September
September · June · August
83climate match
United States · 1991–2020
Best time to visit
Wapakoneta.
September leads for comfortable weather in Wapakoneta: typically 24.8°C by day, 12.9°C at night, with 81 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high24.8°C
Typical low12.9°C
Rain in September81 mm
July
July · August · June
70climate match
October
October · May · September
75climate match
The weakest month is January, scoring 5 against September’s 83 — days reach only 1°C, 23° below the 24°C the score treats as ideal.
Month by month
The whole year,
without the guesswork.
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
Jan
51° / -7.1°
Feb
52.8° / -6.1°
Mar
98.7° / -1.6°
Apr
3916.1° / 4.1°
May
6722° / 10.3°
Jun
7326.9° / 15.7°
Jul
6428.7° / 17.6°
Aug
7127.8° / 16.8°
Sep
8324.8° / 12.9°
Oct
5517.9° / 6.9°
Nov
1810° / 0.8°
Dec
53.7° / -3.9°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 1°C | -7.1°C | 73 mm | 9.2 | 9 h 34 | 5 | Strong coverage |
| February | 2.8°C | -6.1°C | 64 mm | 7.6 | 10 h 35 | 5 | Strong coverage |
| March | 8.7°C | -1.6°C | 77 mm | 8.9 | 11 h 49 | 9 | Strong coverage |
| April | 16.1°C | 4.1°C | 101 mm | 10.2 | 13 h 14 | 39 | Strong coverage |
| May | 22°C | 10.3°C | 111 mm | 10.8 | 14 h 25 | 67 | Strong coverage |
| June | 26.9°C | 15.7°C | 108 mm | 9.9 | 15 h 03 | 73 | Strong coverage |
| July | 28.7°C | 17.6°C | 114 mm | 8.5 | 14 h 48 | 64 | Strong coverage |
| August | 27.8°C | 16.8°C | 96 mm | 7.6 | 13 h 47 | 71 | Strong coverage |
| September | 24.8°C | 12.9°C | 81 mm | 7.1 | 12 h 25 | 83 | Strong coverage |
| October | 17.9°C | 6.9°C | 75 mm | 8.2 | 11 h 03 | 55 | Strong coverage |
| November | 10°C | 0.8°C | 79 mm | 7.7 | 9 h 52 | 18 | Strong coverage |
| December | 3.7°C | -3.9°C | 69 mm | 8.3 | 9 h 17 | 5 | Strong coverage |
What has changed
Wapakoneta runs +0.3°C
on the 1961–1990 baseline.
Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.
Jan
+0.4
Feb
+0.8
Mar
+0.4
Apr
-0.4
May
-0.2
Jun
0.0
Jul
-0.3
Aug
-0.3
Sep
+0.7
Oct
+0.5
Nov
-0.3
Dec
+1.9
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 25.0°C21 Jan 1906 | -29.4°C19 Jan 1994 | 63 mm14 Jan 1937 | 212 mm1950 · driest 7 mm in 1961 | 125 |
| February | 22.2°C25 Feb 2000 | -26.7°C26 Feb 1963 | 59 mm10 Feb 1959 | 165 mm1909 · driest 1 mm in 1987 | 124 |
| March | 30.0°C22 Mar 2012 | -22.2°C12 Mar 1948 | 85 mm25 Mar 1913 | 254 mm1913 · driest 3 mm in 1910 | 125 |
| April | 31.7°C20 Apr 1985 | -13.3°C7 Apr 1982 | 86 mm1 Apr 1904 | 238 mm1957 · driest 14 mm in 1962 | 126 |
| May | 35.0°C27 May 1911 | -4.4°C10 May 1966 | 70 mm31 May 2015 | 234 mm2017 · driest 13 mm in 2007 | 126 |
| June | 39.4°C29 Jun 2012 | 1.1°C1 Jun 1966 | 125 mm16 Jun 2015 | 423 mm2015 · driest 9 mm in 1913 | 125 |
| July | 42.8°C14 Jul 1936 | 6.1°C10 Jul 1963 | 102 mm16 Jul 1915 | 285 mm1915 · driest 11 mm in 1921 | 125 |
| August | 39.4°C9 Aug 1934 | 2.2°C29 Aug 1965 | 129 mm21 Aug 2007 | 282 mm2007 · driest 7 mm in 2025 | 124 |
| September | 38.3°C15 Sep 1939 | -2.8°C26 Sep 1940 | 112 mm22 Sep 2021 | 249 mm1926 · driest 7 mm in 1956 | 124 |
| October | 34.4°C3 Oct 1971 | -8.3°C29 Oct 1925 | 77 mm5 Oct 1995 | 196 mm1919 · driest 1 mm in 1963 | 123 |
| November | 26.7°C1 Nov 1950 | -19.4°C30 Nov 1958 | 67 mm19 Nov 2017 | 181 mm2017 · driest 3 mm in 1904 | 125 |
| December | 21.1°C6 Dec 1998 | -27.2°C25 Dec 1983 | 75 mm1 Dec 2006 | 175 mm1990 · driest 9 mm in 1913 | 125 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | 2 | 3 |
| February | 0 | 0 | 24 | 2 | 3 |
| March | <1 | 0 | 20 | 3 | <1 |
| April | 3 | 0 | 7 | 3 | <1 |
| May | 10 | 2 | <1 | 4 | 0 |
| June | 22 | 8 | 0 | 3 | 0 |
| July | 28 | 12 | 0 | 3 | 0 |
| August | 26 | 9 | 0 | 3 | 0 |
| September | 16 | 4 | 0 | 3 | 0 |
| October | 5 | <1 | 3 | 2 | 0 |
| November | <1 | 0 | 15 | 3 | <1 |
| December | 0 | 0 | 24 | 2 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 27% | 7% | 30% | -2.3–5.0°C |
| February | <1% | 24% | 6% | 24% | -0.7–6.6°C |
| March | 6% | 29% | 9% | 37% | 5.4–13.0°C |
| April | 22% | 33% | 11% | 42% | 13.4–18.8°C |
| May | 49% | 32% | 10% | 42% | 19.4–25.1°C |
| June | 68% | 30% | 12% | 34% | 25.1–29.2°C |
| July | 74% | 26% | 11% | 25% | 27.5–31.5°C |
| August | 76% | 23% | 9% | 23% | 26.6–29.9°C |
| September | 67% | 24% | 9% | 23% | 22.8–27.1°C |
| October | 34% | 24% | 7% | 25% | 15.7–20.8°C |
| November | 5% | 27% | 8% | 29% | 7.2–13.1°C |
| December | <1% | 28% | 7% | 31% | -0.2–6.7°C |
A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.
The evidence behind this page
Nearby, measured,
and named.
- Place identity
- GeoNames 5175670
- NOAA station
- USC00334551 · LIMA WWTP
- Station distance
- 18.3 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 29 usable years
- Daylight
- Calculated from latitude 40.57°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.