Carol Stream, United States — Weather in January 2027

Monthly climate averages for Carol Stream, United States. Based on 10-year ERA5 reanalysis data.

Dfa Hot-Summer Continental
1.6 /10
Poor

January is a poor month in Carol Stream

Climate Overview

Carol Stream, United States in January has cold conditions, with highs averaging around 0.1°C (32°F).

This month falls at the middle of Winter. Cold conditions dominate the month.

Temperatures remain fairly steady throughout January, with daily highs around 0°C (32°F).

Rainfall is heaviest during the last third of the month, while the first third tends to be drier.

The warmest days tend to fall around the 10th, averaging 2°C (36°F).

Compared to December, this month is about 3°C cooler with 1 more rainy days. Temperatures will rise further into February.

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Monthly January Averages

Temperature
0°C / -7°C
Feels Like
-4°C / -12°C
Rain
9 days · 60 mm
Sunshine
5h / day
Humidity
73% — Humid
Wind
19 km/h
Wind Direction
W (269°)
Gusts
38 km/h
Daylight
9.5 h
Cloud Cover
71%
Clear Sky Days
2.8
UV Index
2.1 — Moderate
Dew Point
-8°C — Dry
Moon Phase
First Quarter · 46%
Snow Days
11 days · 22.4 cm
Frost Days
27 days

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

8°C 4°C 0°C -4°C -8°C -12°C -16°C 151015202531
High Low

Daily Precipitation

0 mm 2 mm 4 mm 6 mm 151015202531
Rainfall

Daily Sunshine

0h 2h 4h 6h 8h 10h 151015202531
Sunshine

Daily Wind Speed

0 6 12 18 24 30 151015202531
Wind Speed
Sun Position
Sunrise 07:18
Daylight 9.5h
Sunset 16:47

What to Expect

Cold daytime highs of 0°C (32°F) mean shorter outdoor excursions with warming breaks.

Rain usually comes in shorter passing showers rather than all-day rain.

1 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

January
Poor
Temp
0°C / -7°C
Feels Like
-4°C / -12°C
Rain
9days (60 mm) Wet
Sun
5h Fair
Humidity
73% Muggy
UV
2.1 Moderate
Snow Days
11days
View Details
February
Poor
Temp
3°C / -6°C
Feels Like
-1°C / -11°C
Rain
7days (48 mm) Good
Sun
6.9h Fair
Humidity
69% Muggy
UV
3.4 Moderate
Snow Days
9days
View Details
March
Poor
Temp
10°C / 0°C
Feels Like
6°C / -4°C
Rain
11days (91 mm) Wet
Sun
7.6h Good
Humidity
67% Muggy
UV
4.5 Moderate
Snow Days
5days
View Details
April
Fair
Temp
15°C / 4°C
Feels Like
13°C / 1°C
Rain
13days (114 mm) Wet
Sun
8.6h Good
Humidity
67% Muggy
UV
5.5 High
Snow Days
3days
View Details
May
Good
Temp
21°C / 11°C
Feels Like
21°C / 9°C
Rain
13days (130 mm) Wet
Sun
10h Excellent
Humidity
69% Muggy
UV
6.7 High
View Details
June best
Excellent
Temp
27°C / 17°C
Feels Like
29°C / 17°C
Rain
12days (112 mm) Wet
Sun
11.7h Excellent
Humidity
68% Muggy
UV
7.1 Very High
View Details
July best
Excellent
Temp
28°C / 19°C
Feels Like
31°C / 21°C
Rain
12days (109 mm) Wet
Sun
11.8h Excellent
Humidity
72% Muggy
UV
7 High
View Details
August best
Excellent
Temp
27°C / 19°C
Feels Like
30°C / 20°C
Rain
11days (89 mm) Wet
Sun
11.1h Excellent
Humidity
73% Muggy
UV
6.5 High
View Details
September best
Excellent
Temp
25°C / 16°C
Feels Like
25°C / 15°C
Rain
9days (78 mm) Wet
Sun
9.5h Good
Humidity
71% Muggy
UV
5.3 High
View Details
October best
Good
Temp
17°C / 9°C
Feels Like
15°C / 7°C
Rain
9days (95 mm) Wet
Sun
7.2h Good
Humidity
69% Muggy
UV
3.8 Moderate
Snow Days
1days
View Details
November
Poor
Temp
9°C / 2°C
Feels Like
6°C / -2°C
Rain
7days (53 mm) Good
Sun
6.1h Fair
Humidity
70% Muggy
UV
2.5 Moderate
Snow Days
3days
View Details
December
Poor
Temp
3°C / -4°C
Feels Like
-1°C / -8°C
Rain
8days (53 mm) Wet
Sun
5.1h Fair
Humidity
72% Muggy
UV
1.8 Low
Snow Days
7days
View Details
Month Temp Feels Like Rain Sun Humidity UV Status
January 0°C / -7°C -4°C / -12°C 9days (60 mm) Wet 5h Fair 73% Muggy 2.1 Moderate Poor View Details
February 3°C / -6°C -1°C / -11°C 7days (48 mm) Good 6.9h Fair 69% Muggy 3.4 Moderate Poor View Details
March 10°C / 0°C 6°C / -4°C 11days (91 mm) Wet 7.6h Good 67% Muggy 4.5 Moderate Poor View Details
April 15°C / 4°C 13°C / 1°C 13days (114 mm) Wet 8.6h Good 67% Muggy 5.5 High Fair View Details
May 21°C / 11°C 21°C / 9°C 13days (130 mm) Wet 10h Excellent 69% Muggy 6.7 High Good View Details
June best 27°C / 17°C 29°C / 17°C 12days (112 mm) Wet 11.7h Excellent 68% Muggy 7.1 Very High Excellent View Details
July best 28°C / 19°C 31°C / 21°C 12days (109 mm) Wet 11.8h Excellent 72% Muggy 7 High Excellent View Details
August best 27°C / 19°C 30°C / 20°C 11days (89 mm) Wet 11.1h Excellent 73% Muggy 6.5 High Excellent View Details
September best 25°C / 16°C 25°C / 15°C 9days (78 mm) Wet 9.5h Good 71% Muggy 5.3 High Excellent View Details
October best 17°C / 9°C 15°C / 7°C 9days (95 mm) Wet 7.2h Good 69% Muggy 3.8 Moderate Good View Details
November 9°C / 2°C 6°C / -2°C 7days (53 mm) Good 6.1h Fair 70% Muggy 2.5 Moderate Poor View Details
December 3°C / -4°C -1°C / -8°C 8days (53 mm) Wet 5.1h Fair 72% Muggy 1.8 Low Poor View Details

What to Wear

Full winter gear is a must — insulated coat, thermal base layers, warm hat, gloves, and waterproof boots.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

Warm coatThermal base layersScarf & glovesUmbrellaComfortable walking shoes

Frequently Asked Questions

January is typically poor for visiting Carol Stream, with average highs of 0°C (32°F) and around 9 rainy days. Carol Stream, United States in January has cold conditions, with highs averaging around 0.1°C (32°F).
Carol Stream typically sees around 9 rainy days in January with 60 mm (2.4 in) of total rainfall. An umbrella should suffice.
Yes, nights in Carol Stream during January are cold, averaging -7°C (19°F). Pack warm layers and a coat for evenings.
With highs of 0°C (32°F) and lows of -7°C (19°F) in January, we recommend: Warm coat, Thermal base layers, Scarf & gloves, Umbrella, Comfortable walking shoes. Comfortable walking shoes are essential.
January is not the most favourable month weather-wise in Carol Stream. Consider visiting during months with milder temperatures or less rainfall for a better experience.
The average UV index in Carol Stream during January is 2 (low). No special sun protection is needed.
Carol Stream gets approximately 10 hours of daylight per day in January, with around 5 hours of sunshine.
Yes, Carol Stream typically sees around 11 snow days in January with roughly 22 cm (9 in) of snowfall.

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