September
September · August · June
84climate match
United States · 1991–2020
Best time to visit
Coppess Corner.
September leads for comfortable weather in Coppess Corner: typically 24.9°C by day, 12.7°C at night, with 77 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high24.9°C
Typical low12.7°C
Rain in September77 mm
July
July · August · June
72climate match
October
October · May · September
75climate match
The weakest month is January, scoring 5 against September’s 84 — days reach only 0.8°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
50.8° / -7.3°
Feb
52.8° / -6.1°
Mar
108.9° / -1.5°
Apr
3916.2° / 4.3°
May
6822.1° / 10.6°
Jun
7027.3° / 16.2°
Jul
6229° / 18°
Aug
7128° / 16.8°
Sep
8424.9° / 12.7°
Oct
5517.9° / 6.6°
Nov
179.9° / 0.5°
Dec
53.4° / -4.2°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 0.8°C | -7.3°C | 73 mm | 8.8 | 9 h 33 | 5 | Strong coverage |
| February | 2.8°C | -6.1°C | 64 mm | 7.6 | 10 h 35 | 5 | Strong coverage |
| March | 8.9°C | -1.5°C | 76 mm | 8.6 | 11 h 49 | 10 | Strong coverage |
| April | 16.2°C | 4.3°C | 104 mm | 10.2 | 13 h 14 | 39 | Strong coverage |
| May | 22.1°C | 10.6°C | 115 mm | 10.5 | 14 h 26 | 68 | Strong coverage |
| June | 27.3°C | 16.2°C | 114 mm | 10.1 | 15 h 05 | 70 | Strong coverage |
| July | 29°C | 18°C | 118 mm | 8.1 | 14 h 49 | 62 | Strong coverage |
| August | 28°C | 16.8°C | 97 mm | 7 | 13 h 47 | 71 | Strong coverage |
| September | 24.9°C | 12.7°C | 77 mm | 6.3 | 12 h 25 | 84 | Strong coverage |
| October | 17.9°C | 6.6°C | 76 mm | 7.7 | 11 h 03 | 55 | Strong coverage |
| November | 9.9°C | 0.5°C | 78 mm | 8 | 9 h 51 | 17 | Strong coverage |
| December | 3.4°C | -4.2°C | 67 mm | 8.2 | 9 h 16 | 5 | Strong coverage |
What has changed
Coppess Corner runs +0.0°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
+0.3
Mar
+0.3
Apr
-0.5
May
-0.3
Jun
-0.2
Jul
-0.6
Aug
-0.9
Sep
+0.1
Oct
+0.3
Nov
-0.2
Dec
+1.7
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 21.1°C25 Jan 1950 | -31.1°C20 Jan 1985 | 64 mm13 Jan 2013 | 261 mm1950 · driest 9 mm in 1961 | 116 |
| February | 23.3°C25 Feb 2000 | -28.9°C12 Feb 2014 | 80 mm5 Feb 1924 | 154 mm1990 · driest 5 mm in 1920 | 116 |
| March | 30.0°C22 Mar 2012 | -21.1°C3 Mar 1943 | 65 mm25 Mar 1913 | 247 mm1913 · driest 1 mm in 1910 | 115 |
| April | 32.2°C24 Apr 1925 | -12.2°C7 Apr 1982 | 72 mm27 Apr 1959 | 226 mm1964 · driest 23 mm in 2012 | 116 |
| May | 37.2°C27 May 1911 | -3.9°C1 May 1943 | 115 mm26 May 2017 | 373 mm2017 · driest 12 mm in 1934 | 115 |
| June | 40.0°C29 Jun 2012 | 2.2°C23 Jun 1918 | 107 mm24 Jun 1981 | 315 mm2015 · driest 17 mm in 2002 | 114 |
| July | 41.7°C22 Jul 1934 | 5.6°C15 Jul 1930 | 89 mm31 Jul 1942 | 265 mm2003 · driest 6 mm in 1974 | 114 |
| August | 40.6°C5 Aug 1918 | 2.8°C29 Aug 1965 | 92 mm4 Aug 1998 | 244 mm1990 · driest 19 mm in 1938 | 114 |
| September | 38.3°C15 Sep 1939 | -2.8°C28 Sep 1942 | 124 mm20 Sep 1957 | 270 mm1926 · driest 4 mm in 1956 | 113 |
| October | 32.2°C4 Oct 1951 | -8.9°C29 Oct 1925 | 69 mm9 Oct 1950 | 227 mm1919 · driest 7 mm in 2024 | 114 |
| November | 26.7°C2 Nov 2016 | -19.4°C30 Nov 1929 | 69 mm17 Nov 1958 | 165 mm1985 · driest 7 mm in 1976 | 114 |
| December | 22.2°C6 Dec 1998 | -28.3°C22 Dec 1989 | 60 mm27 Dec 2015 | 174 mm1924 · driest 8 mm in 1958 | 114 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | 2 | 5 |
| February | 0 | 0 | 24 | 2 | 4 |
| March | <1 | 0 | 20 | 3 | 2 |
| April | 3 | 0 | 6 | 4 | <1 |
| May | 11 | 3 | <1 | 4 | 0 |
| June | 22 | 9 | 0 | 4 | 0 |
| July | 28 | 13 | 0 | 4 | 0 |
| August | 26 | 9 | 0 | 3 | 0 |
| September | 16 | 5 | <1 | 3 | 0 |
| October | 5 | <1 | 3 | 3 | <1 |
| November | <1 | 0 | 15 | 3 | 1 |
| December | 0 | 0 | 25 | 2 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 27% | 6% | 30% | -2.9–4.6°C |
| February | <1% | 25% | 6% | 28% | -0.8–6.6°C |
| March | 6% | 30% | 9% | 38% | 5.2–12.9°C |
| April | 20% | 34% | 11% | 46% | 13.5–18.8°C |
| May | 48% | 32% | 11% | 41% | 19.7–25.2°C |
| June | 67% | 30% | 12% | 35% | 25.4–29.6°C |
| July | 74% | 26% | 11% | 25% | 27.8–31.9°C |
| August | 76% | 24% | 9% | 22% | 26.7–30.3°C |
| September | 67% | 24% | 9% | 24% | 23.2–27.3°C |
| October | 34% | 24% | 8% | 26% | 16.0–20.9°C |
| November | 5% | 27% | 8% | 30% | 6.7–12.7°C |
| December | <1% | 27% | 7% | 29% | -0.5–6.8°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 4919299
- NOAA station
- USC00120676 · BERNE WWTP
- Station distance
- 8.8 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 27 usable years
- Daylight
- Calculated from latitude 40.75°, 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.