September
September · June · August
80climate match
United States · 1991–2020
Best time to visit
Boone.
September leads for comfortable weather in Boone: typically 24.4°C by day, 10.9°C at night, with 84 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high24.4°C
Typical low10.9°C
Rain in September84 mm
July
July · August · June
68climate match
September
September · October · May
71climate match
The weakest month is January, scoring 5 against September’s 80 — days reach only -2.2°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
5-2.2° / -12.7°
Feb
50.7° / -10.4°
Mar
77.9° / -3.6°
Apr
3415.5° / 2.6°
May
6021.6° / 9.2°
Jun
6927° / 14.8°
Jul
6328.9° / 17.1°
Aug
6827.8° / 16°
Sep
8024.4° / 10.9°
Oct
4817.3° / 3.8°
Nov
118.2° / -2.9°
Dec
50.9° / -9°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | -2.2°C | -12.7°C | 30 mm | 5.7 | 9 h 25 | 5 | Strong coverage |
| February | 0.7°C | -10.4°C | 36 mm | 5.8 | 10 h 30 | 5 | Strong coverage |
| March | 7.9°C | -3.6°C | 56 mm | 7.1 | 11 h 48 | 7 | Strong coverage |
| April | 15.5°C | 2.6°C | 103 mm | 9.6 | 13 h 17 | 34 | Strong coverage |
| May | 21.6°C | 9.2°C | 133 mm | 11.5 | 14 h 32 | 60 | Strong coverage |
| June | 27°C | 14.8°C | 136 mm | 10.4 | 15 h 14 | 69 | Strong coverage |
| July | 28.9°C | 17.1°C | 123 mm | 8 | 14 h 57 | 63 | Strong coverage |
| August | 27.8°C | 16°C | 123 mm | 8.4 | 13 h 52 | 68 | Strong coverage |
| September | 24.4°C | 10.9°C | 84 mm | 7.4 | 12 h 26 | 80 | Strong coverage |
| October | 17.3°C | 3.8°C | 75 mm | 7.3 | 11 h | 48 | Strong coverage |
| November | 8.2°C | -2.9°C | 53 mm | 5.6 | 9 h 44 | 11 | Strong coverage |
| December | 0.9°C | -9°C | 40 mm | 5.8 | 9 h 07 | 5 | Strong coverage |
What has changed
Boone runs +0.1°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
+0.4
Feb
-0.6
Mar
+0.9
Apr
-0.6
May
-0.9
Jun
+0.1
Jul
-1.2
Aug
-0.7
Sep
+1.0
Oct
-0.4
Nov
+0.5
Dec
+2.2
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 20.0°C27 Jan 2002 | -37.2°C22 Jan 1930 | 38 mm19 Jan 1935 | 82 mm1949 · driest 0 mm in 1948 | 121 |
| February | 25.0°C24 Feb 1930 | -37.2°C3 Feb 1996 | 48 mm21 Feb 1976 | 83 mm1915 · driest 0 mm in 1970 | 120 |
| March | 32.8°C22 Mar 2026 | -30.0°C19 Mar 1923 | 58 mm8 Mar 1990 | 156 mm1990 · driest 4 mm in 1994 | 119 |
| April | 35.0°C23 Apr 1980 | -18.3°C6 Apr 1982 | 81 mm27 Apr 2009 | 202 mm1991 · driest 6 mm in 1926 | 119 |
| May | 43.3°C30 May 1934 | -6.1°C4 May 1907 | 135 mm30 May 2008 | 280 mm2008 · driest 6 mm in 1934 | 121 |
| June | 41.1°C27 Jun 1934 | 1.7°C6 Jun 1983 | 104 mm25 Jun 1968 | 332 mm1998 · driest 9 mm in 1933 | 121 |
| July | 43.9°C14 Jul 1936 | 4.4°C2 Jul 1932 | 154 mm9 Jul 1993 | 414 mm1993 · driest 9 mm in 1936 | 120 |
| August | 43.9°C5 Aug 1934 | 1.7°C30 Aug 1915 | 150 mm20 Aug 2007 | 339 mm1954 · driest 4 mm in 1984 | 120 |
| September | 39.4°C6 Sep 1913 | -5.0°C23 Sep 1983 | 107 mm19 Sep 1926 | 237 mm1965 · driest 2 mm in 1952 | 120 |
| October | 35.0°C5 Oct 1963 | -21.1°C30 Oct 1925 | 83 mm27 Oct 1918 | 196 mm2009 · driest 3 mm in 1952 | 119 |
| November | 27.8°C1 Nov 1938 | -23.9°C26 Nov 1977 | 78 mm23 Nov 1931 | 195 mm1931 · driest 0 mm in 1976 | 119 |
| December | 22.2°C6 Dec 1939 | -31.7°C28 Dec 1924 | 61 mm14 Dec 2015 | 156 mm2015 · driest 0 mm in 2002 | 120 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 31 | <1 | 6 |
| February | 0 | 0 | 27 | 1 | 6 |
| March | <1 | 0 | 24 | 2 | 3 |
| April | 3 | <1 | 10 | 4 | <1 |
| May | 10 | 2 | <1 | 4 | <1 |
| June | 21 | 8 | 0 | 4 | 0 |
| July | 28 | 12 | 0 | 4 | 0 |
| August | 25 | 9 | 0 | 4 | 0 |
| September | 16 | 5 | <1 | 3 | 0 |
| October | 4 | <1 | 9 | 2 | <1 |
| November | <1 | 0 | 22 | 2 | 2 |
| December | 0 | 0 | 30 | 1 | 5 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 16% | 3% | 11% | -6.1–2.4°C |
| February | <1% | 17% | 3% | 13% | -3.7–5.1°C |
| March | 7% | 21% | 6% | 21% | 3.5–11.9°C |
| April | 24% | 28% | 10% | 34% | 12.6–18.6°C |
| May | 48% | 33% | 12% | 42% | 19.8–25.2°C |
| June | 66% | 31% | 14% | 37% | 24.8–29.8°C |
| July | 75% | 25% | 11% | 26% | 27.6–32.4°C |
| August | 74% | 26% | 10% | 27% | 26.7–31.1°C |
| September | 64% | 24% | 10% | 26% | 22.5–27.1°C |
| October | 36% | 21% | 7% | 20% | 15.3–21.0°C |
| November | 5% | 17% | 5% | 13% | 5.0–11.4°C |
| December | <1% | 16% | 3% | 12% | -3.2–4.2°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 4849051
- NOAA station
- USC00130807 · BOONE
- Station distance
- 2.2 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 29 usable years
- Daylight
- Calculated from latitude 42.06°, 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.