January weather forecast
Dexter, IA

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Weather in January

January, the same as December, in Dexter, Iowa, is a freezing cold winter month, with an average temperature fluctuating between 14.5°F (-9.7°C) and 28°F (-2.2°C).

Temperature

January, with an average high of 28°F (-2.2°C) and a low of 14.5°F (-9.7°C), signifies the coldest month of the year.

Humidity

The months with the highest humidity in Dexter, Iowa, are January and February, with an average relative humidity of 82%.

Rainfall

January is the month with the least rainfall. Rain falls for 3.3 days and accumulates 0.55" (14mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Dexter, in January, snow falls for 8.8 days, with typically accumulated 2.32" (59mm) of snow. In Dexter, during the entire year, snow falls for 31.7 days and aggregates up to 9.29" (236mm) of snow.

Daylight

The average length of the day in January in Dexter, Iowa, is 9h and 35min.
On the first day of the month, sunrise is at 7:43 am and sunset at 4:57 pm. On the last day of January, sunrise is at 7:29 am and sunset at 5:30 pm CST.

Sunshine

The month with the least sunshine is January, with an average of 4.3h of sunshine.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index of 1 during January leads to these instructions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
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Frequently asked questions

What month is the coldest in Dexter?

Dexter, Iowa, experiences its average lowest temperatures in January, reaching a peak of 28°F (-2.2°C) and a minimum of 14.5°F (-9.7°C).

How cold is it in Dexter in January?

The high-temperature in Dexter, Iowa, during January is 28°F (-2.2°C) and the low-temperature is 14.5°F (-9.7°C).

What are the most humid months in Dexter?

January and February, with an average relative humidity of 82%, are most humid months in Dexter.

What is the average humidity in January in Dexter?

In Dexter, Iowa, the average relative humidity in January is 82%.

What is the driest month in Dexter?

January is the month with the least rainfall in Dexter. Rain falls for 3.3 days and accumulates 0.55" (14mm) of precipitation.

How much does it rain in Dexter in January?

In Dexter, Iowa, in January, during 3.3 rainfall days, 0.55" (14mm) of precipitation is typically accumulated.

How many days does it snow in January in Dexter?

In Dexter, in January, during 8.8 snowfall days, 2.32" (59mm) of snow is typically accumulated.

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

The average day length in January in Dexter is 9h and 35min.

When is the sunrise / sunset in January in Dexter?

In January, on the first day of the month, sunrise is at 7:43 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:30 pm CST.

What is the month with the least sunshine in Dexter?

January has the least sunshine of the year, with an average of 4.3h of sunshine.

How long on average sun shines in January in Dexter?

The average sunshine duration in January in Dexter is 4.3h.

What are the months with the lowest UV index in Dexter?

The months with the lowest UV index in Dexter are January and December, with an average maximum UV index of 1.

How high is the UV index in January in Dexter?

In January, the average daily maximum UV index in Dexter is 1. A UV Index value of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
33.3°F 0.7°C
28°F -2.2°C
32°F 0°C
Average low temperature
21.7°F -5.7°C
14.5°F -9.7°C
17.8°F -7.9°C
Average pressure
30.12" 765mmHg
30.16" 766mmHg
30.14" 766mmHg
Average wind speed
10.3mph 16.6km/h
10.6mph 17.1km/h
10.6mph 17.1km/h
Average max. wind speed
11mph 17.7km/h
11.4mph 18.3km/h
11.2mph 18km/h
Average wind speed gusts
16.3mph 26.2km/h
17.2mph 27.7km/h
16.8mph 27km/h
Average humidity
79%
82%
82%
Average rainfall
0.67" 17mm
0.55" 14mm
0.63" 16mm
Average rainfall days
4.1
3.3
2.9
Average snowfall
1.3" 33mm
2.32" 59mm
2.76" 70mm
Average snowfall days
6
8.8
7.8
Average daylight
9h 1min
9h 4min
10h 4min
Average sunshine
4h 5min
4h 2min
5h 0min
Average sunshine days
22
19.9
18
Average UV index
1
1
2
Average cloud cover
49%
54%
50%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Dexter, IA

Average temperature in January - Dexter, IA
  • Average high temperature in January: 28°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (28°F).

  • Average low temperature in January: 14.5°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (14.5°F).

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Average pressure in January
Dexter, IA

Average pressure in January - Dexter, IA
  • Average pressure in January: 30.16"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in January
Dexter, IA

Average wind speed in January - Dexter, IA
  • Average wind speed in January: 10.6mph

The windiest months (with the highest average wind speed) are January and February (10.6mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).

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Average humidity in January
Dexter, IA

Average humidity in January - Dexter, IA
  • Average humidity in January: 82%

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in January
Dexter, IA

Average rainfall in January - Dexter, IA
  • Average rainfall in January: 0.55"

The wettest month (with the highest rainfall) is June (3.11").
The driest month (with the least rainfall) is January (0.55").

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Average rainfall days in January
Dexter, IA

Average rainfall days in January - Dexter, IA
  • Average rainfall days in January: 3.3 days

The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is February (2.9 days).

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Average snowfall in January
Dexter, IA

Average snowfall in January - Dexter, IA
  • Average snowfall in January: 2.32"

The month with the highest snowfall is February (2.76").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Dexter, IA

Average snowfall days in January - Dexter, IA
  • Average snowfall days in January: 8.8 days

The month with the highest number of snowfall days is January (8.8 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
Dexter, IA

Average daylight in January / Average sunshine in January - Dexter, IA
  • Average daylight in January: 9h and 4min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in January: 4h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

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Average sunshine days in January
Dexter, IA

Average sunshine days in January - Dexter, IA
  • Average sunshine days in January: 19.9 days

The month with the most sunshine days is December (22 days).
The month with the least sunshine days is May (12.1 days).

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Average UV index in January
Dexter, IA

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

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in January
Dexter, IA

Average cloud cover in January - Dexter, IA
  • Average cloud cover in January: 54

The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July and September (Cloud cover 30).

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Average visibility in January
Dexter, IA

Average visibility in January - Dexter, IA
  • Average visibility in January: 6mi

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

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Dexter, Iowa, USA

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