Piqua, Ohio climate: Normal weather by month, frost dates and records
Piqua's normal year runs from 21°F January nights to 84°F July afternoons, with 40.7 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 11.5°C, January lows of −6°C, July highs of 29°C, 1,035 mm of precipitation a year.
- NOAA stationPiqua Wastewater Treatment Plant
- Station IDUSC00336650
- Location40.13°N 84.23°W
- Elevation853 ft (260 m)
- From the center1 miles
- Population20,940
On October 14, the normal high in Piqua 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 Piqua.
- Jan 36° 21°
- Feb 41° 23°
- Mar 51° 32°
- Apr 64° 41°
- May 74° 52°
- Jun 81° 61°
- Jul 84° 65°
- Aug 83° 62°
- Sep 78° 55°
- Oct 66° 44°
- Nov 52° 34°
- Dec 40° 25°
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 Piqua each month?
July is the warmest month, with normal highs of 84°F; January the coldest, with normal lows of 21°F. The most precipitation falls in May (4.38 in), the least in February (2.32 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 36°F | 21°F | 28.3°F | 2.97 | 12 | <1 | 25 | 9 h 40 min |
| February | 41°F | 23°F | 32.0°F | 2.32 | 10 | <1 | 24 | 10 h 40 min |
| March | 51°F | 32°F | 41.1°F | 3.18 | 11 | <1 | 18 | 11 h 50 min |
| April | 64°F | 41°F | 52.6°F | 3.88 | 11 | <1 | 5 | 13 h 10 min |
| May | 74°F | 52°F | 63.3°F | 4.38 | 13 | 1 | <1 | 14 h 20 min |
| June | 81°F | 61°F | 71.1°F | 4.18 | 13 | 4 | <1 | 15 h |
| July | 84°F | 65°F | 74.4°F | 4.19 | 10 | 6 | <1 | 14 h 50 min |
| August | 83°F | 62°F | 72.5°F | 3.58 | 8 | 4 | <1 | 13 h 50 min |
| September | 78°F | 55°F | 66.5°F | 2.98 | 8 | 2 | <1 | 12 h 30 min |
| October | 66°F | 44°F | 54.5°F | 2.86 | 10 | <1 | 2 | 11 h 10 min |
| November | 52°F | 34°F | 43.1°F | 3.23 | 10 | <1 | 15 | 10 h |
| December | 40°F | 25°F | 32.7°F | 2.99 | 12 | <1 | 23 | 9 h 20 min |
| Year (annual) | 63°F | 43°F | 52.7°F | 40.74 | 127 | 17 | 111 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 2°C | −6°C | −2.1°C | 75 mm |
| February | 5°C | −5°C | 0.0°C | 59 mm |
| March | 10°C | 0°C | 5.1°C | 81 mm |
| April | 18°C | 5°C | 11.4°C | 99 mm |
| May | 23°C | 11°C | 17.4°C | 111 mm |
| June | 27°C | 16°C | 21.7°C | 106 mm |
| July | 29°C | 18°C | 23.6°C | 106 mm |
| August | 28°C | 17°C | 22.5°C | 91 mm |
| September | 26°C | 13°C | 19.2°C | 76 mm |
| October | 19°C | 6°C | 12.5°C | 73 mm |
| November | 11°C | 1°C | 6.2°C | 82 mm |
| December | 5°C | −4°C | 0.4°C | 76 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Dayton (16 miles away), gets 25 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00336650; 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 Piqua?
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 (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 USC00336650.
When is the last frost in Piqua?
In Piqua, the last spring frost (32°F) comes after April 18 in half of years and after May 5 in one year in ten; the first autumn frost comes before October 23 in half of years and before October 9 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 181 year in 10 after May 5; 9 in 10 after April 5
- First autumn frost, half of years before
- October 231 year in 10 before October 9; 9 in 10 before November 4
NOAA puts the median frost-free season at 186 days, and the season without a hard freeze (28°F) at 209 days.
A hard freeze (28°F) comes after April 5 in half of springs and before November 3 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Piqua in zone 6a in ZIP code 45356.
Frost dates for every NOAA station in Ohio · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00336650; 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 Piqua?
In a normal year in Piqua, 17 days a year reach 90°F, 111 nights fall to 32°F or colder and 127 days bring measurable precipitation.
- Days at 90°F or more
- 17a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 111a normal year
- Days that stay below freezing
- 31high of 32°F or less
- Days with 0.01 inch of precipitation
- 127a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00336650.
How sunny is Piqua?
Over a year 72% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Piqua, 3.9 kWh per square metre a day. August is the sunniest month (81%) and December the cloudiest (57%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 58% | 1.7 |
| February | 63% | 2.6 |
| March | 65% | 3.6 |
| 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 | 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 Piqua need?
A normal year in Piqua brings 5,406 heating degree days, 1% more than the median U.S. place (5,373), and 953 cooling degree days, 5% 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 3,450 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,138 | 0 |
| February | 923 | 0 |
| March | 741 | 2 |
| April | 381 | 9 |
| May | 130 | 77 |
| June | 14 | 198 |
| July | 3 | 294 |
| August | 5 | 238 |
| September | 71 | 117 |
| October | 343 | 17 |
| November | 658 | 1 |
| December | 1,000 | 0 |
| Year (annual) | 5,406 | 953 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00336650. 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 Piqua been warmer than normal lately?
2025 averaged 52.5°F, 0.2°F below the 1991-2020 normal of 52.7°F. 3 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 53.6°F | +0.9°F | – |
| 2022 | 52.1°F | −0.6°F | 40.29 |
| 2023 | 54.5°F | +1.8°F | 33.46 |
| 2024 | 55.6°F | +2.9°F | 40.92 |
| 2025 | 52.5°F | −0.2°F | 40.87 |
Source: observed years: ACIS, station USC00336650. A year counts only with all twelve months complete.
How does Piqua's climate compare?
Piqua is warmer than 72 of the other 98 places with their own NOAA record in Ohio, and wetter than 37. Across the 7,247 U.S. stations with normals, its annual mean of 52.7°F is warmer than 52%.
In the Köppen classification computed from these normals, Piqua 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 Piqua share this climate record?
8 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.
- Troy, OH27,122 people · 6 mi S
- Covington, OH2,622 people · 6 mi W
- Bradford, OH1,804 people · 10 mi W
- Pleasant Hill, OH1,266 people · 8 mi SW
- Russia, OH743 people · 12 mi NW
- Fletcher, OH462 people · 7 mi E
- Casstown, OH276 people · 8 mi SE
- Lockington, OH157 people · 5 mi N
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 Piqua's climate
What is the coldest month in Piqua?
January, with a normal high of 36°F and a normal low of 21°F. The warmest is July (84°F by day, 65°F at night).
Does it snow in Piqua?
Yes. NOAA publishes no 1991-2020 snowfall normal for Piqua's NOAA station; the nearest record that keeps one, Dayton (16 miles away), records 25 inches of snow in a normal year.
What is the rainiest month in Piqua?
May, with 4.38 in of precipitation in a normal year; the driest is February with 2.32 in.
What plant hardiness zone is Piqua in?
The USDA's 2023 map puts Piqua in zone 6a in ZIP code 45356.
How late can frost come in Piqua?
In half of years the last 32°F night comes after April 18; 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
- Sidney, OH11 miles from this station, 50.9°F a year
- Dayton, OH16 miles from this station, 53.9°F a year
- New Carlisle, OH17 miles from this station, 51.9°F a year
- Greenville, OH22 miles from this station, 51.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made