Circleville, OH Climate: Temperature & Rain by Month
Temperature and precipitation from NOAA NCEI 1991–2020 normals →, plus PlainClimate's derived comfort score
30-year climate normals (1991-2020) from Circleville's primary NOAA station, CIRCLEVILLE.
The climate verdict for Circleville
Circleville, Ohio has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 54°F. Its climate comfort score of 68/100 (good) lands mid-pack nationally, exceeding 56% of station-mapped location scores.
- 54°F
- average temperature, NOAA 1991-2020 normal
- 68/100
- comfort score, above 56% of station-mapped location scores
- 40.9"
- annual precipitation · 15" snow
- 194 days
- frost-free days per growing season
Circleville: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00331592 · Circleville, OH 54°F mean · 40.9" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-MID · SWING-MID · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 54°F
- RANK-MID #3,979
- PHOTO-FINISH ≈ Campo
- PRCP-MID 40.9"
- SWING-MID 45°F
- COMF-MID 68/100
- LOAD-HEAT 5,003 HDD
- STN-1 USC00331592
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Campo, CO (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every OH station list.
- Circleville (this station) 54°F
- Cold Hagerstown, MD 54°F
- Hot Phoenixville, PA 54°F
- Near Campo, CO 54°F
- Near Shelbyville, IN 54°F
Climate Living Index · Circleville
Circleville: 65/100 · grade C
Circleville publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Circleville, not an official NOAA rating. Rankings still use Comfort Score 68/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 40.9 in · 5.9 from 35 in | 79/100 · B |
| Normal heat + freeze calendar | 108 calendar days | 72/100 · B |
| Frost-free season | 194 days/year | 60/100 · C |
| Annual temperature balance | 54.3°F · 13.2° from 67.5°F | 57/100 · C |
| Snowfall burden | 15.4 inches/year | 55/100 · C |
Circleville · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Circleville is a continental Köppen climate: Dfa
Coldest-month mean 30.8°F and warmest-month mean 75.4°F place this station in continental, no dry season, hot summer climates (Dfa). Class Dfa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, no dry season, hot summer.
- Köppen code
- Dfa
- Group
- Continental
- Warmest month
- 75.4°F
- Coldest month
- 30.8°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Circleville sits across the climate record
Three NOAA fields for Circleville's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 58th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- 60th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- 57th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Circleville compares across U.S. station-mapped locations
Circleville's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
68 Top 44% score exceeds 56% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). This entry sits in this band.
- 70–80: 650 station-mapped locations (11%). Above this entry.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Circleville's measured station temperature trend
MethodologyAcross 85 complete annual observations from 1895 to 2025, CIRCLEVILLE warmed at a fitted rate of 0.10°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Circleville primary station fitted change +0.10 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 39°F (4°C) | 23°F (-5°C) | 31°F (-1°C) | 2.9" | 6.7" | 24.7 | 0.0 |
| February | 42°F (6°C) | 25°F (-4°C) | 34°F (1°C) | 2.5" | 4.6" | 21.9 | 0.0 |
| March | 52°F (11°C) | 33°F (0°C) | 42°F (6°C) | 3.3" | 1.5" | 18.1 | 0.0 |
| April | 66°F (19°C) | 42°F (6°C) | 54°F (12°C) | 4.0" | 0.2" | 5.7 | 0.0 |
| May | 75°F (24°C) | 53°F (12°C) | 64°F (18°C) | 4.5" | 0.0" | 0.1 | 0.6 |
| June | 83°F (28°C) | 62°F (17°C) | 73°F (23°C) | 4.7" | 0.0" | 0.0 | 4.0 |
| July | 86°F (30°C) | 65°F (18°C) | 75°F (24°C) | 3.9" | 0.0" | 0.0 | 6.9 |
| August | 85°F (29°C) | 64°F (18°C) | 74°F (23°C) | 3.4" | 0.0" | 0.0 | 4.7 |
| September | 80°F (26°C) | 57°F (14°C) | 68°F (20°C) | 3.0" | 0.0" | 0.0 | 2.5 |
| October | 68°F (20°C) | 45°F (7°C) | 56°F (13°C) | 3.0" | 0.0" | 2.5 | 0.2 |
| November | 54°F (12°C) | 35°F (2°C) | 45°F (7°C) | 2.8" | 0.4" | 14.9 | 0.0 |
| December | 43°F (6°C) | 28°F (-2°C) | 36°F (2°C) | 3.1" | 2.0" | 22.4 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 86°F around July 7, short of 90°F on every date, while 108 dates carry a normal low at or below freezing, the coldest 22°F near January 23.
The freezing stretch
The normal low stays at or below 32°F into March 14, then returns to freezing around November 28, covering 108 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
Where the wet dates fall
The likeliest wet date is May 11, when 42% of years recorded at least a hundredth of an inch. The driest is September 8 at 27%. Summed across the calendar, that is about 129 wet dates a year.
The widest day
April 17 carries the biggest normal gap between afternoon and dawn, 24°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Circleville.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 6.7"
12.2 days with precipitation
Snow: 4.6"
10.3 days with precipitation
Snow: 1.5"
11.2 days with precipitation
Snow: 0.2"
12.2 days with precipitation
12.8 days with precipitation
11.4 days with precipitation
9.9 days with precipitation
9.3 days with precipitation
8.4 days with precipitation
9.4 days with precipitation
Snow: 0.4"
10.0 days with precipitation
Snow: 2.0"
11.2 days with precipitation
Circleville spreads its precipitation across the year
Neither half of the year dominates here: June through August take 29% of the annual total and December through February 21%, with neither reaching the 35% that would mark a distinct wet season. Circleville has no dry season to plan around, though it does carry a 44.6°F seasonal spread.
The gap between the wettest and driest month still matters: June averages 4.7" and February 2.5". The three wettest months together take 32% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
How Circleville's precipitation splits across the calendar
About 128 days a year record measurable precipitation here, carrying 40.9" between them, or roughly 0.32 inches on a typical wet day. That sits in the middle band: neither the many-light-days pattern of the Pacific Northwest and the Great Lakes, nor the few-heavy-events pattern of the Gulf and the desert Southwest.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year and say nothing about the heaviest single storm on record.
Winter brings real snow to Circleville
Circleville averages 15.4 inches of snowfall a year, with January the snowiest month on the normals, spread across roughly 13 days that record measurable snow. That is depth accumulating on the ground, which is why it can exceed the annual precipitation figure: precipitation counts the liquid the snow melts down to, and fresh snow is mostly air.
- Annual snowfall: 15.4 inches of depth.
- Days recording measurable snow: about 13 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 4% of the year's precipitation.
NOAA 1991-2020 normals. The ten-to-one ratio is a convention, not a measurement: real ratios vary with temperature, so treat the share as an order of magnitude rather than an exact split.
Frost Dates & Growing Season
First Fall Freeze
October 28
50% probability date
Last Spring Freeze
April 17
50% probability date
Growing Season
194 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,003
Higher = more heating needed
Cooling Degree Days
1,129
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside OH closest to Circleville on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (54°F here).
- Battle Mountain, NV 54°F · 0.0°F off
- Bedford, IN 54°F · 0.0°F off
- Beloit, KS 54°F · 0.0°F off
- Caesars Head, SC 54°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (40.9" here), excluding temperature-peer places.
- Sussex, NJ 41.0" · 0.0" off
- Plainfield, VT 41.0" · 0.0" off
- Tulsa, OK 41.0" · 0.0" off
- Rushville, IL 40.9" · 0.0" off
Snow and freeze rhythm
When cold and snow define Circleville
heating led · moderate · mid swing
Circleville's energy balance leans toward cold weather: 5,003 annual heating degree days against 1,129 for cooling. Its 44.6°F seasonal range still makes the monthly rows more useful than the annual average alone.
Circleville's frost-free season lasts about 194 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
-
1. Circleville coldest normal
January
The monthly mean of 31°F (-1°C) sits near freezing, so cold nights and above-freezing afternoons share the same month.
-
2. Circleville typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Circleville snow peak
January
Circleville averages 15.4 inches of snow a year, with January the snowiest month on the normals.
Questions about Circleville's climate
How much snow does Circleville get? ▼
How cold does Circleville get in winter? ▼
How much energy does heating and cooling require in Circleville? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Circleville's primary station: CIRCLEVILLE (USC00331592). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 3915070). Match rule for Circleville: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Circleville comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.