Marysville, Ohio climate: Normal weather by month, frost dates and records
Marysville's normal year runs from 21°F January nights to 85°F July afternoons, with 40.5 inches of precipitation and 24 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 11.3°C, January lows of −6°C, July highs of 29°C, 1,028 mm of precipitation a year.
- NOAA stationMarysville
- Station IDUSC00334979
- Location40.19°N 83.27°W
- Elevation970 ft (296 m)
- Population29,276
On October 23, the normal high in Marysville is 62°F and the normal low 41°F, and the chance of measurable rain or snow is 30%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Marysville.
- Jan 35° 21°
- Feb 39° 23°
- Mar 50° 31°
- Apr 63° 41°
- May 74° 52°
- Jun 82° 61°
- Jul 85° 64°
- Aug 84° 62°
- Sep 78° 55°
- Oct 65° 44°
- Nov 51° 34°
- Dec 40° 26°
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 Marysville each month?
July is the warmest month, with normal highs of 85°F; January the coldest, with normal lows of 21°F. The most precipitation falls in June (4.85 in), the least in February (2.29 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 35°F | 21°F | 27.8°F | 2.68 | 7.0 | 11 | <1 | 26 | 9 h 40 min |
| February | 39°F | 23°F | 30.9°F | 2.29 | 6.6 | 10 | <1 | 23 | 10 h 40 min |
| March | 50°F | 31°F | 40.2°F | 3.02 | 4.1 | 11 | <1 | 19 | 11 h 50 min |
| April | 63°F | 41°F | 52.0°F | 3.86 | 0.1 | 12 | <1 | 5 | 13 h 10 min |
| May | 74°F | 52°F | 62.7°F | 4.52 | 0.0 | 14 | 1 | <1 | 14 h 20 min |
| June | 82°F | 61°F | 71.2°F | 4.85 | 0.0 | 12 | 4 | <1 | 15 h |
| July | 85°F | 64°F | 74.7°F | 4.15 | 0.0 | 10 | 6 | <1 | 14 h 50 min |
| August | 84°F | 62°F | 73.0°F | 3.41 | 0.0 | 9 | 5 | <1 | 13 h 50 min |
| September | 78°F | 55°F | 66.1°F | 3.20 | 0.0 | 9 | 2 | <1 | 12 h 30 min |
| October | 65°F | 44°F | 54.4°F | 2.72 | 0.0 | 9 | <1 | 2 | 11 h 10 min |
| November | 51°F | 34°F | 42.3°F | 2.90 | 0.7 | 10 | <1 | 14 | 10 h |
| December | 40°F | 26°F | 32.9°F | 2.88 | 5.5 | 11 | <1 | 24 | 9 h 20 min |
| Year (annual) | 62°F | 43°F | 52.3°F | 40.48 | 24.0 | 126 | 18 | 114 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 2°C | −6°C | −2.3°C | 68 mm | 18 cm |
| February | 4°C | −5°C | −0.6°C | 58 mm | 17 cm |
| March | 10°C | −1°C | 4.6°C | 77 mm | 10 cm |
| April | 17°C | 5°C | 11.1°C | 98 mm | 0 cm |
| May | 23°C | 11°C | 17.1°C | 115 mm | 0 cm |
| June | 28°C | 16°C | 21.8°C | 123 mm | 0 cm |
| July | 29°C | 18°C | 23.7°C | 105 mm | 0 cm |
| August | 29°C | 17°C | 22.8°C | 87 mm | 0 cm |
| September | 25°C | 13°C | 18.9°C | 81 mm | 0 cm |
| October | 18°C | 7°C | 12.4°C | 69 mm | 0 cm |
| November | 11°C | 1°C | 5.7°C | 74 mm | 2 cm |
| December | 4°C | −3°C | 0.5°C | 73 mm | 14 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00334979; 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 Marysville?
Normal highs sit between 65°F and 85°F in May, June, July, August, September and October. Of those, August 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 USC00334979.
When is the last frost in Marysville?
In Marysville, the last spring frost (32°F) comes after April 19 in half of years and after May 5 in one year in ten; the first autumn frost comes before October 26 in half of years and before October 13 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 191 year in 10 after May 5; 9 in 10 after April 5
- First autumn frost, half of years before
- October 261 year in 10 before October 13; 9 in 10 before November 7
NOAA puts the median frost-free season at 188 days, and the season without a hard freeze (28°F) at 211 days.
A hard freeze (28°F) comes after April 7 in half of springs and before November 6 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Marysville in zone 6a in ZIP code 43040, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Marysville's NOAA station is in zone 6b: the coldest night of a typical year reaches −4°F (25 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Ohio · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00334979; 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 Marysville?
In a normal year in Marysville, 18 days a year reach 90°F, 114 nights fall to 32°F or colder and 126 days bring measurable precipitation.
- Days at 90°F or more
- 18a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 114a normal year
- Days that stay below freezing
- 34high of 32°F or less
- Days with 0.01 inch of precipitation
- 126a normal year
- Days with 1 inch of snow or more
- 9a normal year
The highest temperature in this station's record (since 1917) is 109°F, on July 14, 1936; the lowest is −23°F, on January 10, 1982.
The wettest calendar year on that record is 2011, with 55.43 in; the snowiest season is 1935–36, with 50.8 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00334979; records: ACIS (NOAA Regional Climate Centers), station USC00334979. Records use complete months only; a month missing more than three days is left out.
How sunny is Marysville?
Over a year 72% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Marysville, 3.9 kWh per square metre a day. August is the sunniest month (81%) and December the cloudiest (56%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 57% | 1.7 |
| February | 63% | 2.6 |
| March | 63% | 3.5 |
| April | 69% | 4.8 |
| May | 72% | 5.5 |
| June | 77% | 6.2 |
| July | 80% | 6.2 |
| August | 81% | 5.6 |
| September | 78% | 4.5 |
| October | 70% | 3.0 |
| November | 67% | 2.1 |
| December | 56% | 1.4 |
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 Marysville need?
A normal year in Marysville brings 5,546 heating degree days, 3% more than the median U.S. place (5,373), and 968 cooling degree days, 7% 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 3,424 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,153 | 0 |
| February | 955 | 0 |
| March | 770 | 1 |
| April | 400 | 10 |
| May | 147 | 76 |
| June | 19 | 207 |
| July | 1 | 300 |
| August | 5 | 251 |
| September | 75 | 108 |
| October | 343 | 14 |
| November | 681 | 0 |
| December | 997 | 0 |
| Year (annual) | 5,546 | 968 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00334979. 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 Marysville been warmer than normal lately?
2024 averaged 54.9°F, 2.6°F above the 1991-2020 normal of 52.3°F. 3 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 52.9°F | +0.6°F | 41.61 | 21.7 |
| 2022 | 51.2°F | −1.1°F | 43.95 | 12.7 |
| 2023 | 53.5°F | +1.2°F | 38.68 | 8.0 |
| 2024 | 54.9°F | +2.6°F | 37.97 | 10.5 |
Over 94 complete years from 1919 to 2024, the station's annual mean temperature rose at a fitted 0.3°F per century (+0.02°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00334979; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Marysville's climate compare?
Marysville is warmer than 65 of the other 98 places with their own NOAA record in Ohio, and wetter than 34. Across the 7,247 U.S. stations with normals, its annual mean of 52.3°F is warmer than 51%.
In the Köppen classification computed from these normals, Marysville 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 Marysville share this climate record?
11 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.
- Delaware, OH46,521 people · 12 mi NE
- Plain City, OH4,374 people · 6 mi S
- Richwood, OH2,575 people · 16 mi N
- New California, OH1,810 people · 4 mi SE
- Ostrander, OH1,227 people · 6 mi NE
- Milford Center, OH932 people · 9 mi W
- Raymond, OH420 people · 15 mi NW
- Magnetic Springs, OH302 people · 11 mi N
- Woodstock, OH291 people · 14 mi W
- Unionville Center, OH235 people · 6 mi SW
- Radnor, OH188 people · 15 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 Marysville's climate
What is the coldest month in Marysville?
January, with a normal high of 35°F and a normal low of 21°F. The warmest is July (85°F by day, 64°F at night).
Does it snow in Marysville?
Yes: 24 inches in a normal year, falling on 18 days with 0.1 inch or more, the most in January (7.0 inches).
What is the rainiest month in Marysville?
June, with 4.85 in of precipitation in a normal year; the driest is February with 2.29 in.
What plant hardiness zone is Marysville in?
The USDA's 2023 map puts Marysville in zone 6a in ZIP code 43040, the nearest ZIP area. By the same method at Marysville's NOAA station, the coldest night of a typical year reaches −4°F (25 years, 1991-2020): zone 6b.
How late can frost come in Marysville?
In half of years the last 32°F night comes after April 19; in one year in ten it comes after May 5. Waiting until May 5 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Ohio climateThe statewide normals and every place in the state
- Columbus Ohio State University Airport, OH13 miles from this station, 52.4°F a year
- Columbus WCMH, OH17 miles from this station, 52.8°F a year
- Westerville, OH17 miles from this station, 53.9°F a year
- London, OH24 miles from this station, 50.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made