Monroe, MI Climate: Temperature by Month
Average temperature and precipitation from NOAA NCEI 1991–2020 normals →, with a derived climate comfort score
30-year climate normals (1991-2020) from Monroe's primary NOAA station, MONROE.
The climate verdict for Monroe
Monroe, Michigan has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 50°F. July is the warmest month at 74°F and January the coldest at 25°F.
- 50°F
- average temperature, NOAA 1991-2020 normal
- 183 days
- growing season, frost-free days
Monroe: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00205563 · Monroe, MI 50°F mean
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-UNK · SWING-WIDE · COMF-UNK · LOAD-HEAT · STN-1 · BOOK-PART
- TEMP-COOL 50°F
- RANK-COOL #2,676
- PHOTO-FINISH ≈ Woodburn
- PRCP-UNK Rain n/a
- SWING-WIDE 48°F
- COMF-UNK Comfort n/a
- LOAD-HEAT 6,240 HDD
- STN-1 USC00205563
- BOOK-PART 4/6 fields
Nearest mean-temperature peer: Woodburn, IN ( -0.1 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every MI station list.
- Monroe (this station) 50°F
- Cold Woodburn, IN 50°F
- Hot Laporte, IN 50°F
- Near Julesburg, CO 50°F
- Near S Bend, IN 50°F
Climate Living Index · Monroe
Monroe: 48/100 · grade D
Monroe publishes 3 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 3 missing weights rescale to 100.
PlainClimate-derived for Monroe, not an official NOAA rating. Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 137 calendar days | 55/100 · C |
| Frost-free season | 183 days/year | 52/100 · D |
| Annual temperature balance | 49.9°F · 17.6° from 67.5°F | 40/100 · D |
Monroe · 2026-08-04 · NOAA NCEI Climate Normals · method .
National standing · heating-led station
Where Monroe sits across the climate record
Available NOAA 1991–2020 fields for Monroe are ranked only against stations that publish the same field, missing metrics stay blank rather than estimated.
- Annual temperature
- 39th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Seasonal temperature swing
- Wider than 74%
- Warmest-to-coldest month gap for Monroe is large versus 6,861 complete station-years.
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 33°F (0°C) | 18°F (-8°C) | 25°F (-4°C) | N/A | 28.2 | 0.0 |
| February | 35°F (2°C) | 19°F (-7°C) | 27°F (-3°C) | N/A | 26.3 | 0.0 |
| March | 45°F (7°C) | 27°F (-3°C) | 36°F (2°C) | N/A | 21.7 | 0.0 |
| April | 58°F (14°C) | 38°F (3°C) | 48°F (9°C) | N/A | 6.7 | 0.0 |
| May | 69°F (21°C) | 49°F (10°C) | 59°F (15°C) | N/A | 0.5 | 0.3 |
| June | 80°F (27°C) | 59°F (15°C) | 70°F (21°C) | N/A | 0.0 | 2.6 |
| July | 85°F (29°C) | 63°F (17°C) | 74°F (23°C) | N/A | 0.0 | 7.1 |
| August | 82°F (28°C) | 61°F (16°C) | 71°F (22°C) | N/A | 0.0 | 2.7 |
| September | 75°F (24°C) | 54°F (12°C) | 64°F (18°C) | N/A | 0.0 | 1.3 |
| October | 63°F (17°C) | 42°F (6°C) | 53°F (11°C) | N/A | 3.4 | 0.1 |
| November | 49°F (10°C) | 33°F (0°C) | 41°F (5°C) | N/A | 15.8 | 0.0 |
| December | 38°F (3°C) | 24°F (-5°C) | 31°F (-1°C) | N/A | 25.8 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 85°F around July 9, short of 90°F on every date, while 137 dates carry a normal low at or below freezing, the coldest 17°F near January 22.
The freezing stretch
The normal low stays at or below 32°F into April 1, then returns to freezing around November 17, covering 137 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
The widest day
July 15 carries the biggest normal gap between afternoon and dawn, 22°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Monroe.
Where Monroe Stands Nationally
Days and nights track unusually close together; the widest normal swing, about 22°F, is narrower than most stations record.
Monroe earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall
Frost Dates & Growing Season
First Fall Freeze
October 23
50% probability date
Last Spring Freeze
April 23
50% probability date
Growing Season
183 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,240
Higher = more heating needed
Cooling Degree Days
770
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside MI closest to Monroe on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (50°F here).
- Cedar Rapids, IA 50°F · 0.0°F off
- Centerville, IA 50°F · 0.0°F off
- Chalmers, IN 50°F · 0.0°F off
- Coulee Dam, WA 50°F · 0.0°F off
Data-derived climate profile
How Monroe's climate pattern fits together
heating led · mid swing
Monroe's energy balance leans toward cold weather: 6,240 annual heating degree days against 770 for cooling. Its 48.1°F seasonal range still makes the monthly rows more useful than the annual average alone.
Monroe's frost-free season lasts about 183 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
July and January mark the typical warm and cold ends of the calendar in Monroe's middle-range seasonal profile. The measured spread is 48.1°F. The annual average is 50°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
A moisture-range label is withheld because Monroe's annual precipitation total is unavailable. Monthly source values remain visible where NOAA provides them, and no annual amount is reconstructed from incomplete data.
These labels group NOAA 1991-2020 normals from Monroe's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. Treat each band as a descriptive range for Monroe, not an official NOAA class or a year-ahead forecast.
Questions about Monroe's climate
How cold does Monroe get in winter? ▼
How much energy does heating and cooling require in Monroe? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Monroe's primary station: MONROE (USC00205563). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 2655020). Match rule for Monroe: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Monroe comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.