September
September · August · June
79climate match
United States · 1991–2020
Best time to visit
Audubon.
September leads for comfortable weather in Audubon: typically 24.1°C by day, 9.8°C at night, with 91 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high24.1°C
Typical low9.8°C
Rain in September91 mm
July
July · August · June
69climate match
September
September · October · May
73climate match
The weakest month is January, scoring 5 against September’s 79 — days reach only -1.8°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
5-1.8° / -12.4°
Feb
50.7° / -10.3°
Mar
118.5° / -4°
Apr
3715.9° / 1.8°
May
5921.6° / 8.7°
Jun
7126.8° / 14.6°
Jul
6928.4° / 16.5°
Aug
7427.3° / 14.9°
Sep
7924.1° / 9.8°
Oct
4717° / 3°
Nov
138.3° / -3.8°
Dec
50.9° / -9.4°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | -1.8°C | -12.4°C | 20 mm | 3.7 | 9 h 27 | 5 | Strong coverage |
| February | 0.7°C | -10.3°C | 24 mm | 4.2 | 10 h 32 | 5 | Strong coverage |
| March | 8.5°C | -4°C | 43 mm | 5.6 | 11 h 48 | 11 | Strong coverage |
| April | 15.9°C | 1.8°C | 90 mm | 8.5 | 13 h 16 | 37 | Strong coverage |
| May | 21.6°C | 8.7°C | 138 mm | 10.7 | 14 h 31 | 59 | Strong coverage |
| June | 26.8°C | 14.6°C | 131 mm | 8.9 | 15 h 11 | 71 | Strong coverage |
| July | 28.4°C | 16.5°C | 99 mm | 7.9 | 14 h 55 | 69 | Strong coverage |
| August | 27.3°C | 14.9°C | 113 mm | 7.9 | 13 h 51 | 74 | Strong coverage |
| September | 24.1°C | 9.8°C | 91 mm | 6.6 | 12 h 25 | 79 | Strong coverage |
| October | 17°C | 3°C | 72 mm | 6.5 | 11 h 00 | 47 | Strong coverage |
| November | 8.3°C | -3.8°C | 37 mm | 4.2 | 9 h 46 | 13 | Strong coverage |
| December | 0.9°C | -9.4°C | 28 mm | 3.8 | 9 h 10 | 5 | Strong coverage |
What has changed
Audubon runs -0.9°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
-0.3
Feb
-1.5
Mar
+0.2
Apr
-2.1
May
-2.4
Jun
-1.0
Jul
-2.2
Aug
-2.0
Sep
+0.3
Oct
-1.0
Nov
0.0
Dec
+1.4
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 19.4°C24 Jan 1981 | -36.7°C12 Jan 1912 | 51 mm15 Jan 2003 | 84 mm1949 · driest 0 mm in 2007 | 128 |
| February | 23.9°C27 Feb 2024 | -37.2°C2 Feb 1905 | 43 mm25 Feb 2001 | 90 mm1971 · driest 0 mm in 2007 | 129 |
| March | 32.2°C29 Mar 1986 | -30.6°C1 Mar 1962 | 71 mm31 Mar 1897 | 141 mm1990 · driest 0 mm in 1910 | 129 |
| April | 33.9°C26 Apr 1981 | -15.6°C3 Apr 1936 | 86 mm2 Apr 1964 | 252 mm1984 · driest 4 mm in 1934 | 130 |
| May | 40.0°C30 May 1934 | -6.7°C5 May 1925 | 152 mm7 May 2007 | 337 mm2007 · driest 11 mm in 1952 | 133 |
| June | 40.6°C10 Jun 1933 | 1.7°C9 Jun 1915 | 114 mm18 Jun 1935 | 350 mm2010 · driest 5 mm in 1933 | 133 |
| July | 45.0°C25 Jul 1936 | 4.4°C1 Jul 1918 | 318 mm2 Jul 1958 | 503 mm1958 · driest 0 mm in 2012 | 128 |
| August | 43.3°C8 Aug 1934 | 1.7°C27 Aug 1906 | 159 mm23 Aug 1895 | 311 mm1946 · driest 7 mm in 1976 | 128 |
| September | 38.3°C3 Sep 2000 | -5.6°C29 Sep 1908 | 142 mm11 Sep 1972 | 294 mm1965 · driest 5 mm in 1937 | 128 |
| October | 33.9°C6 Oct 2024 | -17.8°C28 Oct 1925 | 87 mm11 Oct 1986 | 195 mm2007 · driest 0 mm in 1952 | 131 |
| November | 25.6°C14 Nov 1999 | -25.6°C12 Nov 2019 | 96 mm13 Nov 1909 | 218 mm1909 · driest 0 mm in 2002 | 132 |
| December | 20.6°C16 Dec 2021 | -33.9°C23 Dec 1989 | 49 mm14 Dec 2015 | 139 mm2015 · driest 0 mm in 2002 | 131 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | <1 | 3 |
| February | 0 | 0 | 27 | <1 | 3 |
| March | <1 | 0 | 24 | 1 | 2 |
| April | 3 | <1 | 12 | 3 | <1 |
| May | 10 | 2 | 1 | 4 | 0 |
| June | 21 | 8 | 0 | 4 | 0 |
| July | 27 | 11 | 0 | 3 | 0 |
| August | 24 | 7 | 0 | 4 | 0 |
| September | 14 | 4 | 1 | 3 | 0 |
| October | 4 | <1 | 11 | 3 | <1 |
| November | <1 | 0 | 23 | 1 | 1 |
| December | 0 | 0 | 29 | <1 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 13% | 2% | 7% | -6.0–2.7°C |
| February | <1% | 15% | 3% | 10% | -4.0–5.3°C |
| March | 8% | 19% | 5% | 16% | 3.5–12.5°C |
| April | 26% | 26% | 9% | 31% | 13.3–19.3°C |
| May | 51% | 30% | 11% | 35% | 20.0–25.6°C |
| June | 69% | 29% | 13% | 31% | 25.1–29.9°C |
| July | 77% | 23% | 10% | 22% | 27.4–32.6°C |
| August | 76% | 24% | 11% | 24% | 26.4–31.4°C |
| September | 66% | 22% | 9% | 22% | 22.0–26.9°C |
| October | 37% | 18% | 7% | 16% | 15.3–20.8°C |
| November | 5% | 14% | 4% | 10% | 5.1–11.7°C |
| December | 0% | 14% | 3% | 9% | -2.9–4.3°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 4847421
- NOAA station
- USC00130385 · AUDUBON
- Station distance
- 1.5 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 28 usable years
- Daylight
- Calculated from latitude 41.72°, 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.