September
September · June · August
80climate match
United States · 1991–2020
Best time to visit
Hirsch.
September leads for comfortable weather in Hirsch: typically 25.6°C by day, 7.8°C at night, with 39 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high25.6°C
Typical low7.8°C
Rain in September39 mm
July
July · August · June
70climate match
May
May · September · October
78climate match
The weakest month is January, scoring 5 against September’s 80 — days reach only 4.1°C, 20° below the 24°C the score treats as ideal, and nights drop to -9.2°C.
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
54.1° / -9.2°
Feb
56.4° / -7.6°
Mar
2712.1° / -3.5°
Apr
4416.3° / 1.2°
May
6721.3° / 6°
Jun
7626.5° / 10.8°
Jul
7131.7° / 14°
Aug
7231.2° / 12.7°
Sep
8025.6° / 7.8°
Oct
5117.4° / 1.7°
Nov
189.7° / -4.1°
Dec
54.3° / -8.4°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 4.1°C | -9.2°C | 12 mm | 3.3 | 9 h 02 | 5 | Strong coverage |
| February | 6.4°C | -7.6°C | 14 mm | 3.5 | 10 h 17 | 5 | Strong coverage |
| March | 12.1°C | -3.5°C | 25 mm | 3.9 | 11 h 46 | 27 | Strong coverage |
| April | 16.3°C | 1.2°C | 48 mm | 7 | 13 h 28 | 44 | Strong coverage |
| May | 21.3°C | 6°C | 62 mm | 8.2 | 14 h 54 | 67 | Strong coverage |
| June | 26.5°C | 10.8°C | 62 mm | 8 | 15 h 42 | 76 | Strong coverage |
| July | 31.7°C | 14°C | 34 mm | 4.9 | 15 h 23 | 71 | Strong coverage |
| August | 31.2°C | 12.7°C | 21 mm | 3.6 | 14 h 08 | 72 | Strong coverage |
| September | 25.6°C | 7.8°C | 39 mm | 4.9 | 12 h 29 | 80 | Strong coverage |
| October | 17.4°C | 1.7°C | 41 mm | 5.3 | 10 h 50 | 51 | Strong coverage |
| November | 9.7°C | -4.1°C | 17 mm | 3.5 | 9 h 24 | 18 | Strong coverage |
| December | 4.3°C | -8.4°C | 16 mm | 3.2 | 8 h 41 | 5 | Strong coverage |
What has changed
Hirsch runs -0.7°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
+0.7
Feb
-3.2
Mar
+0.2
Apr
-2.1
May
-2.1
Jun
-0.7
Jul
-0.2
Aug
-0.5
Sep
+1.0
Oct
-2.0
Nov
0.0
Dec
+0.9
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 23.9°C18 Jan 1897 | -39.4°C17 Jan 1930 | 37 mm2 Jan 1972 | 53 mm1972 · driest 1 mm in 2008 | 130 |
| February | 24.4°C27 Feb 1932 | -45.0°C11 Feb 1899 | 19 mm25 Feb 2000 | 52 mm1978 · driest 0 mm in 1899 | 131 |
| March | 27.8°C31 Mar 2004 | -36.7°C6 Mar 1920 | 34 mm30 Mar 2006 | 65 mm2017 · driest 0 mm in 1904 | 130 |
| April | 33.3°C25 Apr 1910 | -20.6°C2 Apr 1936 | 119 mm17 Apr 1941 | 147 mm1940 · driest 0 mm in 1905 | 131 |
| May | 37.2°C16 May 1901 | -10.0°C3 May 1954 | 76 mm13 May 1942 | 226 mm2011 · driest 0 mm in 1903 | 132 |
| June | 42.2°C21 Jun 1900 | -3.3°C1 Jun 1903 | 76 mm9 Jun 1997 | 258 mm1944 · driest 0 mm in 1903 | 132 |
| July | 44.4°C31 Jul 1901 | 2.8°C14 Jul 1913 | 58 mm3 Jul 1993 | 136 mm1993 · driest 0 mm in 2003 | 132 |
| August | 41.7°C3 Aug 1934 | -2.2°C25 Aug 1910 | 62 mm31 Aug 1906 | 98 mm1933 · driest 0 mm in 1904 | 131 |
| September | 38.3°C8 Sep 2022 | -7.8°C24 Sep 1926 | 52 mm7 Sep 1941 | 147 mm1941 · driest 0 mm in 1904 | 128 |
| October | 35.0°C3 Oct 1922 | -23.9°C27 Oct 1919 | 75 mm31 Oct 1974 | 95 mm1912 · driest 0 mm in 1904 | 128 |
| November | 26.7°C12 Nov 1999 | -33.3°C16 Nov 1959 | 25 mm8 Nov 2018 | 62 mm1897 · driest 0 mm in 1914 | 127 |
| December | 23.9°C30 Dec 1896 | -40.6°C24 Dec 1983 | 31 mm4 Dec 1910 | 52 mm2017 · driest 0 mm in 1898 | 131 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | 0 | 3 |
| February | 0 | 0 | 25 | <1 | 3 |
| March | <1 | 0 | 23 | <1 | 2 |
| April | 3 | <1 | 12 | 1 | 1 |
| May | 9 | 2 | 2 | 2 | <1 |
| June | 20 | 8 | 0 | 2 | 0 |
| July | 28 | 21 | 0 | 1 | 0 |
| August | 27 | 21 | 0 | <1 | 0 |
| September | 17 | 8 | <1 | 1 | 0 |
| October | 5 | 1 | 10 | 1 | 1 |
| November | <1 | 0 | 23 | <1 | 2 |
| December | 0 | 0 | 29 | <1 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 12% | <1% | 8% | -2.9–7.7°C |
| February | 1% | 12% | <1% | 8% | -0.8–10.3°C |
| March | 9% | 14% | 1% | 10% | 5.5–14.6°C |
| April | 32% | 19% | 3% | 18% | 13.4–20.7°C |
| May | 54% | 25% | 6% | 29% | 18.8–24.8°C |
| June | 71% | 25% | 6% | 25% | 24.0–30.1°C |
| July | 85% | 14% | 3% | 9% | 29.2–34.0°C |
| August | 86% | 13% | 2% | 8% | 28.4–33.4°C |
| September | 73% | 15% | 3% | 12% | 21.7–28.0°C |
| October | 43% | 15% | 3% | 11% | 14.3–21.4°C |
| November | 5% | 12% | 1% | 8% | 5.4–13.1°C |
| December | <1% | 11% | <1% | 6% | -1.1–7.8°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 5657496
- NOAA station
- USC00240802 · BILLINGS WTP
- Station distance
- 7.3 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 30 usable years
- Daylight
- Calculated from latitude 45.82°, 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.