Tecumseh, Michigan climate: Normal weather by month, frost dates and records
Tecumseh's normal year runs from 15°F January nights to 86°F July afternoons, with 36.0 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 9.2°C, January lows of −9°C, July highs of 30°C, 915 mm of precipitation a year.
- NOAA stationTecumseh
- Station IDUSC00208080
- Location42.00°N 83.93°W
- Elevation780 ft (238 m)
- From the centerunder 1 mile
- Population8,606
On October 23, the normal high in Tecumseh is 60°F and the normal low 36°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Tecumseh.
- Jan 33° 15°
- Feb 36° 16°
- Mar 46° 24°
- Apr 60° 34°
- May 71° 45°
- Jun 81° 55°
- Jul 86° 59°
- Aug 83° 57°
- Sep 76° 50°
- Oct 63° 39°
- Nov 49° 29°
- Dec 38° 21°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Tecumseh each month?
July is the warmest month, with normal highs of 86°F; January the coldest, with normal lows of 15°F. The most precipitation falls in June (3.85 in), the least in February (2.10 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 33°F | 15°F | 23.7°F | 2.38 | – | <1 | 29 | 9 h 30 min |
| February | 36°F | 16°F | 26.3°F | 2.10 | – | <1 | 27 | 10 h 30 min |
| March | 46°F | 24°F | 35.4°F | 2.41 | – | <1 | 25 | 11 h 50 min |
| April | 60°F | 34°F | 46.8°F | 3.35 | – | <1 | 12 | 13 h 20 min |
| May | 71°F | 45°F | 58.1°F | 3.67 | – | 1 | 2 | 14 h 30 min |
| June | 81°F | 55°F | 68.1°F | 3.85 | – | 4 | <1 | 15 h 10 min |
| July | 86°F | 59°F | 72.3°F | 3.55 | – | 8 | <1 | 15 h |
| August | 83°F | 57°F | 70.0°F | 3.30 | – | 4 | <1 | 14 h |
| September | 76°F | 50°F | 63.0°F | 3.26 | – | 2 | <1 | 12 h 30 min |
| October | 63°F | 39°F | 51.0°F | 3.03 | – | <1 | 8 | 11 h 10 min |
| November | 49°F | 29°F | 38.7°F | 2.85 | – | <1 | 20 | 9 h 50 min |
| December | 38°F | 21°F | 29.6°F | 2.27 | – | <1 | 28 | 9 h 10 min |
| Year (annual) | 60°F | 37°F | 48.6°F | 36.02 | – | 20 | 151 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 0°C | −9°C | −4.6°C | 60 mm |
| February | 2°C | −9°C | −3.2°C | 53 mm |
| March | 8°C | −4°C | 1.9°C | 61 mm |
| April | 15°C | 1°C | 8.2°C | 85 mm |
| May | 22°C | 7°C | 14.5°C | 93 mm |
| June | 27°C | 13°C | 20.1°C | 98 mm |
| July | 30°C | 15°C | 22.4°C | 90 mm |
| August | 28°C | 14°C | 21.1°C | 84 mm |
| September | 25°C | 10°C | 17.2°C | 83 mm |
| October | 17°C | 4°C | 10.6°C | 77 mm |
| November | 9°C | −2°C | 3.7°C | 72 mm |
| December | 3°C | −6°C | −1.3°C | 58 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Adrian (2 mi NNE) (7 miles away), gets 26 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00208080; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Tecumseh?
Normal highs sit between 65°F and 85°F in May, June, August and September.
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00208080.
When is the last frost in Tecumseh?
In Tecumseh, the last spring frost (32°F) comes after May 3 in half of years and after May 18 in one year in ten; the first autumn frost comes before October 13 in half of years and before September 30 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- May 31 year in 10 after May 18; 9 in 10 after April 20
- First autumn frost, half of years before
- October 131 year in 10 before September 30; 9 in 10 before October 25
NOAA puts the median frost-free season at 160 days, and the season without a hard freeze (28°F) at 184 days.
A hard freeze (28°F) comes after April 23 in half of springs and before October 25 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Tecumseh in zone 6a in ZIP code 49286, the nearest ZIP area.
Frost dates for every NOAA station in Michigan · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00208080; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Tecumseh?
In a normal year in Tecumseh, 20 days a year reach 90°F and 151 nights fall to 32°F or colder.
- Days at 90°F or more
- 20a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 151a normal year
- Days that stay below freezing
- 40high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00208080.
How sunny is Tecumseh?
Over a year 71% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Tecumseh, 3.8 kWh per square metre a day. July is the sunniest month (80%) and December the cloudiest (54%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 59% | 1.6 |
| February | 62% | 2.4 |
| March | 66% | 3.5 |
| April | 68% | 4.7 |
| May | 70% | 5.5 |
| June | 76% | 6.2 |
| July | 80% | 6.2 |
| August | 78% | 5.3 |
| September | 77% | 4.3 |
| October | 68% | 2.8 |
| November | 63% | 1.8 |
| December | 54% | 1.2 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Tecumseh need?
A normal year in Tecumseh brings 6,580 heating degree days, 22% more than the median U.S. place (5,373), and 631 cooling degree days, 30% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,734 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,279 | 0 |
| February | 1,084 | 0 |
| March | 919 | 0 |
| April | 550 | 2 |
| May | 244 | 28 |
| June | 42 | 135 |
| July | 6 | 231 |
| August | 15 | 168 |
| September | 119 | 60 |
| October | 439 | 6 |
| November | 788 | 0 |
| December | 1,097 | 0 |
| Year (annual) | 6,580 | 631 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00208080. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
How does Tecumseh's climate compare?
Tecumseh is warmer than 114 of the other 139 places with their own NOAA record in Michigan, and wetter than 97. Across the 7,247 U.S. stations with normals, its annual mean of 48.6°F is warmer than 34%.
In the Köppen classification computed from these normals, Tecumseh is Dfa: continental, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Tecumseh share this climate record?
2 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Clinton, MI2,485 people · 5 mi N
- Britton, MI560 people · 5 mi E
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Tecumseh's climate
What is the coldest month in Tecumseh?
January, with a normal high of 33°F and a normal low of 15°F. The warmest is July (86°F by day, 59°F at night).
Does it snow in Tecumseh?
Yes. NOAA publishes no 1991-2020 snowfall normal for Tecumseh's NOAA station; the nearest record that keeps one, Adrian (2 mi NNE) (7 miles away), records 26 inches of snow in a normal year.
What is the rainiest month in Tecumseh?
June, with 3.85 in of precipitation in a normal year; the driest is February with 2.10 in.
What plant hardiness zone is Tecumseh in?
The USDA's 2023 map puts Tecumseh in zone 6a in ZIP code 49286, the nearest ZIP area.
How late can frost come in Tecumseh?
In half of years the last 32°F night comes after May 3; in one year in ten it comes after May 18. Waiting until May 18 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Michigan climateThe statewide normals and every place in the state
- Tipton (2 mi WNW), MI9 miles from this station, 47.5°F a year
- Manchester, MI11 miles from this station, 48.3°F a year
- Blissfield, MI12 miles from this station, 48.6°F a year
- Adrian, MI12 miles from this station, 49.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made