Springfield, Ohio climate: Normal weather by month, frost dates and records
Springfield's normal year runs from 19°F January nights to 84°F July afternoons, with 40.3 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.7°C, January lows of −7°C, July highs of 29°C, 1,022 mm of precipitation a year.
- NOAA stationSpringfield Water Treatment Plant
- Station IDUSC00337935
- Location39.97°N 83.81°W
- Elevation951 ft (290 m)
- From the center3 miles
- Population58,138
On October 14, the normal high in Springfield is 66°F and the normal low 42°F, and the chance of measurable rain or snow is 32%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Springfield.
- Jan 36° 19°
- Feb 40° 20°
- Mar 50° 28°
- Apr 63° 38°
- May 73° 49°
- Jun 81° 59°
- Jul 84° 62°
- Aug 83° 60°
- Sep 78° 52°
- Oct 65° 41°
- Nov 52° 31°
- Dec 41° 24°
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 Springfield each month?
July is the warmest month, with normal highs of 84°F; January the coldest, with normal lows of 19°F. The most precipitation falls in May (4.59 in), the least in February (2.10 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 36°F | 19°F | 27.2°F | 2.69 | 12 | <1 | 27 | 9 h 40 min |
| February | 40°F | 20°F | 29.9°F | 2.10 | 9 | <1 | 24 | 10 h 40 min |
| March | 50°F | 28°F | 39.0°F | 2.94 | 10 | <1 | 21 | 11 h 50 min |
| April | 63°F | 38°F | 50.4°F | 3.96 | 13 | <1 | 8 | 13 h 10 min |
| May | 73°F | 49°F | 61.0°F | 4.59 | 14 | <1 | 1 | 14 h 20 min |
| June | 81°F | 59°F | 70.0°F | 4.48 | 13 | 2 | <1 | 15 h |
| July | 84°F | 62°F | 72.9°F | 4.55 | 11 | 4 | <1 | 14 h 50 min |
| August | 83°F | 60°F | 71.4°F | 3.28 | 9 | 3 | <1 | 13 h 50 min |
| September | 78°F | 52°F | 64.9°F | 3.39 | 9 | 2 | <1 | 12 h 30 min |
| October | 65°F | 41°F | 53.3°F | 2.83 | 10 | <1 | 5 | 11 h 10 min |
| November | 52°F | 31°F | 41.6°F | 2.80 | 10 | <1 | 17 | 10 h |
| December | 41°F | 24°F | 32.5°F | 2.64 | 11 | <1 | 24 | 9 h 20 min |
| Year (annual) | 62°F | 40°F | 51.2°F | 40.25 | 131 | 12 | 126 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 2°C | −7°C | −2.7°C | 68 mm |
| February | 4°C | −7°C | −1.2°C | 53 mm |
| March | 10°C | −2°C | 3.9°C | 75 mm |
| April | 17°C | 3°C | 10.2°C | 101 mm |
| May | 23°C | 10°C | 16.1°C | 117 mm |
| June | 27°C | 15°C | 21.1°C | 114 mm |
| July | 29°C | 17°C | 22.7°C | 116 mm |
| August | 28°C | 15°C | 21.9°C | 83 mm |
| September | 25°C | 11°C | 18.3°C | 86 mm |
| October | 19°C | 5°C | 11.8°C | 72 mm |
| November | 11°C | 0°C | 5.3°C | 71 mm |
| December | 5°C | −4°C | 0.3°C | 67 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, New Carlisle (12 miles away), gets 19 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00337935; 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 Springfield?
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 USC00337935.
When is the last frost in Springfield?
In Springfield, the last spring frost (32°F) comes after April 25 in half of years and after May 12 in one year in ten; the first autumn frost comes before October 19 in half of years and before October 4 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 251 year in 10 after May 12; 9 in 10 after April 12
- First autumn frost, half of years before
- October 191 year in 10 before October 4; 9 in 10 before November 1
NOAA puts the median frost-free season at 175 days, and the season without a hard freeze (28°F) at 197 days.
A hard freeze (28°F) comes after April 15 in half of springs and before October 30 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Springfield in zone 6a across its 4 ZIP code areas (6a in 45503, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, Springfield's NOAA station is in zone 6a: the coldest night of a typical year reaches −6°F (26 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 USC00337935; 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.
What hardiness zone is each Springfield ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. Springfield's 4 ZIP code areas are all in zone 6a. Each ZIP's frost dates are in the frost tool.
Source: USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; ZIP areas in the place: Census Bureau 2020 ZCTA-to-place relationship file. A ZIP area counts when at least a tenth of its land (and 0.5 km²) lies in the place.
How hot and how cold does it get in Springfield?
In a normal year in Springfield, 12 days a year reach 90°F, 126 nights fall to 32°F or colder and 131 days bring measurable precipitation.
- Days at 90°F or more
- 12a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 126a normal year
- Days that stay below freezing
- 33high of 32°F or less
- Days with 0.01 inch of precipitation
- 131a normal year
The highest temperature in this station's record (since 1969) is 100°F, on August 21, 1983; the lowest is −26°F, on January 19, 1994.
The wettest calendar year on that record is 2011, with 53.51 in; the snowiest season is 2009–10, with 33.7 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00337935; records: ACIS (NOAA Regional Climate Centers), station USC00337935. Records use complete months only; a month missing more than three days is left out.
How sunny is Springfield?
Over a year 72% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Springfield, 4.0 kWh per square metre a day. August is the sunniest month (81%) and December the cloudiest (57%). Among the 459 U.S. places of 50,000 or more, that ranks tied 385th (with 30 others) in sunshine.
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 58% | 1.8 |
| February | 62% | 2.6 |
| March | 65% | 3.6 |
| April | 71% | 4.9 |
| May | 73% | 5.6 |
| June | 78% | 6.2 |
| July | 79% | 6.0 |
| August | 81% | 5.5 |
| September | 79% | 4.6 |
| October | 72% | 3.2 |
| November | 69% | 2.2 |
| December | 57% | 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 Springfield need?
A normal year in Springfield brings 5,808 heating degree days, 8% more than the median U.S. place (5,373), and 802 cooling degree days, 12% 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 3,154 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,172 | 0 |
| February | 984 | 0 |
| March | 807 | 1 |
| April | 445 | 7 |
| May | 182 | 58 |
| June | 28 | 177 |
| July | 5 | 248 |
| August | 8 | 208 |
| September | 92 | 90 |
| October | 375 | 12 |
| November | 702 | 0 |
| December | 1,009 | 0 |
| Year (annual) | 5,808 | 802 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00337935. 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 Springfield been warmer than normal lately?
2021 averaged 52.4°F, 1.2°F above the 1991-2020 normal of 51.2°F.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 52.4°F | +1.2°F | 42.57 |
Over 38 complete years from 1970 to 2021, the station's annual mean temperature rose at a fitted 2.8°F per century (+0.15°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00337935; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Springfield's climate compare?
Springfield is warmer than 42 of the other 98 places with their own NOAA record in Ohio, and wetter than 29. Across the 7,247 U.S. stations with normals, its annual mean of 51.2°F is warmer than 46%.
In the Köppen classification computed from these normals, Springfield 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 Springfield 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.
- Northridge, OH7,546 people · 2 mi NE
- Tremont City, OH346 people · 3 mi NW
- Lawrenceville, OH332 people · 4 mi W
- Clifton, OH136 people · 12 mi S
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 Springfield's climate
What is the coldest month in Springfield?
January, with a normal high of 36°F and a normal low of 19°F. The warmest is July (84°F by day, 62°F at night).
Does it snow in Springfield?
Yes. NOAA publishes no 1991-2020 snowfall normal for Springfield's NOAA station; the nearest record that keeps one, New Carlisle (12 miles away), records 19 inches of snow in a normal year.
What is the rainiest month in Springfield?
May, with 4.59 in of precipitation in a normal year; the driest is February with 2.10 in.
What plant hardiness zone is Springfield in?
The USDA's 2023 map puts Springfield in zone 6a across its 4 ZIP code areas (6a in 45503, the largest). By the same method at Springfield's NOAA station, the coldest night of a typical year reaches −6°F (26 years, 1991-2020): zone 6a.
How late can frost come in Springfield?
In half of years the last 32°F night comes after April 25; 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
- Urbana, OH9 miles from this station, 51.2°F a year
- New Carlisle, OH12 miles from this station, 51.9°F a year
- London, OH17 miles from this station, 50.4°F a year
- Dayton, OH22 miles from this station, 53.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made