January weather forecast
Thor, IA

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Weather in January

January, like December, is another subzero cold winter month in Thor, Iowa, with an average temperature ranging between min 11.5°F (-11.4°C) and max 24.3°F (-4.3°C).

Temperature

Thor experiences its lowest temperatures in January, with an average peak of 24.3°F (-4.3°C) and a low of 11.5°F (-11.4°C).

Humidity

With an average relative humidity of 87%, January is the most humid month in Thor, Iowa.

Rainfall

January is the month with the least rainfall. Rain falls for 4.5 days and accumulates 0.94" (24mm) of precipitation.

Snowfall

Months with snowfall in Thor are January through May, October through December. In Thor, Iowa, during January, snow falls for 11.8 days and regularly aggregates up to 4.37" (111mm) of snow. In Thor, during the entire year, snow falls for 44 days and aggregates up to 17.44" (443mm) of snow.

Daylight

In January, the average length of the day is 9h and 28min.
On the first day of January in Thor, sunrise is at 7:46 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:27 pm CST.

Sunshine

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

UV index

January is the month with the lowest UV index in Thor, Iowa, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index of 1 during January leads to these instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
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Frequently asked questions

What month is the coldest in Thor?

Thor's coldest weather arrives in January, when temperatures average a high of 24.3°F (-4.3°C) and a low of 11.5°F (-11.4°C).

How cold is it in Thor in January?

The high-temperature during January is 24.3°F (-4.3°C) and the low-temperature is 11.5°F (-11.4°C).

What is the most humid month in Thor?

The most humid month in Thor, Iowa, is January, with an average relative humidity of 87%.

What is the average humidity in January in Thor?

In Thor, Iowa, the average relative humidity in January is 87%.

What is the driest month in Thor?

The month with the least rainfall in Thor is January, when the rain falls for 4.5 days and typically collects 0.94" (24mm) of precipitation.

How many days does it rain in January in Thor?

In Thor, Iowa, in January, during 4.5 rainfall days, 0.94" (24mm) of precipitation is typically accumulated.

How much does it snow in Thor in January?

In January, in Thor, it is snowing for 11.8 days. Throughout January, 4.37" (111mm) of snow is accumulated.

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

In Thor, the average day length in January is 9h and 28min.

When are sunrise and sunset in January in Thor?

On the first day of January in Thor, Iowa, sunrise is at 7:46 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:27 pm CST.

What is the month with the least sunshine in Thor?

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

How many hours of sunshine does Thor have in January?

In January, the average sunshine duration in Thor, Iowa, is 3.8h.

When is the lowest UV index in Thor?

January is the month with the lowest UV index in Thor, Iowa, with an average maximum UV index of 1.

How high is the UV index in January in Thor?

In Thor, the average daily maximum UV index in January is 1. A UV Index estimate 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
30°F -1.1°C
24.3°F -4.3°C
28.2°F -2.1°C
Average low temperature
19°F -7.2°C
11.5°F -11.4°C
15.1°F -9.4°C
Average pressure
30.12" 765mmHg
30.15" 766mmHg
30.14" 766mmHg
Average wind speed
10.4mph 16.7km/h
10.9mph 17.5km/h
10.7mph 17.2km/h
Average max. wind speed
11.1mph 17.9km/h
11.6mph 18.7km/h
11.4mph 18.3km/h
Average wind speed gusts
16.3mph 26.2km/h
17.1mph 27.5km/h
16.7mph 26.9km/h
Average humidity
83%
87%
84%
Average rainfall
1.26" 32mm
0.94" 24mm
1.14" 29mm
Average rainfall days
4.8
4.5
3.3
Average snowfall
3.03" 77mm
4.37" 111mm
4.76" 121mm
Average snowfall days
10.3
11.8
9.2
Average daylight
9h 1min
9h 3min
10h 4min
Average sunshine
4h 2min
3h 5min
4h 4min
Average sunshine days
17.7
17.1
15.9
Average UV index
2
1
2
Average cloud cover
55%
59%
54%
Average visibility
6mi 9.7km
5mi 8km
6mi 9.7km

Average temperature in January
Thor, IA

Average temperature in January - Thor, IA
  • Average high temperature in January: 24.3°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (24.3°F).

  • Average low temperature in January: 11.5°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (11.5°F).

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Average pressure in January
Thor, IA

Average pressure in January - Thor, IA
  • Average pressure in January: 30.15"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in January
Thor, IA

Average wind speed in January - Thor, IA
  • Average wind speed in January: 10.9mph

The windiest month (with the highest average wind speed) is April (11mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).

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Average humidity in January
Thor, IA

Average humidity in January - Thor, IA
  • Average humidity in January: 87%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (69%).

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Average rainfall in January
Thor, IA

Average rainfall in January - Thor, IA
  • Average rainfall in January: 0.94"

The wettest month (with the highest rainfall) is June (3.7").
The driest month (with the least rainfall) is January (0.94").

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Average rainfall days in January
Thor, IA

Average rainfall days in January - Thor, IA
  • Average rainfall days in January: 4.5 days

The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (3.3 days).

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Average snowfall in January
Thor, IA

Average snowfall in January - Thor, IA
  • Average snowfall in January: 4.37"

The month with the highest snowfall is February (4.76").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Thor, IA

Average snowfall days in January - Thor, IA
  • Average snowfall days in January: 11.8 days

The month with the highest number of snowfall days is January (11.8 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
Thor, IA

Average daylight in January / Average sunshine in January - Thor, IA
  • Average daylight in January: 9h and 3min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in January: 3h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

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Average sunshine days in January
Thor, IA

Average sunshine days in January - Thor, IA
  • Average sunshine days in January: 17.1 days

The month with the most sunshine days is November (18.1 days).
The month with the least sunshine days is June (10.4 days).

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Average UV index in January
Thor, IA

Average UV index in January - Thor, IA
  • Average UV index in January: 1

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in January
Thor, IA

Average cloud cover in January - Thor, IA
  • Average cloud cover in January: 59

The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 31).

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Average visibility in January
Thor, IA

Average visibility in January - Thor, IA
  • Average visibility in January: 5mi

The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).

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Thor, Iowa, USA

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