January weather forecast
Altoona, IA

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Weather in January

January presents Altoona's coldest weather condition with average highs and lows between 27.5°F (-2.5°C) and 14.4°F (-9.8°C). During this period, chilly winds are prevalent with an average speed of 10.3mph (16.6km/h) coupled with a high probability of snowfall. Precipitation is quite negligible but is presented in the form of snow. The days are short, offering limited hours of sunlight and significantly cold temperatures. The city is often shrouded in dense fog during this period, restricting visibility and creating a picturesque winter landscape.

Temperature

January is the coldest month of the year in Altoona, registering average temperatures as high as 27.5°F (-2.5°C) and as low as 14.4°F (-9.8°C).

Humidity

January is the most humid month in Altoona, with an average relative humidity of 83%.

Rainfall

The months with the least rainfall are January, February and December Rain falls for 1.8 days and accumulates 0.24" (6mm) of rain.

Snowfall

Months with snowfall in Altoona are January through April, October through December. January is the month with the most snowfall. Snow falls for 6.2 days and accumulates 0.91" (23mm) of snow.

Daylight

In January, the average length of the day is 9h and 34min.
On the first day of January in Altoona, sunrise is at 7:40 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 5:27 pm CST.

Sunshine

With an average of 4.2h of sunshine, January has the least sunshine of the year in Altoona.

UV index

January is the month with the lowest UV index in Altoona, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In January, the average maximum UV index of 1 translates into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
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Frequently asked questions

What is the coldest month in Altoona?

With average temperatures fluctuating between a high of 27.5°F (-2.5°C) and a low of 14.4°F (-9.8°C), January stands out as the coldest month in Altoona.

How cold is it in Altoona in January?

The average high-temperature, in January, in Altoona, is 27.5°F (-2.5°C), while the average low-temperature is 14.4°F (-9.8°C).

What is the most humid month in Altoona?

The most humid month in Altoona, Iowa, is January, with an average relative humidity of 83%.

What is the average humidity in January in Altoona?

In Altoona, Iowa, the average relative humidity in January is 83%.

What is the driest month in Altoona?

The months with the least rainfall in Altoona are January, February and December Rain falls for 1.8 days and accumulates 0.24" (6mm) of rain.

How much does it rain in Altoona in January?

In January, the rain falls for 1.8 days. Throughout January, 0.24" (6mm) of precipitation is accumulated.

When does it snow the most in Altoona?

The month with the most snowfall in Altoona, Iowa, is January, when snow falls for 6.2 days and typically aggregates up to 0.91" (23mm) of snow.

How many days does it snow in January in Altoona?

In Altoona, in January, snow falls for 6.2 days, with typically accumulated 0.91" (23mm) of snow.

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

In Altoona, Iowa, the average day length in January is 9h and 34min.

When is the sunrise / sunset in January in Altoona?

In January, on the first day of the month, sunrise is at 7:40 am and sunset at 4:54 pm. On the last day of the month, in Altoona, sunrise is at 7:26 am and sunset at 5:27 pm CST.

What is the month with the least sunshine in Altoona?

January has the least sunshine of the year in Altoona, Iowa, with an average of 4.2h of sunshine.

How many hours of sunshine does Altoona have in January?

The average sunshine duration in January is 4.2h.

When is the lowest UV index in Altoona?

The month with the lowest UV index is January, with an average maximum UV index of 1.

What is the UV index intensity in January in Altoona?

In January, the average daily maximum UV index is 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
34°F 1.1°C
27.5°F -2.5°C
31.6°F -0.2°C
Average low temperature
22.1°F -5.5°C
14.4°F -9.8°C
18°F -7.8°C
Average pressure
30.12" 765mmHg
30.16" 766mmHg
30.14" 766mmHg
Average wind speed
9.9mph 15.9km/h
10.3mph 16.6km/h
10.2mph 16.4km/h
Average max. wind speed
10.5mph 16.9km/h
10.9mph 17.5km/h
10.9mph 17.5km/h
Average wind speed gusts
15.6mph 25.1km/h
16.5mph 26.6km/h
16.2mph 26.1km/h
Average humidity
79%
83%
82%
Average rainfall
0.24" 6mm
0.24" 6mm
0.24" 6mm
Average rainfall days
2.5
1.8
1.9
Average snowfall
0.24" 6mm
0.91" 23mm
0.67" 17mm
Average snowfall days
4.2
6.2
6
Average daylight
9h 1min
9h 4min
10h 4min
Average sunshine
4h 4min
4h 1min
4h 4min
Average sunshine days
25.5
25.4
21.8
Average UV index
2
1
2
Average cloud cover
50%
54%
51%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Altoona, IA

Average temperature in January - Altoona, IA
  • Average high temperature in January: 27.5°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (27.5°F).

  • Average low temperature in January: 14.4°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).

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Average pressure in January
Altoona, IA

Average pressure in January - Altoona, 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 (29.89"Hg).

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Average wind speed in January
Altoona, IA

Average wind speed in January - Altoona, IA
  • Average wind speed in January: 10.3mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

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Average humidity in January
Altoona, IA

Average humidity in January - Altoona, IA
  • Average humidity in January: 83%

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in January
Altoona, IA

Average rainfall in January - Altoona, IA
  • Average rainfall in January: 0.24"

The wettest month (with the highest rainfall) is May (0.98").
The driest months (with the least rainfall) are January, February and December (0.24").

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Average rainfall days in January
Altoona, IA

Average rainfall days in January - Altoona, IA
  • Average rainfall days in January: 1.8 days

The month with the highest number of rainy days is May (11.6 days).
The month with the least rainy days is January (1.8 days).

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Average snowfall in January
Altoona, IA

Average snowfall in January - Altoona, IA
  • Average snowfall in January: 0.91"

The month with the highest snowfall is January (0.91").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Altoona, IA

Average snowfall days in January - Altoona, IA
  • Average snowfall days in January: 6.2 days

The month with the highest number of snowfall days is January (6.2 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
Altoona, IA

Average daylight in January / Average sunshine in January - Altoona, 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 1min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

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Average sunshine days in January
Altoona, IA

Average sunshine days in January - Altoona, IA
  • Average sunshine days in January: 25.4 days

The month with the most sunshine days is December (25.5 days).
The month with the least sunshine days is June (15.5 days).

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Average UV index in January
Altoona, IA

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

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

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Average cloud cover in January
Altoona, IA

Average cloud cover in January - Altoona, 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 29).

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Average visibility in January
Altoona, IA

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

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

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Altoona, Iowa, USA

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