January weather forecast
Downers Grove, IA

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Weather in January

January, like December, is another subzero cold winter month in Downers Grove, Iowa, with an average temperature varying between 25.2°F (-3.8°C) and 13.3°F (-10.4°C).

Temperature

January, having an average high-temperature of 25.2°F (-3.8°C) and an average low-temperature of 13.3°F (-10.4°C), is the coldest month.

Humidity

January and February, with an average relative humidity of 86%, are the most humid months.

Rainfall

January and February are months with the least rain when the rain falls for 5.2 days and typically aggregates up to 1.26" (32mm) of rain.

Snowfall

January through April, October through December are months with snowfall in Downers Grove. January is the month with the most snowfall in Downers Grove. Snow falls for 12.1 days and accumulates 5.04" (128mm) of snow.

Daylight

In Downers Grove, the average length of the day in January is 9h and 31min.
On the first day of the month, sunrise is at 7:33 am and sunset at 4:43 pm. On the last day of January, in Downers Grove, Iowa, sunrise is at 7:19 am and sunset at 5:17 pm CST.

Sunshine

With an average of 3.8h of sunshine, January has the least sunshine of the year.

UV index

The months with the lowest UV index in Downers Grove are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index of 1 during January translates into these guidelines:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Enhance your sun protection with tightly woven, yet airy clothing. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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Frequently asked questions

What part of the year is the coldest in Downers Grove?

The month of January sees the average lowest temperatures in Downers Grove, reaching 25.2°F (-3.8°C) at the peak and 13.3°F (-10.4°C) at the low.

How cold is it in Downers Grove in January?

In Downers Grove, 25.2°F (-3.8°C) is the average high-temperature and 13.3°F (-10.4°C) is the average low-temperature during January.

What is the most humid month in Downers Grove?

January and February, with an average relative humidity of 86%, are most humid months in Downers Grove, Iowa.

What is the average humidity in January in Downers Grove?

In January, the average relative humidity is 86%.

What is the driest month in Downers Grove?

January and February are months with the least rain in Downers Grove, Iowa, when the rain falls for 5.2 days and typically aggregates up to 1.26" (32mm) of rain.

How many days does it rain in January in Downers Grove?

In January, the rain falls for 5.2 days. Throughout January, 1.26" (32mm) of precipitation is accumulated.

When does it snow the most in Downers Grove?

January is the month with the most snowfall. Snow falls for 12.1 days and accumulates 5.04" (128mm) of snow.

How many days does it snow in January in Downers Grove?

In Downers Grove, in January, snow falls for 12.1 days, with typically accumulated 5.04" (128mm) of snow.

How many hours of daylight does Downers Grove have in January?

In January, the average day length in Downers Grove, Iowa, is 9h and 31min.

What time are sunrise and sunset in January in Downers Grove?

In January, on the first day of the month, sunrise is at 7:33 am and sunset at 4:43 pm. On the last day of the month, in Downers Grove, Iowa, sunrise is at 7:19 am and sunset at 5:17 pm CST.

What is the month with the least sunshine in Downers Grove?

January has the least sunshine of the year in Downers Grove, with an average of 3.8h of sunshine.

How many hours of sunshine does Downers Grove have in January?

In January, the average sunshine duration in Downers Grove is 3.8h.

What is the month with the lowest UV index in Downers Grove?

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

How high is the UV index in January in Downers Grove?

In Downers Grove, Iowa, the average daily maximum UV index in January is 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
31.8°F -0.1°C
25.2°F -3.8°C
28.9°F -1.7°C
Average low temperature
21.4°F -5.9°C
13.3°F -10.4°C
16°F -8.9°C
Average pressure
30.1" 765mmHg
30.13" 765mmHg
30.12" 765mmHg
Average wind speed
10mph 16.1km/h
10.4mph 16.7km/h
10.5mph 16.9km/h
Average max. wind speed
10.7mph 17.2km/h
11.2mph 18km/h
11.2mph 18km/h
Average wind speed gusts
15.7mph 25.3km/h
16.6mph 26.7km/h
16.7mph 26.9km/h
Average humidity
82%
86%
86%
Average rainfall
1.42" 36mm
1.26" 32mm
1.26" 32mm
Average rainfall days
7.7
5.2
5.3
Average snowfall
3.07" 78mm
5.04" 128mm
4.72" 120mm
Average snowfall days
9.4
12.1
9.5
Average daylight
9h 1min
9h 3min
10h 4min
Average sunshine
4h 1min
3h 5min
4h 0min
Average sunshine days
16.7
15.8
15.3
Average UV index
1
1
2
Average cloud cover
57%
60%
57%
Average visibility
6mi 9.7km
5mi 8km
6mi 9.7km

Average temperature in January
Downers Grove, IA

Average temperature in January - Downers Grove, IA
  • Average high temperature in January: 25.2°F

The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (25.2°F).

  • Average low temperature in January: 13.3°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).

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Average pressure in January
Downers Grove, IA

Average pressure in January - Downers Grove, IA
  • Average pressure in January: 30.13"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in January
Downers Grove, IA

Average wind speed in January - Downers Grove, IA
  • Average wind speed in January: 10.4mph

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

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Average humidity in January
Downers Grove, IA

Average humidity in January - Downers Grove, IA
  • Average humidity in January: 86%

The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in January
Downers Grove, IA

Average rainfall in January - Downers Grove, IA
  • Average rainfall in January: 1.26"

The wettest month (with the highest rainfall) is May (4.25").
The driest months (with the least rainfall) are January and February (1.26").

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Average rainfall days in January
Downers Grove, IA

Average rainfall days in January - Downers Grove, IA
  • Average rainfall days in January: 5.2 days

The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (5.2 days).

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Average snowfall in January
Downers Grove, IA

Average snowfall in January - Downers Grove, IA
  • Average snowfall in January: 5.04"

The month with the highest snowfall is January (5.04").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Downers Grove, IA

Average snowfall days in January - Downers Grove, IA
  • Average snowfall days in January: 12.1 days

The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Downers Grove, IA

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

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

  • Average sunshine in January: 3h and 5min

The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

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Average sunshine days in January
Downers Grove, IA

Average sunshine days in January - Downers Grove, IA
  • Average sunshine days in January: 15.8 days

The month with the most sunshine days is September (17 days).
The month with the least sunshine days is June (10.5 days).

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Average UV index in January
Downers Grove, IA

Average UV index in January - Downers Grove, IA
  • Average UV index in January: 1

The months with the highest UV index are June and July (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
Downers Grove, IA

Average cloud cover in January - Downers Grove, IA
  • Average cloud cover in January: 60

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in January
Downers Grove, IA

Average visibility in January - Downers Grove, 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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Downers Grove, Iowa, USA

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