May
May · September · October
77climate match
United States · 1991–2020
Best time to visit
Seat Pleasant.
May leads for comfortable weather in Seat Pleasant: typically 24.9°C by day, 13.1°C at night, with 111 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortMay
Typical high24.9°C
Typical low13.1°C
Rain in May111 mm
August
August · July · June
74climate match
April
April · October · November
79climate match
The weakest month is January, scoring 5 against May’s 77 — days reach only 6.8°C, 17° 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
56.8° / -3°
Feb
118.6° / -2.1°
Mar
2713.3° / 1.9°
Apr
6019.8° / 7.4°
May
7724.9° / 13.1°
Jun
5829.6° / 18.4°
Jul
4632.1° / 21°
Aug
5431.2° / 19.9°
Sep
7227.5° / 15.8°
Oct
6621° / 8.8°
Nov
4014.8° / 3.4°
Dec
109.3° / -0.5°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 6.8°C | -3°C | 75 mm | 8 | 9 h 43 | 5 | Strong coverage |
| February | 8.6°C | -2.1°C | 64 mm | 7 | 10 h 41 | 11 | Strong coverage |
| March | 13.3°C | 1.9°C | 100 mm | 8.3 | 11 h 50 | 27 | Strong coverage |
| April | 19.8°C | 7.4°C | 86 mm | 9.2 | 13 h 10 | 60 | Strong coverage |
| May | 24.9°C | 13.1°C | 111 mm | 9.5 | 14 h 16 | 77 | Strong coverage |
| June | 29.6°C | 18.4°C | 121 mm | 9.3 | 14 h 53 | 58 | Strong coverage |
| July | 32.1°C | 21°C | 116 mm | 9.1 | 14 h 38 | 46 | Strong coverage |
| August | 31.2°C | 19.9°C | 97 mm | 8.2 | 13 h 41 | 54 | Strong coverage |
| September | 27.5°C | 15.8°C | 109 mm | 7.7 | 12 h 24 | 72 | Strong coverage |
| October | 21°C | 8.8°C | 100 mm | 7.1 | 11 h 07 | 66 | Strong coverage |
| November | 14.8°C | 3.4°C | 75 mm | 6.6 | 10 h | 40 | Strong coverage |
| December | 9.3°C | -0.5°C | 98 mm | 8.1 | 9 h 27 | 10 | Strong coverage |
What has changed
Seat Pleasant runs +1.0°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
+1.4
Feb
+2.0
Mar
+0.4
Apr
+1.1
May
+0.6
Jun
+0.9
Jul
+1.6
Aug
+0.9
Sep
+1.1
Oct
+0.9
Nov
-0.1
Dec
+1.6
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 26.7°C26 Jan 1950 | -23.3°C17 Jan 1982 | 62 mm1 Jan 1976 | 193 mm1978 · driest 7 mm in 2025 | 77 |
| February | 27.8°C26 Feb 2000 | -18.3°C2 Feb 1961 | 62 mm23 Feb 2003 | 206 mm2003 · driest 3 mm in 1987 | 77 |
| March | 32.2°C31 Mar 1998 | -13.9°C4 Mar 2014 | 66 mm29 Mar 1984 | 215 mm1994 · driest 2 mm in 2006 | 75 |
| April | 34.4°C19 Apr 1976 | -7.8°C8 Apr 1982 | 73 mm14 Apr 1970 | 189 mm1983 · driest 1 mm in 1985 | 76 |
| May | 38.3°C27 May 1991 | -3.9°C5 May 1966 | 93 mm12 May 2008 | 229 mm2008 · driest 23 mm in 1986 | 76 |
| June | 39.4°C30 Jun 2012 | 5.6°C1 Jun 1984 | 187 mm26 Jun 2006 | 331 mm2006 · driest 13 mm in 1988 | 77 |
| July | 41.1°C30 Jul 2011 | 8.3°C1 Jul 1988 | 122 mm29 Jul 2017 | 280 mm1975 · driest 15 mm in 1957 | 76 |
| August | 40.0°C1 Aug 1999 | 5.6°C29 Aug 1982 | 149 mm13 Aug 1955 | 367 mm1955 · driest 8 mm in 1989 | 77 |
| September | 38.9°C1 Sep 1953 | 1.1°C29 Sep 1989 | 157 mm6 Sep 1979 | 348 mm1975 · driest 0 mm in 2019 | 75 |
| October | 34.4°C5 Oct 1951 | -6.7°C31 Oct 1966 | 135 mm14 Oct 1955 | 256 mm2005 · driest 0 mm in 2000 | 76 |
| November | 30.6°C1 Nov 1950 | -12.2°C22 Nov 1987 | 74 mm9 Nov 1996 | 208 mm1963 · driest 10 mm in 2016 | 75 |
| December | 27.2°C8 Dec 1998 | -17.8°C25 Dec 1983 | 72 mm2 Dec 1974 | 204 mm1969 · driest 6 mm in 1955 | 76 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 22 | 3 | 3 |
| February | <1 | 0 | 19 | 2 | 2 |
| March | 1 | <1 | 12 | 4 | 1 |
| April | 6 | 2 | 1 | 3 | 0 |
| May | 16 | 6 | 0 | 4 | 0 |
| June | 26 | 16 | 0 | 4 | 0 |
| July | 30 | 24 | 0 | 4 | 0 |
| August | 29 | 21 | 0 | 3 | 0 |
| September | 22 | 9 | 0 | 3 | 0 |
| October | 7 | 1 | <1 | 3 | 0 |
| November | <1 | 0 | 8 | 3 | 0 |
| December | <1 | 0 | 18 | 3 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 2% | 25% | 9% | 26% | 3.7–9.9°C |
| February | 3% | 26% | 9% | 27% | 5.0–11.8°C |
| March | 14% | 26% | 11% | 29% | 10.5–16.3°C |
| April | 37% | 29% | 9% | 33% | 17.2–22.1°C |
| May | 61% | 31% | 11% | 39% | 22.4–27.1°C |
| June | 71% | 28% | 12% | 31% | 27.6–30.6°C |
| July | 72% | 28% | 11% | 31% | 30.0–33.6°C |
| August | 74% | 26% | 11% | 27% | 29.2–32.6°C |
| September | 75% | 23% | 9% | 24% | 25.5–29.3°C |
| October | 50% | 21% | 9% | 20% | 19.1–23.1°C |
| November | 16% | 22% | 9% | 20% | 12.3–17.4°C |
| December | 3% | 24% | 10% | 23% | 5.7–11.9°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 4369086
- NOAA station
- USC00186350 · NATL ARBORETUM DC
- Station distance
- 5.8 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 28 usable years
- Daylight
- Calculated from latitude 38.90°, 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.