Des Plaines, United States experiences average highs of 15°C (59°F) and lows of 7°C (45°F) throughout the year. Rainfall is moderate, averaging about 10 rainy days per month. Sunshine is abundant, averaging about 9 hours per day. Average highs have stayed broadly stable across the available records.
Des Plaines, United States Weather & Climate 2026
Monthly climate averages for Des Plaines, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Mar–Aug At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
5.2/10
Best: June, July, August, September, October
UV Index
5
Low
Temperature 15°C / 7°C
Feels Like 14°C / 5°C
Rainy Days 10
Rainfall 84 mm
Sunshine 9 h
Humidity 71%
Wind Speed 19 km/h
Dew Point 6°C
Snow Days 6 days
Frost Days 17 days
Hottest Month
28°C
July
Avg Low20°C
Rain12days
Coldest Month
-6°C
January
Avg High0°C
Rain9days
Driest Month
7days
November
Avg High9°C
Avg Low3°C
Windiest Month
21 km/h
April (Gusts 46)
Worst Time to Visit
Consider avoiding January, February, March, December due to very cold temperatures.
Sun Position
Sunrise 05:17
Daylight 15.2h
Sunset 20:30
Live conditions—
Des Plaines on the map · live conditions
Des Plaines, United States
- Continent
- Americas
- Country
- United States
- City
- Des Plaines
- Population
- 58.7K
- Elevation
- 193 m
- Coordinates
- 42.03°, -87.88°
Seasonal Breakdown
Spring
Mar–May
Avg High 14°C
Avg Low 5°C
Rain 12 days/mo
Summer
Jun–Aug
Avg High 27°C
Avg Low 19°C
Rain 12 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 17°C
Avg Low 10°C
Rain 9 days/mo
2/3 best months
Winter
Dec–Feb
Avg High 2°C
Avg Low -5°C
Rain 8 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 0°C / -6°C . Feb: 3°C / -5°C . Mar: 9°C / 0°C . Apr: 14°C / 5°C . May: 20°C / 11°C . Jun: 26°C / 17°C . Jul: 28°C / 20°C . Aug: 27°C / 19°C . Sep: 24°C / 16°C . Oct: 17°C / 10°C . Nov: 9°C / 3°C . Dec: 4°C / -3°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 61 mm. Feb: 49 mm. Mar: 89 mm. Apr: 110 mm. May: 125 mm. Jun: 108 mm. Jul: 103 mm. Aug: 85 mm. Sep: 72 mm. Oct: 98 mm. Nov: 52 mm. Dec: 54 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 73%. Feb: 69%. Mar: 68%. Apr: 69%. May: 72%. Jun: 70%. Jul: 73%. Aug: 73%. Sep: 71%. Oct: 69%. Nov: 69%. Dec: 71%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 20 km/h . Feb: 21 km/h . Mar: 21 km/h . Apr: 21 km/h . May: 19 km/h . Jun: 18 km/h . Jul: 15 km/h . Aug: 15 km/h . Sep: 17 km/h . Oct: 20 km/h . Nov: 20 km/h . Dec: 20 km/h .
Sunshine
Sunshine
Sunshine: Jan: 5h. Feb: 7h. Mar: 8h. Apr: 9h. May: 10h. Jun: 12h. Jul: 12h. Aug: 11h. Sep: 10h. Oct: 7h. Nov: 6h. Dec: 5h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 3. Mar: UV 5. Apr: UV 5. May: UV 7. Jun: UV 7. Jul: UV 7. Aug: UV 7. Sep: UV 5. Oct: UV 4. Nov: UV 3. Dec: UV 2.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 11 days. Feb: 9 days. Mar: 5 days. Apr: 3 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 1 days. Nov: 3 days. Dec: 7 days.
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall has remained broadly steady.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 29°C | Jul · 28°C |
| Coldest month | Jan 2025 · -8°C | Jan · -6°C |
| Wettest month | Jul 2025 · 129 mm | May · 125 mm |
| Windiest month | Mar 2025 · 24 km/h | Apr · 21 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Fair May
Good June best
Excellent July best
Excellent August best
Excellent September best
Excellent October best
Good November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 0°C / -6°C | -4°C / -11°C | 9days (61 mm) Wet | 5.1h Fair | 73% Muggy | 2.1 Moderate | Poor | View Details |
| February | 3°C / -5°C | -1°C / -10°C | 8days (49 mm) Wet | 6.9h Fair | 69% Muggy | 3.3 Moderate | Poor | View Details |
| March | 9°C / 0°C | 5°C / -4°C | 11days (89 mm) Wet | 7.8h Good | 68% Muggy | 4.5 Moderate | Poor | View Details |
| April | 14°C / 5°C | 12°C / 1°C | 13days (110 mm) Wet | 8.9h Good | 69% Muggy | 5.4 High | Fair | View Details |
| May | 20°C / 11°C | 20°C / 8°C | 13days (125 mm) Wet | 10.3h Excellent | 72% Muggy | 6.7 High | Good | View Details |
| June best | 26°C / 17°C | 28°C / 17°C | 12days (108 mm) Wet | 11.9h Excellent | 70% Muggy | 7.2 Very High | Excellent | View Details |
| July best | 28°C / 20°C | 31°C / 21°C | 12days (103 mm) Wet | 12h Excellent | 73% Muggy | 7 High | Excellent | View Details |
| August best | 27°C / 19°C | 30°C / 20°C | 11days (85 mm) Wet | 11.4h Excellent | 73% Muggy | 6.5 High | Excellent | View Details |
| September best | 24°C / 16°C | 25°C / 16°C | 9days (72 mm) Wet | 9.6h Good | 71% Muggy | 5.2 High | Excellent | View Details |
| October best | 17°C / 10°C | 15°C / 7°C | 10days (98 mm) Wet | 7.4h Good | 69% Muggy | 3.8 Moderate | Good | View Details |
| November | 9°C / 3°C | 6°C / -2°C | 7days (52 mm) Good | 6.1h Fair | 69% Muggy | 2.5 Moderate | Poor | View Details |
| December | 4°C / -3°C | -1°C / -8°C | 8days (54 mm) Wet | 5.1h Fair | 71% Muggy | 1.8 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Des Plaines are June, July, August, September, October, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Des Plaines, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Des Plaines is July, with average daytime highs of 28°C (82°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Des Plaines is January, with average overnight lows of -6°C (21°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Des Plaines is May, averaging 125mm of precipitation across 13 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Des Plaines runs through April, May, June, July, with the heaviest rainfall in April. Based on 10-year averages for Des Plaines.
Des Plaines receives approximately 102 sunshine hours per year. The sunniest month is July with around 12 hours. Based on climate data for Des Plaines.
The least favorable months to visit Des Plaines are January, February, March, December, primarily due to very cold temperatures. For the best conditions, consider June, July, August, September, October instead.
The annual average UV index in Des Plaines is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Des Plaines is 71%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Des Plaines receives snow. Months with snowfall average 6 snow days and 10 cm (4 in) of accumulation, with about 17 frost days during winter.
Average wind speeds in Des Plaines are 19 km/h (12 mph). The windiest month is April with peak winds reaching 21 km/h (13 mph) (gusts up to 46 km/h / 29 mph).
Des Plaines averages 4 clear-sky days per month with overall cloud cover around 60%. The clearest skies occur in September.
The annual average dew point in Des Plaines is 6°C (43°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Des Plaines has a Humid Subtropical climate, classified as Cfa under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Des Plaines ranges from 5°C (41°F) to 14°C (57°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, June is a great time to visit Des Plaines. It earns a climate score of 8.4/10 with Excellent.
For June in Des Plaines, pack Umbrella, Waterproof jacket, Breathable clothing, Sunscreen (SPF 30+), Sun hat. With average highs of 26°C (79°F) and 12 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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