Zanesville, Ohio climate: Normal weather by month, frost dates and records
Zanesville's normal year runs from 22°F January nights to 85°F July afternoons, with 38.6 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 11.7°C, January lows of −6°C, July highs of 29°C, 980 mm of precipitation a year.
- NOAA stationZanesville Municipal Airport
- Station IDUSW00093824
- Location39.94°N 81.89°W
- Elevation880 ft (268 m)
- From the center6 miles
- Population24,916
On October 14, the normal high in Zanesville is 66°F and the normal low 44°F, and the chance of measurable rain or snow is 33%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Zanesville.
- Jan 38° 22°
- Feb 42° 24°
- Mar 52° 31°
- Apr 65° 41°
- May 74° 51°
- Jun 81° 60°
- Jul 85° 64°
- Aug 84° 62°
- Sep 78° 54°
- Oct 66° 43°
- Nov 53° 34°
- Dec 43° 27°
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 Zanesville each month?
July is the warmest month, with normal highs of 85°F; January the coldest, with normal lows of 22°F. The most precipitation falls in June (4.29 in), the least in February (2.31 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 38°F | 22°F | 30.1°F | 2.80 | 13 | <1 | 26 | 9 h 40 min |
| February | 42°F | 24°F | 32.9°F | 2.31 | 11 | <1 | 23 | 10 h 40 min |
| March | 52°F | 31°F | 41.6°F | 3.24 | 12 | <1 | 18 | 11 h 50 min |
| April | 65°F | 41°F | 52.8°F | 3.86 | 13 | <1 | 7 | 13 h 10 min |
| May | 74°F | 51°F | 62.3°F | 3.79 | 13 | <1 | 1 | 14 h 20 min |
| June | 81°F | 60°F | 70.5°F | 4.29 | 12 | 2 | <1 | 15 h |
| July | 85°F | 64°F | 74.2°F | 3.73 | 11 | 5 | <1 | 14 h 50 min |
| August | 84°F | 62°F | 72.7°F | 3.20 | 10 | 4 | <1 | 13 h 50 min |
| September | 78°F | 54°F | 65.9°F | 3.12 | 9 | 2 | <1 | 12 h 30 min |
| October | 66°F | 43°F | 54.3°F | 2.81 | 10 | <1 | 4 | 11 h 10 min |
| November | 53°F | 34°F | 43.4°F | 2.79 | 10 | <1 | 15 | 10 h |
| December | 43°F | 27°F | 34.7°F | 2.63 | 12 | <1 | 23 | 9 h 20 min |
| Year (annual) | 63°F | 43°F | 53.0°F | 38.57 | 138 | 13 | 116 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 4°C | −6°C | −1.1°C | 71 mm |
| February | 6°C | −5°C | 0.5°C | 59 mm |
| March | 11°C | 0°C | 5.3°C | 82 mm |
| April | 18°C | 5°C | 11.6°C | 98 mm |
| May | 23°C | 11°C | 16.8°C | 96 mm |
| June | 27°C | 15°C | 21.4°C | 109 mm |
| July | 29°C | 18°C | 23.4°C | 95 mm |
| August | 29°C | 17°C | 22.6°C | 81 mm |
| September | 25°C | 12°C | 18.8°C | 79 mm |
| October | 19°C | 6°C | 12.4°C | 71 mm |
| November | 12°C | 1°C | 6.3°C | 71 mm |
| December | 6°C | −3°C | 1.5°C | 67 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Cambridge (17 miles away), gets 17 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00093824; 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 Zanesville?
Normal highs sit between 65°F and 85°F in May, June, July, August, September and October. Of those, September has the fewest days with rain (9).
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 USW00093824.
When is the last frost in Zanesville?
In Zanesville, the last spring frost (32°F) comes after April 26 in half of years and after May 14 in one year in ten; the first autumn frost comes before October 19 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 261 year in 10 after May 14; 9 in 10 after April 11
- First autumn frost, half of years before
- October 191 year in 10 before October 6; 9 in 10 before October 31
NOAA puts the median frost-free season at 177 days, and the season without a hard freeze (28°F) at 200 days.
A hard freeze (28°F) comes after April 13 in half of springs and before October 31 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Zanesville in zone 6b in ZIP code 43701, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Zanesville's NOAA station is in zone 6b: the coldest night of a typical year reaches −5°F (30 complete years).
Frost dates for every NOAA station in Ohio · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00093824; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. 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 Zanesville?
In a normal year in Zanesville, 13 days a year reach 90°F, 116 nights fall to 32°F or colder and 138 days bring measurable precipitation.
- Days at 90°F or more
- 13a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 116a normal year
- Days that stay below freezing
- 27high of 32°F or less
- Days with 0.01 inch of precipitation
- 138a normal year
The highest temperature in Zanesville's official record (kept by the National Weather Service since 1895) is 106°F, on July 25, 1934; the lowest is −25°F, on January 19, 1994.
The wettest calendar year on that record is 1990, with 54.47 in; the snowiest season is 1935–36, with 56.4 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USW00093824; records: ACIS (NOAA Regional Climate Centers), NWS threaded record ZZVthr. Records use complete months only; a month missing more than three days is left out.
How humid and windy is Zanesville, and how clear are its skies?
The summer (June-August) dew point averages 62°F. The muggiest month is July, with an average dew point of 63°F; the driest air comes in January (21°F). February is the windiest month (7.8 mph on average), and August has the most clear or nearly clear hours (66%).
| Month | Dew point | Humidity | Afternoon humidity | Wind | Clear or few clouds | Overcast |
|---|---|---|---|---|---|---|
| January | 21°F | 71% | 60% | 7.4 mph | 40% | 49% |
| February | 26°F | 67% | 54% | 7.8 mph | 38% | 50% |
| March | 34°F | 61% | 46% | 7.8 mph | 49% | 38% |
| April | 43°F | 62% | 46% | 6.8 mph | 51% | 31% |
| May | 56°F | 70% | 52% | 5.6 mph | 54% | 25% |
| June | 63°F | 73% | 53% | 5.0 mph | 61% | 17% |
| July | 63°F | 74% | 53% | 4.5 mph | 62% | 15% |
| August | 61°F | 74% | 52% | 4.4 mph | 66% | 16% |
| September | 51°F | 74% | 51% | 5.2 mph | 61% | 24% |
| October | 38°F | 68% | 51% | 6.3 mph | 52% | 36% |
| November | 30°F | 71% | 58% | 7.2 mph | 42% | 48% |
| December | 25°F | 74% | 64% | 7.5 mph | 38% | 54% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00093824. Monthly averages of all hours; afternoon humidity at 3 p.m. local standard time; sky as the share of hours NOAA's observations rate clear or few clouds (a dash where NOAA publishes no sky value).
How sunny is Zanesville?
Over a year 71% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Zanesville, 3.9 kWh per square metre a day. August is the sunniest month (79%) and December the cloudiest (56%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 57% | 1.7 |
| February | 59% | 2.5 |
| March | 64% | 3.6 |
| April | 69% | 4.8 |
| May | 71% | 5.5 |
| June | 76% | 6.1 |
| July | 77% | 5.9 |
| August | 79% | 5.4 |
| September | 78% | 4.5 |
| October | 70% | 3.1 |
| November | 68% | 2.2 |
| December | 56% | 1.5 |
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 Zanesville need?
A normal year in Zanesville brings 5,268 heating degree days, 2% fewer than the median U.S. place (5,373), and 914 cooling degree days, 1% more 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 3,402 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,083 | 0 |
| February | 899 | 0 |
| March | 725 | 1 |
| April | 376 | 10 |
| May | 150 | 67 |
| June | 22 | 187 |
| July | 2 | 287 |
| August | 4 | 243 |
| September | 75 | 103 |
| October | 344 | 14 |
| November | 647 | 0 |
| December | 941 | 0 |
| Year (annual) | 5,268 | 914 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00093824. 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 Zanesville been warmer than normal lately?
2025 averaged 52.9°F, 0.1°F below the 1991-2020 normal of 53.0°F. 3 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 54.3°F | +1.3°F | 35.33 |
| 2022 | 52.8°F | −0.2°F | 44.26 |
| 2023 | 54.8°F | +1.8°F | 37.36 |
| 2024 | 56.4°F | +3.4°F | 31.51 |
| 2025 | 52.9°F | −0.1°F | 35.32 |
Over 78 complete years from 1946 to 2025, the station's annual mean temperature rose at a fitted 4.2°F per century (+0.23°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USW00093824; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Zanesville's climate compare?
Zanesville is warmer than 77 of the other 98 places with their own NOAA record in Ohio, and wetter than 19. Across the 7,247 U.S. stations with normals, its annual mean of 53.0°F is warmer than 54%.
In the Köppen classification computed from these normals, Zanesville 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 Zanesville share this climate record?
4 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.
- North Zanesville, OH2,836 people · 6 mi NW
- Pleasant Grove, OH1,384 people · 3 mi W
- Adamsville, OH139 people · 9 mi N
- Norwich, OH98 people · 6 mi NE
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 Zanesville's climate
What is the coldest month in Zanesville?
January, with a normal high of 38°F and a normal low of 22°F. The warmest is July (85°F by day, 64°F at night).
Does it snow in Zanesville?
Yes. NOAA publishes no 1991-2020 snowfall normal for Zanesville's NOAA station; the nearest record that keeps one, Cambridge (17 miles away), records 17 inches of snow in a normal year.
What is the rainiest month in Zanesville?
June, with 4.29 in of precipitation in a normal year; the driest is February with 2.31 in.
What plant hardiness zone is Zanesville in?
The USDA's 2023 map puts Zanesville in zone 6b in ZIP code 43701, the nearest ZIP area. By the same method at Zanesville's NOAA station, the coldest night of a typical year reaches −5°F (30 years, 1991-2020): zone 6b.
How late can frost come in Zanesville?
In half of years the last 32°F night comes after April 26; in one year in ten it comes after May 14. Waiting until May 14 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Zanesville in OctoberThis month day by day, its records and recent years
- Ohio climateThe statewide normals and every place in the state
- Philo, OH7 miles from this station, 53.8°F a year
- Cambridge, OH17 miles from this station, 52.7°F a year
- McConnellsville Lake 7, OH21 miles from this station, 52.2°F a year
- Coshocton, OH21 miles from this station, 51.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made