September
September · August · June
79climate match
United States · 1991–2020
Best time to visit
Prairie du Chien.
September leads for comfortable weather in Prairie du Chien: typically 23.7°C by day, 11°C at night, with 101 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high23.7°C
Typical low11°C
Rain in September101 mm
July
July · August · June
70climate match
May
May · September · October
70climate match
The weakest month is January, scoring 5 against September’s 79 — days reach only -2.4°C, 26° 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
5-2.4° / -12.3°
Feb
50.3° / -10.2°
Mar
67.4° / -4°
Apr
3315° / 2.4°
May
6221.5° / 8.8°
Jun
6926.6° / 14.6°
Jul
6728.6° / 17°
Aug
7327.5° / 15.9°
Sep
7923.7° / 11°
Oct
4916.6° / 4.4°
Nov
117.9° / -2.1°
Dec
50.6° / -8.3°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | -2.4°C | -12.3°C | 31 mm | 5.7 | 9 h 20 | 5 | Strong coverage |
| February | 0.3°C | -10.2°C | 32 mm | 5.5 | 10 h 27 | 5 | Strong coverage |
| March | 7.4°C | -4°C | 52 mm | 6.1 | 11 h 47 | 6 | Strong coverage |
| April | 15°C | 2.4°C | 102 mm | 9 | 13 h 20 | 33 | Strong coverage |
| May | 21.5°C | 8.8°C | 120 mm | 10.4 | 14 h 38 | 62 | Strong coverage |
| June | 26.6°C | 14.6°C | 148 mm | 9.7 | 15 h 21 | 69 | Strong coverage |
| July | 28.6°C | 17°C | 105 mm | 7.9 | 15 h 04 | 67 | Strong coverage |
| August | 27.5°C | 15.9°C | 105 mm | 7.5 | 13 h 56 | 73 | Strong coverage |
| September | 23.7°C | 11°C | 101 mm | 7.3 | 12 h 26 | 79 | Strong coverage |
| October | 16.6°C | 4.4°C | 69 mm | 6.3 | 10 h 57 | 49 | Strong coverage |
| November | 7.9°C | -2.1°C | 54 mm | 5.5 | 9 h 39 | 11 | Strong coverage |
| December | 0.6°C | -8.3°C | 40 mm | 6.1 | 9 h 01 | 5 | Strong coverage |
What has changed
Prairie du Chien runs -0.4°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
+0.5
Feb
-0.9
Mar
+0.4
Apr
-2.1
May
-1.3
Jun
-0.6
Jul
-1.3
Aug
-1.1
Sep
+0.3
Oct
-0.6
Nov
+0.2
Dec
+1.8
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 18.9°C1 Jan 1897 | -38.3°C30 Jan 1951 | 51 mm9 Jan 2026 | 75 mm1996 · driest 1 mm in 2025 | 134 |
| February | 22.8°C27 Feb 2024 | -37.8°C3 Feb 1996 | 42 mm5 Feb 1986 | 95 mm1915 · driest 1 mm in 1958 | 134 |
| March | 31.7°C29 Mar 1895 | -36.1°C1 Mar 1962 | 71 mm31 Mar 1998 | 142 mm1951 · driest 0 mm in 1994 | 134 |
| April | 35.6°C22 Apr 1980 | -17.8°C8 Apr 1972 | 94 mm27 Apr 2009 | 221 mm2008 · driest 14 mm in 1895 | 133 |
| May | 42.8°C31 May 1934 | -6.1°C5 May 1944 | 78 mm24 May 1896 | 301 mm1902 · driest 16 mm in 1958 | 133 |
| June | 40.6°C30 Jun 1931 | 1.1°C6 Jun 1894 | 115 mm15 Jun 1991 | 354 mm2013 · driest 13 mm in 1912 | 134 |
| July | 43.3°C22 Jul 1901 | 3.3°C9 Jul 1895 | 166 mm18 Jul 2007 | 278 mm1940 · driest 1 mm in 1894 | 134 |
| August | 41.1°C8 Aug 1894 | 1.7°C31 Aug 1915 | 120 mm23 Aug 1928 | 350 mm2007 · driest 9 mm in 1941 | 132 |
| September | 40.0°C7 Sep 1939 | -6.7°C28 Sep 1893 | 108 mm18 Sep 1907 | 327 mm2018 · driest 3 mm in 2004 | 133 |
| October | 33.9°C6 Oct 1963 | -15.6°C30 Oct 1925 | 88 mm23 Oct 2020 | 159 mm2018 · driest 0 mm in 1975 | 133 |
| November | 29.4°C9 Nov 1999 | -27.2°C26 Nov 1977 | 80 mm10 Nov 1919 | 153 mm1934 · driest 0 mm in 1914 | 133 |
| December | 21.1°C16 Dec 2021 | -32.2°C27 Dec 1950 | 60 mm14 Dec 2015 | 137 mm2015 · driest 5 mm in 1998 | 132 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | <1 | 6 |
| February | 0 | 0 | 26 | <1 | 5 |
| March | <1 | 0 | 23 | 2 | 2 |
| April | 2 | <1 | 10 | 4 | <1 |
| May | 9 | 2 | <1 | 4 | 0 |
| June | 21 | 7 | 0 | 5 | 0 |
| July | 28 | 11 | 0 | 3 | 0 |
| August | 25 | 8 | 0 | 3 | 0 |
| September | 13 | 3 | <1 | 3 | 0 |
| October | 3 | <1 | 7 | 2 | <1 |
| November | <1 | 0 | 20 | 2 | 1 |
| December | 0 | 0 | 28 | 1 | 5 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 17% | 2% | 12% | -6.3–2.1°C |
| February | <1% | 17% | 3% | 12% | -3.3–4.3°C |
| March | 5% | 21% | 6% | 20% | 3.6–11.3°C |
| April | 23% | 28% | 9% | 32% | 12.7–19.1°C |
| May | 50% | 32% | 11% | 38% | 19.7–25.1°C |
| June | 67% | 31% | 13% | 37% | 24.9–29.6°C |
| July | 74% | 26% | 10% | 27% | 27.6–32.3°C |
| August | 75% | 24% | 11% | 23% | 26.8–31.2°C |
| September | 62% | 25% | 10% | 26% | 21.9–26.7°C |
| October | 33% | 20% | 7% | 19% | 15.0–21.1°C |
| November | 4% | 19% | 5% | 16% | 4.6–11.3°C |
| December | 0% | 17% | 3% | 13% | -3.0–4.1°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 5268002
- NOAA station
- USC00476827 · PRAIRIE DU CHIEN
- Station distance
- 0.5 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 30 usable years
- Daylight
- Calculated from latitude 43.05°, 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.