Upper Sandusky, Ohio climate: Normal weather by month, frost dates and records
Upper Sandusky's normal year runs from 17°F January nights to 84°F July afternoons, with 40.2 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.1°C, January lows of −8°C, July highs of 29°C, 1,020 mm of precipitation a year.
- NOAA stationUpper Sandusky
- Station IDUSC00338534
- Location40.83°N 83.28°W
- Elevation854 ft (260 m)
- Population6,627
On October 23, the normal high in Upper Sandusky is 61°F and the normal low 39°F, and the chance of measurable rain or snow is 28%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Upper Sandusky.
- Jan 33° 17°
- Feb 37° 19°
- Mar 47° 27°
- Apr 61° 37°
- May 72° 49°
- Jun 81° 59°
- Jul 84° 62°
- Aug 82° 60°
- Sep 77° 52°
- Oct 64° 41°
- Nov 51° 31°
- Dec 38° 23°
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 Upper Sandusky each month?
July is the warmest month, with normal highs of 84°F; January the coldest, with normal lows of 17°F. The most precipitation falls in June (4.60 in), the least in February (2.01 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 33°F | 17°F | 25.2°F | 2.21 | 10 | <1 | 27 | 9 h 30 min |
| February | 37°F | 19°F | 27.8°F | 2.01 | 9 | <1 | 25 | 10 h 40 min |
| March | 47°F | 27°F | 37.1°F | 2.59 | 9 | <1 | 21 | 11 h 50 min |
| April | 61°F | 37°F | 49.1°F | 4.15 | 12 | <1 | 8 | 13 h 20 min |
| May | 72°F | 49°F | 60.2°F | 4.50 | 12 | 1 | 1 | 14 h 30 min |
| June | 81°F | 59°F | 69.7°F | 4.60 | 10 | 4 | <1 | 15 h 10 min |
| July | 84°F | 62°F | 72.9°F | 4.38 | 9 | 6 | <1 | 14 h 50 min |
| August | 82°F | 60°F | 71.0°F | 3.91 | 8 | 4 | <1 | 13 h 50 min |
| September | 77°F | 52°F | 64.7°F | 3.34 | 8 | 2 | <1 | 12 h 30 min |
| October | 64°F | 41°F | 52.7°F | 2.84 | 8 | <1 | 5 | 11 h 10 min |
| November | 51°F | 31°F | 40.6°F | 3.03 | 9 | <1 | 17 | 10 h |
| December | 38°F | 23°F | 30.6°F | 2.61 | 11 | <1 | 26 | 9 h 20 min |
| Year (annual) | 61°F | 40°F | 50.1°F | 40.17 | 114 | 16 | 130 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 1°C | −8°C | −3.8°C | 56 mm |
| February | 3°C | −7°C | −2.3°C | 51 mm |
| March | 8°C | −3°C | 2.8°C | 66 mm |
| April | 16°C | 3°C | 9.5°C | 105 mm |
| May | 22°C | 9°C | 15.7°C | 114 mm |
| June | 27°C | 15°C | 20.9°C | 117 mm |
| July | 29°C | 16°C | 22.7°C | 111 mm |
| August | 28°C | 15°C | 21.7°C | 99 mm |
| September | 25°C | 11°C | 18.2°C | 85 mm |
| October | 18°C | 5°C | 11.5°C | 72 mm |
| November | 10°C | −1°C | 4.8°C | 77 mm |
| December | 3°C | −5°C | −0.8°C | 66 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Bucyrus (16 miles away), gets 23 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00338534; 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 Upper Sandusky?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, September has the fewest days with rain (8).
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 USC00338534.
When is the last frost in Upper Sandusky?
In Upper Sandusky, the last spring frost (32°F) comes after April 29 in half of years and after May 14 in one year in ten; the first autumn frost comes before October 17 in half of years and before October 2 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 291 year in 10 after May 14; 9 in 10 after April 13
- First autumn frost, half of years before
- October 171 year in 10 before October 2; 9 in 10 before October 31
NOAA puts the median frost-free season at 171 days, and the season without a hard freeze (28°F) at 193 days.
A hard freeze (28°F) comes after April 18 in half of springs and before October 28 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Upper Sandusky in zone 6a in ZIP code 43351, the nearest ZIP area.
Frost dates for every NOAA station in Ohio · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00338534; 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 Upper Sandusky?
In a normal year in Upper Sandusky, 16 days a year reach 90°F, 130 nights fall to 32°F or colder and 114 days bring measurable precipitation.
- Days at 90°F or more
- 16a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 130a normal year
- Days that stay below freezing
- 40high of 32°F or less
- Days with 0.01 inch of precipitation
- 114a normal year
The highest temperature in this station's record (since 1893) is 106°F, on August 6, 1918; the lowest is −22°F, on February 13, 1899.
The wettest calendar year on that record is 1981, with 49.04 in; the snowiest season is 1977–78, with 70.9 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00338534; records: ACIS (NOAA Regional Climate Centers), station USC00338534. Records use complete months only; a month missing more than three days is left out.
How sunny is Upper Sandusky?
Over a year 72% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Upper Sandusky, 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 Upper Sandusky need?
A normal year in Upper Sandusky brings 6,160 heating degree days, 15% more than the median U.S. place (5,373), and 779 cooling degree days, 14% 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 3,045 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,233 | 0 |
| February | 1,041 | 0 |
| March | 864 | 1 |
| April | 484 | 7 |
| May | 200 | 53 |
| June | 35 | 174 |
| July | 5 | 248 |
| August | 11 | 197 |
| September | 96 | 87 |
| October | 395 | 12 |
| November | 731 | 0 |
| December | 1,065 | 0 |
| Year (annual) | 6,160 | 779 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00338534. 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 Upper Sandusky's climate compare?
Upper Sandusky is warmer than 17 of the other 98 places with their own NOAA record in Ohio, and wetter than 28. Across the 7,247 U.S. stations with normals, its annual mean of 50.1°F is warmer than 40%.
In the Köppen classification computed from these normals, Upper Sandusky 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 Upper Sandusky share this climate record?
7 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.
- Carey, OH3,490 people · 9 mi NW
- Sycamore, OH768 people · 10 mi NE
- Nevada, OH689 people · 8 mi E
- Wharton, OH315 people · 10 mi W
- Harpster, OH156 people · 7 mi S
- Kirby, OH114 people · 7 mi W
- Marseilles, OH94 people · 11 mi SW
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 Upper Sandusky's climate
What is the coldest month in Upper Sandusky?
January, with a normal high of 33°F and a normal low of 17°F. The warmest is July (84°F by day, 62°F at night).
Does it snow in Upper Sandusky?
Yes. NOAA publishes no 1991-2020 snowfall normal for Upper Sandusky's NOAA station; the nearest record that keeps one, Bucyrus (16 miles away), records 23 inches of snow in a normal year.
What is the rainiest month in Upper Sandusky?
June, with 4.60 in of precipitation in a normal year; the driest is February with 2.01 in.
What plant hardiness zone is Upper Sandusky in?
The USDA's 2023 map puts Upper Sandusky in zone 6a in ZIP code 43351, the nearest ZIP area.
How late can frost come in Upper Sandusky?
In half of years the last 32°F night comes after April 29; 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
- Ohio climateThe statewide normals and every place in the state
- Bucyrus, OH16 miles from this station, 52.3°F a year
- Marion, OH19 miles from this station, 50.8°F a year
- Tiffin, OH21 miles from this station, 50.9°F a year
- Kenton, OH21 miles from this station, 50.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made