Macomb, United States experiences average highs of 17°C (63°F) and lows of 8°C (46°F) throughout the year. Rainfall is moderate, averaging about 9 rainy days per month. Sunshine is abundant, averaging about 9 hours per day. Average highs have stayed broadly stable across the available records.
Macomb, United States Weather & Climate 2026
Monthly climate averages for Macomb, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Mar–Jul At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
5.5/10
Best: May, June, July, August, September
UV Index
5
Low
Temperature 17°C / 8°C
Feels Like 16°C / 6°C
Rainy Days 9
Rainfall 83 mm
Sunshine 9 h
Humidity 68%
Wind Speed 19 km/h
Dew Point 7°C
Snow Days 4 days
Frost Days 14 days
Hottest Month
30°C
July
Avg Low21°C
Rain10days
Coldest Month
-6°C
January
Avg High2°C
Rain7days
Driest Month
6days
September
Avg High27°C
Avg Low17°C
Windiest Month
23 km/h
April (Gusts 46)
Worst Time to Visit
Consider avoiding January, February, December due to very cold temperatures.
Sun Position
Sunrise 05:33
Daylight 15h
Sunset 20:36
Live conditions—
Macomb on the map · live conditions
Macomb, United States
- Continent
- Americas
- Country
- United States
- City
- Macomb
- Population
- 18.5K
- Elevation
- 215 m
- Coordinates
- 40.46°, -90.67°
Seasonal Breakdown
Spring
Mar–May
Avg High 17°C
Avg Low 7°C
Rain 12 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 29°C
Avg Low 20°C
Rain 10 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 19°C
Avg Low 10°C
Rain 7 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 4°C
Avg Low -4°C
Rain 7 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: 2°C / -6°C . Feb: 5°C / -4°C . Mar: 12°C / 2°C . Apr: 17°C / 6°C . May: 23°C / 13°C . Jun: 29°C / 19°C . Jul: 30°C / 21°C . Aug: 29°C / 20°C . Sep: 27°C / 17°C . Oct: 19°C / 10°C . Nov: 11°C / 3°C . Dec: 5°C / -3°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 53 mm. Feb: 51 mm. Mar: 105 mm. Apr: 108 mm. May: 123 mm. Jun: 99 mm. Jul: 97 mm. Aug: 98 mm. Sep: 71 mm. Oct: 88 mm. Nov: 55 mm. Dec: 52 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 72%. Feb: 67%. Mar: 66%. Apr: 65%. May: 69%. Jun: 65%. Jul: 71%. Aug: 70%. Sep: 66%. Oct: 65%. Nov: 68%. Dec: 71%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 20 km/h . Feb: 21 km/h . Mar: 22 km/h . Apr: 23 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: 21 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: 8h. Nov: 7h. Dec: 6h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 4. Mar: UV 5. Apr: UV 6. May: UV 7. Jun: UV 7. Jul: UV 7. Aug: UV 7. Sep: UV 6. 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: 8 days. Feb: 8 days. Mar: 3 days. Apr: 1 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 2 days. Dec: 4 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 · 31°C | Jul · 30°C |
| Coldest month | Jan 2025 · -8°C | Jan · -6°C |
| Wettest month | Apr 2025 · 110 mm | May · 123 mm |
| Windiest month | Mar 2025 · 26 km/h | Apr · 23 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Fair May best
Excellent June best
Excellent July best
Excellent August best
Excellent September best
Excellent October
Good November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 2°C / -6°C | -3°C / -11°C | 7days (53 mm) Good | 5.4h Fair | 72% Muggy | 2.5 Moderate | Poor | View Details |
| February | 5°C / -4°C | 1°C / -10°C | 7days (51 mm) Good | 7.1h Good | 67% Muggy | 3.7 Moderate | Poor | View Details |
| March | 12°C / 2°C | 8°C / -3°C | 12days (105 mm) Wet | 7.6h Good | 66% Muggy | 4.8 Moderate | Poor | View Details |
| April | 17°C / 6°C | 15°C / 3°C | 12days (108 mm) Wet | 8.8h Good | 65% Muggy | 5.8 High | Fair | View Details |
| May best | 23°C / 13°C | 23°C / 11°C | 13days (123 mm) Wet | 10.1h Excellent | 69% Muggy | 7 High | Excellent | View Details |
| June best | 29°C / 19°C | 31°C / 19°C | 10days (99 mm) Wet | 12.1h Excellent | 65% Muggy | 7.2 Very High | Excellent | View Details |
| July best | 30°C / 21°C | 33°C / 22°C | 10days (97 mm) Wet | 11.8h Excellent | 71% Muggy | 7.3 Very High | Excellent | View Details |
| August best | 29°C / 20°C | 31°C / 21°C | 9days (98 mm) Wet | 11.1h Excellent | 70% Muggy | 6.6 High | Excellent | View Details |
| September best | 27°C / 17°C | 27°C / 17°C | 6days (71 mm) Good | 10h Excellent | 66% Muggy | 5.7 High | Excellent | View Details |
| October | 19°C / 10°C | 17°C / 7°C | 9days (88 mm) Wet | 7.6h Good | 65% Muggy | 4.2 Moderate | Good | View Details |
| November | 11°C / 3°C | 7°C / -2°C | 7days (55 mm) Good | 6.6h Fair | 68% Muggy | 2.9 Moderate | Poor | View Details |
| December | 5°C / -3°C | 1°C / -7°C | 7days (52 mm) Good | 5.5h Fair | 71% Muggy | 2.1 Moderate | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Macomb are May, June, July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Macomb, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Macomb is July, with average daytime highs of 30°C (86°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Macomb 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 Macomb is May, averaging 123mm of precipitation across 13 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Macomb runs through May, March, April, June, with the heaviest rainfall in May. Based on 10-year averages for Macomb.
Macomb receives approximately 104 sunshine hours per year. The sunniest month is June with around 12 hours. Based on climate data for Macomb.
The least favorable months to visit Macomb are January, February, December, primarily due to very cold temperatures. For the best conditions, consider May, June, July, August, September instead.
The annual average UV index in Macomb is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Macomb is 68%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Macomb receives snow. Months with snowfall average 4 snow days and 8 cm (3 in) of accumulation, with about 14 frost days during winter.
Average wind speeds in Macomb are 19 km/h (12 mph). The windiest month is April with peak winds reaching 23 km/h (14 mph) (gusts up to 46 km/h / 29 mph).
Macomb averages 5 clear-sky days per month with overall cloud cover around 56%. The clearest skies occur in September.
The annual average dew point in Macomb is 7°C (45°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Macomb 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 Macomb ranges from 6°C (43°F) to 16°C (61°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 Macomb. It earns a climate score of 8.7/10 with Excellent.
For June in Macomb, pack Umbrella, Waterproof jacket, Breathable clothing, Sunscreen (SPF 30+), Sun hat. With average highs of 29°C (84°F) and 10 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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