Wooster, Ohio climate: Normal weather by month, frost dates and records
Wooster's normal year runs from 20°F January nights to 81°F July afternoons, with 41.3 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.1°C, January lows of −7°C, July highs of 27°C, 1,049 mm of precipitation a year.
- NOAA stationWooster (3 mi SSE)
- Station IDUSW00054856
- Location40.76°N 81.91°W
- Elevation1,102 ft (336 m)
- Population26,982
On October 23, the normal high in Wooster is 59°F and the normal low 40°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Wooster.
- Jan 35° 20°
- Feb 37° 21°
- Mar 47° 29°
- Apr 60° 38°
- May 70° 50°
- Jun 78° 59°
- Jul 81° 61°
- Aug 80° 60°
- Sep 74° 53°
- Oct 62° 43°
- Nov 50° 33°
- Dec 39° 25°
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 Wooster each month?
July is the warmest month, with normal highs of 81°F; January the coldest, with normal lows of 20°F. The most precipitation falls in July (4.77 in), the least in February (2.42 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 35°F | 20°F | 27.1°F | 2.92 | – | <1 | 24 | 9 h 30 min |
| February | 37°F | 21°F | 29.2°F | 2.42 | – | <1 | 20 | 10 h 40 min |
| March | 47°F | 29°F | 37.6°F | 3.10 | – | <1 | 21 | 11 h 50 min |
| April | 60°F | 38°F | 49.3°F | 3.75 | – | <1 | 9 | 13 h 20 min |
| May | 70°F | 50°F | 60.2°F | 3.92 | – | <1 | 1 | 14 h 30 min |
| June | 78°F | 59°F | 68.5°F | 4.72 | – | <1 | <1 | 15 h |
| July | 81°F | 61°F | 71.4°F | 4.77 | – | 1 | <1 | 14 h 50 min |
| August | 80°F | 60°F | 70.0°F | 3.22 | – | <1 | <1 | 13 h 50 min |
| September | 74°F | 53°F | 63.6°F | 3.34 | – | 1 | <1 | 12 h 30 min |
| October | 62°F | 43°F | 52.4°F | 3.16 | – | <1 | 2 | 11 h 10 min |
| November | 50°F | 33°F | 41.5°F | 2.88 | – | <1 | 16 | 10 h |
| December | 39°F | 25°F | 32.1°F | 3.11 | – | <1 | 25 | 9 h 20 min |
| Year (annual) | 59°F | 41°F | 50.2°F | 41.31 | – | 2 | 118 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 1°C | −7°C | −2.7°C | 74 mm |
| February | 3°C | −6°C | −1.6°C | 61 mm |
| March | 8°C | −2°C | 3.1°C | 79 mm |
| April | 16°C | 3°C | 9.6°C | 95 mm |
| May | 21°C | 10°C | 15.7°C | 100 mm |
| June | 26°C | 15°C | 20.3°C | 120 mm |
| July | 27°C | 16°C | 21.9°C | 121 mm |
| August | 27°C | 16°C | 21.1°C | 82 mm |
| September | 24°C | 12°C | 17.6°C | 85 mm |
| October | 17°C | 6°C | 11.3°C | 80 mm |
| November | 10°C | 1°C | 5.3°C | 73 mm |
| December | 4°C | −4°C | 0.1°C | 79 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. Wooster's own co-op station Wooster Experiment Station does: 29 inches of snow in a normal year (see the other stations below).
Source: NOAA NCEI 1991-2020 monthly normals, station USW00054856; 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 Wooster?
Normal highs sit between 65°F and 85°F in May, June, July, 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 USW00054856.
When is the last frost in Wooster?
In Wooster, the last spring frost (32°F) comes after April 24 in half of years and after May 12 in one year in ten; the first autumn frost comes before October 21 in half of years and before October 6 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
- April 241 year in 10 after May 12; 9 in 10 after April 10
- First autumn frost, half of years before
- October 211 year in 10 before October 6; 9 in 10 before November 3
NOAA puts the median frost-free season at 177 days, and the season without a hard freeze (28°F) at 203 days.
A hard freeze (28°F) comes after April 13 in half of springs and before November 2 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Wooster in zone 6a in ZIP code 44691.
Frost dates for every NOAA station in Ohio · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00054856; 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 Wooster?
In a normal year in Wooster, 2 days a year reach 90°F and 118 nights fall to 32°F or colder.
- Days at 90°F or more
- 2a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 118a normal year
- Days that stay below freezing
- 35high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USW00054856.
How sunny is Wooster?
Over a year 70% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Wooster, 3.8 kWh per square metre a day. August is the sunniest month (79%) and December the cloudiest (53%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 53% | 1.6 |
| February | 59% | 2.4 |
| March | 62% | 3.4 |
| April | 67% | 4.7 |
| May | 70% | 5.4 |
| June | 75% | 6.0 |
| July | 78% | 6.0 |
| August | 79% | 5.4 |
| September | 77% | 4.4 |
| October | 68% | 2.9 |
| November | 65% | 2.0 |
| December | 53% | 1.3 |
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 Wooster need?
A normal year in Wooster brings 5,963 heating degree days, 11% more than the median U.S. place (5,373), and 605 cooling degree days, 33% 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 2,847 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,176 | 0 |
| February | 1,004 | 0 |
| March | 851 | 0 |
| April | 478 | 5 |
| May | 181 | 30 |
| June | 25 | 128 |
| July | 3 | 201 |
| August | 12 | 166 |
| September | 109 | 67 |
| October | 399 | 7 |
| November | 706 | 1 |
| December | 1,021 | 0 |
| Year (annual) | 5,963 | 605 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00054856. 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.
Has Wooster been warmer than normal lately?
2025 averaged 50.8°F, 0.6°F above the 1991-2020 normal of 50.2°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 52.0°F | +1.8°F | 33.45 |
| 2022 | 50.6°F | +0.4°F | 44.88 |
| 2023 | 52.4°F | +2.2°F | 37.23 |
| 2024 | 53.7°F | +3.5°F | 35.81 |
| 2025 | 50.8°F | +0.6°F | 36.50 |
Source: observed years: ACIS, station USW00054856. A year counts only with all twelve months complete.
How does Wooster's climate compare?
Wooster is warmer than 20 of the other 98 places with their own NOAA record in Ohio, and wetter than 43. Across the 7,247 U.S. stations with normals, its annual mean of 50.2°F is warmer than 41%.
In the Köppen classification computed from these normals, Wooster is Dfb: continental, no dry season, warm 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 Wooster share this climate record?
12 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.
- Orrville, OH8,442 people · 9 mi NE
- Brewster, OH2,104 people · 16 mi E
- Dalton, OH1,927 people · 11 mi E
- Shreve, OH1,496 people · 8 mi SW
- Smithville, OH1,338 people · 7 mi N
- Apple Creek, OH1,186 people · 4 mi E
- Kidron, OH858 people · 9 mi E
- Marshallville, OH792 people · 13 mi NE
- Fredericksburg, OH404 people · 6 mi S
- New Pittsburg, OH310 people · 11 mi NW
- Wilmot, OH279 people · 16 mi SE
- Mount Eaton, OH168 people · 12 mi SE
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do Wooster's other NOAA stations record?
2 more NOAA stations keep 1991-2020 normals in or near Wooster. This page uses Wooster (3 mi SSE); the others differ by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Wooster Experiment Station USC00339312 | 1 mi N | 1,020 ft | 50.2°F | 18°F | 84°F | 42.0 | 29 | April 30 |
| Wooster Wayne County Airport USW00004842 | 8 mi N | 1,137 ft | 49.5°F | 18°F | 82°F | 36.9 | – | April 29 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Wooster's climate
What is the coldest month in Wooster?
January, with a normal high of 35°F and a normal low of 20°F. The warmest is July (81°F by day, 61°F at night).
Does it snow in Wooster?
Yes. NOAA publishes no 1991-2020 snowfall normal for Wooster's NOAA station; Wooster's own co-op station Wooster Experiment Station records 29 inches of snow in a normal year.
What is the rainiest month in Wooster?
July, with 4.77 in of precipitation in a normal year; the driest is February with 2.42 in.
What plant hardiness zone is Wooster in?
The USDA's 2023 map puts Wooster in zone 6a in ZIP code 44691.
How late can frost come in Wooster?
In half of years the last 32°F night comes after April 24; in one year in ten it comes after May 12. Waiting until May 12 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Ohio climateThe statewide normals and every place in the state
- Millersburg, OH16 miles from this station, 50.2°F a year
- Chippewa Lake, OH20 miles from this station, 48.6°F a year
- Ashland, OH24 miles from this station, 49.7°F a year
- Akron, OH27 miles from this station, 51.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made