

How high is the UV index in January in Isom?

The average daily maximum UV index in January in Isom is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
45°F 7.2°C
39.7°F 4.3°C
44.2°F 6.8°C
Average low temperature
32.7°F 0.4°C
26.1°F -3.3°C
29.7°F -1.3°C
Average pressure
30.14" 766mmHg
30.15" 766mmHg
30.11" 765mmHg
Average wind speed
6mph 9.7km/h
6.5mph 10.5km/h
6.5mph 10.5km/h
Average max. wind speed
6.4mph 10.3km/h
7mph 11.3km/h
7mph 11.3km/h
Average wind speed gusts
9.4mph 15.1km/h
10.1mph 16.3km/h
10.1mph 16.3km/h
Average humidity
81%
81%
82%
Average rainfall
3.23" 82mm
2.72" 69mm
3.5" 89mm
Average rainfall days
13.7
12.4
12.8
Average snowfall
3.58" 91mm
4.53" 115mm
4.29" 109mm
Average snowfall days
7.6
11.6
9.9
Average daylight
9h 4min
9h 5min
10h 5min
Average sunshine
4h 2min
3h 5min
4h 4min
Average sunshine days
11.5
10.4
8.8
Average UV index
2
2
2
Average cloud cover
57%
62%
60%
Average visibility
5mi 8km
5mi 8km
5mi 8km

Average temperature in January
Isom, WV

Average temperature in January - Isom, WV
  • Average high temperature in January: 39.7°F

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).

  • Average low temperature in January: 26.1°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).

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Average pressure in January
Isom, WV

Average pressure in January - Isom, WV
  • Average pressure in January: 30.15"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).

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Average wind speed in January
Isom, WV

Average wind speed in January - Isom, WV
  • Average wind speed in January: 6.5mph

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).

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Average humidity in January
Isom, WV

Average humidity in January - Isom, WV
  • Average humidity in January: 81%

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%).

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Average rainfall in January
Isom, WV

Average rainfall in January - Isom, WV
  • Average rainfall in January: 2.72"

The wettest month (with the highest rainfall) is May (3.74").
The driest month (with the least rainfall) is September (1.85").

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Average rainfall days in January
Isom, WV

Average rainfall days in January - Isom, WV
  • Average rainfall days in January: 12.4 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).

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Average snowfall in January
Isom, WV

Average snowfall in January - Isom, WV
  • Average snowfall in January: 4.53"

The month with the highest snowfall is January (4.53").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Isom, WV

Average snowfall days in January - Isom, WV
  • Average snowfall days in January: 11.6 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).

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Average daylight in January /
Average sunshine in January
Isom, WV

Average daylight in January / Average sunshine in January - Isom, WV
  • Average daylight in January: 9h and 5min

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

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).

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Average sunshine days in January
Isom, WV

Average sunshine days in January - Isom, WV
  • Average sunshine days in January: 10.4 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).

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Average UV index in January
Isom, WV

Average UV index in January - Isom, WV
  • Average UV index in January: 2

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).

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Average cloud cover in January
Isom, WV

Average cloud cover in January - Isom, WV
  • Average cloud cover in January: 62

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in January
Isom, WV

Average visibility in January - Isom, WV
  • Average visibility in January: 5mi

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).

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Isom, West Virginia, USA

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