May
May · September · October
82climate match
United States · 1991–2020
Best time to visit
Anacostia.
May leads for comfortable weather in Anacostia: typically 24.5°C by day, 14.2°C at night, with 100 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortMay
Typical high24.5°C
Typical low14.2°C
Rain in May100 mm
August
August · June · July
81climate match
April
April · October · November
83climate match
The weakest month is January, scoring 5 against May’s 82 — days reach only 6.9°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
56.9° / -1.3°
Feb
148.8° / -0.3°
Mar
3213.4° / 3.4°
Apr
6319.7° / 8.8°
May
8224.5° / 14.2°
Jun
6029.3° / 19.4°
Jul
4631.7° / 22.2°
Aug
5630.7° / 21.4°
Sep
7326.8° / 17.6°
Oct
7020.5° / 10.9°
Nov
4214.3° / 5.1°
Dec
149° / 1.1°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 6.9°C | -1.3°C | 73 mm | 7.3 | 9 h 43 | 5 | Strong coverage |
| February | 8.8°C | -0.3°C | 66 mm | 7.3 | 10 h 41 | 14 | Strong coverage |
| March | 13.4°C | 3.4°C | 89 mm | 8.7 | 11 h 50 | 32 | Strong coverage |
| April | 19.7°C | 8.8°C | 81 mm | 8.2 | 13 h 10 | 63 | Strong coverage |
| May | 24.5°C | 14.2°C | 100 mm | 9.1 | 14 h 16 | 82 | Strong coverage |
| June | 29.3°C | 19.4°C | 107 mm | 8.4 | 14 h 52 | 60 | Strong coverage |
| July | 31.7°C | 22.2°C | 110 mm | 8.3 | 14 h 38 | 46 | Strong coverage |
| August | 30.7°C | 21.4°C | 83 mm | 7 | 13 h 41 | 56 | Strong coverage |
| September | 26.8°C | 17.6°C | 100 mm | 6.9 | 12 h 24 | 73 | Strong coverage |
| October | 20.5°C | 10.9°C | 93 mm | 6.2 | 11 h 07 | 70 | Strong coverage |
| November | 14.3°C | 5.1°C | 74 mm | 6.3 | 10 h | 42 | Strong coverage |
| December | 9°C | 1.1°C | 87 mm | 8 | 9 h 27 | 14 | Strong coverage |
What has changed
Anacostia runs +1.1°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
+1.6
Feb
+2.3
Mar
+1.1
Apr
+1.2
May
+0.4
Jun
+0.7
Jul
+1.3
Aug
+0.6
Sep
+0.7
Oct
+0.8
Nov
+0.2
Dec
+2.0
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 26.7°C26 Jan 2024 | -20.6°C17 Jan 1982 | 57 mm9 Jan 2024 | 181 mm1978 · driest 8 mm in 1955 | 85 |
| February | 27.8°C28 Feb 1948 | -15.6°C2 Feb 1961 | 58 mm22 Feb 2003 | 177 mm2003 · driest 9 mm in 2009 | 85 |
| March | 31.7°C29 Mar 1945 | -11.7°C4 Mar 1943 | 58 mm13 Mar 1993 | 215 mm1994 · driest 1 mm in 2006 | 85 |
| April | 35.0°C17 Apr 2002 | -4.4°C7 Apr 1982 | 77 mm14 Apr 1970 | 175 mm1983 · driest 1 mm in 1985 | 85 |
| May | 37.2°C31 May 1991 | 1.1°C9 May 1947 | 82 mm5 May 1953 | 272 mm1953 · driest 19 mm in 1986 | 85 |
| June | 40.0°C29 Jun 2012 | 8.3°C11 Jun 1972 | 155 mm21 Jun 1972 | 356 mm2006 · driest 20 mm in 1941 | 86 |
| July | 40.6°C7 Jul 2012 | 12.2°C1 Jul 1988 | 119 mm9 Jul 1970 | 281 mm1945 · driest 24 mm in 1966 | 86 |
| August | 40.6°C17 Aug 1997 | 9.4°C29 Aug 1986 | 145 mm8 Aug 1942 | 364 mm1955 · driest 5 mm in 2025 | 85 |
| September | 38.3°C2 Sep 1980 | 3.9°C24 Sep 1963 | 121 mm16 Sep 1976 | 314 mm1975 · driest 3 mm in 2005 | 85 |
| October | 36.7°C2 Oct 2019 | -1.7°C24 Oct 1969 | 98 mm29 Oct 2012 | 239 mm2005 · driest 0 mm in 1963 | 85 |
| November | 30.0°C1 Nov 1974 | -8.9°C29 Nov 1955 | 78 mm8 Nov 1943 | 192 mm2018 · driest 7 mm in 1981 | 85 |
| December | 26.1°C7 Dec 1998 | -17.2°C21 Dec 1942 | 79 mm7 Dec 2011 | 172 mm2009 · driest 6 mm in 1955 | 85 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 20 | 2 | 3 |
| February | <1 | 0 | 16 | 2 | 3 |
| March | 1 | 0 | 8 | 3 | 1 |
| April | 6 | 1 | <1 | 3 | 0 |
| May | 15 | 5 | 0 | 4 | 0 |
| June | 26 | 15 | 0 | 3 | 0 |
| July | 30 | 23 | 0 | 4 | 0 |
| August | 30 | 20 | 0 | 3 | 0 |
| September | 21 | 7 | 0 | 3 | 0 |
| October | 6 | <1 | 0 | 3 | 0 |
| November | <1 | 0 | 4 | 3 | <1 |
| December | <1 | 0 | 13 | 3 | 1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 2% | 25% | 8% | 25% | 3.4–9.8°C |
| February | 3% | 26% | 9% | 27% | 4.7–11.6°C |
| March | 14% | 28% | 9% | 30% | 10.6–16.5°C |
| April | 38% | 26% | 9% | 28% | 17.3–22.2°C |
| May | 61% | 30% | 12% | 36% | 22.5–26.5°C |
| June | 74% | 26% | 10% | 27% | 27.3–30.7°C |
| July | 73% | 27% | 12% | 28% | 29.5–33.2°C |
| August | 77% | 23% | 10% | 22% | 28.7–31.8°C |
| September | 75% | 22% | 9% | 20% | 24.8–28.6°C |
| October | 48% | 19% | 8% | 17% | 18.7–22.7°C |
| November | 14% | 22% | 8% | 20% | 11.7–16.7°C |
| December | 2% | 24% | 10% | 24% | 5.0–11.5°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 4137523
- NOAA station
- USW00013743 · WASHINGTON REAGAN NATL AP
- Station distance
- 4.9 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 30 usable years
- Daylight
- Calculated from latitude 38.87°, 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.