September
September · August · May
83climate match
United States · 1991–2020
Best time to visit
Rossville.
September leads for comfortable weather in Rossville: typically 25.1°C by day, 12.5°C at night, with 78 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high25.1°C
Typical low12.5°C
Rain in September78 mm
August
August · July · June
71climate match
October
October · September · May
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° / -7.4°
Feb
53.5° / -5.7°
Mar
149.8° / -0.7°
Apr
4316.9° / 4.9°
May
7022.7° / 10.9°
Jun
6727.3° / 16°
Jul
6328.6° / 17.6°
Aug
7328° / 16.6°
Sep
8325.1° / 12.5°
Oct
5518.2° / 6.5°
Nov
1610.2° / 0.6°
Dec
53.7° / -4.3°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 1°C | -7.4°C | 75 mm | 8.7 | 9 h 35 | 5 | Strong coverage |
| February | 3.5°C | -5.7°C | 63 mm | 7.5 | 10 h 36 | 5 | Strong coverage |
| March | 9.8°C | -0.7°C | 79 mm | 8.8 | 11 h 49 | 14 | Strong coverage |
| April | 16.9°C | 4.9°C | 100 mm | 10.1 | 13 h 13 | 43 | Strong coverage |
| May | 22.7°C | 10.9°C | 112 mm | 11.1 | 14 h 24 | 70 | Strong coverage |
| June | 27.3°C | 16°C | 133 mm | 9.9 | 15 h 02 | 67 | Strong coverage |
| July | 28.6°C | 17.6°C | 121 mm | 8.7 | 14 h 47 | 63 | Strong coverage |
| August | 28°C | 16.6°C | 86 mm | 7.3 | 13 h 46 | 73 | Strong coverage |
| September | 25.1°C | 12.5°C | 78 mm | 6.5 | 12 h 25 | 83 | Strong coverage |
| October | 18.2°C | 6.5°C | 83 mm | 7.8 | 11 h 03 | 55 | Strong coverage |
| November | 10.2°C | 0.6°C | 88 mm | 8.1 | 9 h 53 | 16 | Strong coverage |
| December | 3.7°C | -4.3°C | 74 mm | 9.1 | 9 h 18 | 5 | Strong coverage |
What has changed
Rossville runs +0.6°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
+1.0
Mar
+1.4
Apr
+0.2
May
+0.7
Jun
+0.3
Jul
-0.4
Aug
0.0
Sep
+0.7
Oct
+0.7
Nov
+0.1
Dec
+2.3
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 21.1°C25 Jan 1950 | -31.7°C20 Jan 1985 | 77 mm10 Jan 1927 | 248 mm1950 · driest 6 mm in 1944 | 111 |
| February | 22.8°C8 Feb 1925 | -30.0°C5 Feb 1979 | 79 mm11 Feb 2009 | 159 mm2018 · driest 6 mm in 1941 | 108 |
| March | 29.4°C21 Mar 2012 | -26.7°C12 Mar 1948 | 86 mm12 Mar 1939 | 187 mm1925 · driest 16 mm in 1928 | 109 |
| April | 33.3°C11 Apr 1930 | -10.0°C12 Apr 1940 | 87 mm17 Apr 1922 | 227 mm1964 · driest 19 mm in 1924 | 108 |
| May | 36.1°C28 May 1914 | -7.8°C2 May 1978 | 125 mm18 May 1927 | 329 mm1943 · driest 18 mm in 1939 | 111 |
| June | 40.0°C29 Jun 1934 | -0.6°C5 Jun 1945 | 130 mm25 Jun 1978 | 326 mm1958 · driest 9 mm in 1991 | 112 |
| July | 42.2°C14 Jul 1936 | 4.4°C13 Jul 1940 | 118 mm11 Jul 1923 | 393 mm1992 · driest 18 mm in 1914 | 112 |
| August | 38.9°C22 Aug 1936 | 0.6°C30 Aug 1946 | 108 mm28 Aug 1989 | 231 mm1977 · driest 4 mm in 1996 | 111 |
| September | 38.3°C15 Sep 1939 | -3.3°C28 Sep 1942 | 100 mm1 Sep 1950 | 270 mm1926 · driest 5 mm in 1963 | 111 |
| October | 33.9°C7 Oct 1947 | -8.3°C18 Oct 1948 | 128 mm18 Oct 1917 | 230 mm1917 · driest 4 mm in 2024 | 110 |
| November | 25.6°C6 Nov 1975 | -20.0°C28 Nov 1930 | 80 mm19 Nov 1985 | 262 mm1985 · driest 3 mm in 1917 | 112 |
| December | 22.2°C2 Dec 1982 | -32.2°C24 Dec 1983 | 88 mm21 Dec 1967 | 213 mm1990 · driest 4 mm in 1930 | 112 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | 2 | 6 |
| February | 0 | 0 | 24 | 2 | 4 |
| March | <1 | 0 | 19 | 3 | 2 |
| April | 3 | 0 | 6 | 3 | <1 |
| May | 12 | 3 | <1 | 4 | 0 |
| June | 23 | 9 | 0 | 4 | 0 |
| July | 27 | 11 | 0 | 4 | 0 |
| August | 27 | 9 | 0 | 3 | 0 |
| September | 16 | 5 | <1 | 2 | 0 |
| October | 5 | <1 | 3 | 3 | 0 |
| November | <1 | 0 | 15 | 3 | <1 |
| December | 0 | 0 | 25 | 3 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 25% | 7% | 27% | -2.2–5.3°C |
| February | <1% | 24% | 6% | 24% | -0.5–6.5°C |
| March | 7% | 29% | 9% | 37% | 6.1–13.5°C |
| April | 22% | 34% | 11% | 45% | 14.2–19.4°C |
| May | 49% | 34% | 12% | 42% | 20.0–25.8°C |
| June | 68% | 30% | 13% | 36% | 25.5–29.7°C |
| July | 75% | 25% | 11% | 26% | 27.4–31.9°C |
| August | 76% | 23% | 9% | 22% | 26.8–30.4°C |
| September | 69% | 22% | 9% | 20% | 23.2–27.4°C |
| October | 36% | 24% | 9% | 26% | 15.9–21.6°C |
| November | 6% | 26% | 8% | 27% | 6.9–13.1°C |
| December | <1% | 27% | 8% | 31% | 0.1–7.1°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 4925610
- NOAA station
- USC00123082 · FRANKFORT DISPOSAL
- Station distance
- 15.1 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 30 usable years
- Daylight
- Calculated from latitude 40.42°, 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.