May
May · September · October
84climate match
United States · 1991–2020
Best time to visit
Dale City.
May leads for comfortable weather in Dale City: typically 24°C by day, 13.7°C at night, with 88 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortMay
Typical high24°C
Typical low13.7°C
Rain in May88 mm
August
August · July · June
84climate match
October
October · April · May
86climate match
The weakest month is January, scoring 5 against May’s 84 — 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° / -2.3°
Feb
138.9° / -1.2°
Mar
3013.2° / 2.7°
Apr
6319.8° / 8.2°
May
8424° / 13.7°
Jun
6628.6° / 18.7°
Jul
5331° / 21.3°
Aug
6129.9° / 20.4°
Sep
7726.3° / 16.6°
Oct
6820.2° / 9.7°
Nov
3814.2° / 3.9°
Dec
149.2° / 0.2°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 6.9°C | -2.3°C | 65 mm | 7.1 | 9 h 44 | 5 | Strong coverage |
| February | 8.9°C | -1.2°C | 65 mm | 7.1 | 10 h 41 | 13 | Strong coverage |
| March | 13.2°C | 2.7°C | 89 mm | 8.5 | 11 h 50 | 30 | Strong coverage |
| April | 19.8°C | 8.2°C | 79 mm | 8.2 | 13 h 09 | 63 | Strong coverage |
| May | 24°C | 13.7°C | 88 mm | 9.4 | 14 h 15 | 84 | Strong coverage |
| June | 28.6°C | 18.7°C | 91 mm | 8.2 | 14 h 51 | 66 | Strong coverage |
| July | 31°C | 21.3°C | 94 mm | 7.1 | 14 h 37 | 53 | Strong coverage |
| August | 29.9°C | 20.4°C | 81 mm | 6.1 | 13 h 40 | 61 | Strong coverage |
| September | 26.3°C | 16.6°C | 96 mm | 6.9 | 12 h 23 | 77 | Strong coverage |
| October | 20.2°C | 9.7°C | 86 mm | 6.6 | 11 h 07 | 68 | Strong coverage |
| November | 14.2°C | 3.9°C | 82 mm | 6.6 | 10 h 01 | 38 | Strong coverage |
| December | 9.2°C | 0.2°C | 78 mm | 7.8 | 9 h 29 | 14 | Strong coverage |
What has changed
Dale City runs +0.8°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
+0.8
Feb
+1.8
Mar
+1.0
Apr
+1.2
May
+0.4
Jun
+0.2
Jul
+1.0
Aug
+0.3
Sep
+0.6
Oct
+0.6
Nov
+0.1
Dec
+1.9
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 27.8°C30 Jan 2002 | -20.6°C28 Jan 1961 | 49 mm28 Jan 1998 | 146 mm1998 · driest 1 mm in 2018 | 72 |
| February | 29.4°C11 Feb 2009 | -21.1°C5 Feb 1996 | 63 mm4 Feb 1998 | 209 mm1998 · driest 0 mm in 1982 | 74 |
| March | 31.7°C13 Mar 1990 | -13.3°C11 Mar 1960 | 63 mm28 Mar 1994 | 244 mm1994 · driest 13 mm in 1945 | 73 |
| April | 35.6°C26 Apr 1990 | -4.4°C14 Apr 1950 | 62 mm16 Apr 2018 | 189 mm1953 · driest 6 mm in 1985 | 73 |
| May | 37.2°C30 May 1991 | -0.6°C28 May 1961 | 58 mm18 May 2018 | 234 mm1971 · driest 0 mm in 2010 | 73 |
| June | 40.6°C29 Jun 2012 | 6.1°C3 Jun 1966 | 127 mm21 Jun 1972 | 261 mm2015 · driest 0 mm in 2010 | 74 |
| July | 41.1°C7 Jul 2012 | 9.4°C2 Jul 1952 | 127 mm8 Jul 2025 | 247 mm1959 · driest 0 mm in 2010 | 75 |
| August | 40.0°C17 Aug 1988 | 7.8°C29 Aug 1986 | 119 mm24 Aug 1958 | 299 mm1955 · driest 3 mm in 2003 | 74 |
| September | 40.6°C7 Sep 1954 | 3.3°C27 Sep 1947 | 134 mm30 Sep 2010 | 343 mm1975 · driest 0 mm in 1982 | 74 |
| October | 36.1°C2 Oct 2019 | -4.4°C30 Oct 1952 | 94 mm29 Oct 2012 | 214 mm2005 · driest 0 mm in 2024 | 74 |
| November | 29.4°C28 Nov 2015 | -10.6°C29 Nov 1955 | 69 mm8 Nov 1996 | 203 mm1985 · driest 11 mm in 1965 | 72 |
| December | 27.2°C6 Dec 1998 | -15.6°C17 Dec 1951 | 84 mm7 Dec 2011 | 197 mm1973 · driest 0 mm in 2018 | 74 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 21 | 2 | 2 |
| February | <1 | 0 | 18 | 2 | 2 |
| March | 2 | <1 | 10 | 3 | <1 |
| April | 6 | 1 | 1 | 3 | 0 |
| May | 14 | 4 | 0 | 3 | 0 |
| June | 25 | 13 | 0 | 3 | 0 |
| July | 30 | 20 | 0 | 3 | 0 |
| August | 29 | 15 | 0 | 2 | 0 |
| September | 20 | 6 | 0 | 3 | 0 |
| October | 5 | <1 | <1 | 3 | 0 |
| November | <1 | 0 | 7 | 2 | <1 |
| December | <1 | 0 | 17 | 3 | 1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 2% | 26% | 8% | 30% | 3.9–9.6°C |
| February | 4% | 25% | 8% | 29% | 5.4–12.2°C |
| March | 14% | 27% | 10% | 29% | 10.1–16.1°C |
| April | 38% | 27% | 9% | 31% | 17.8–21.8°C |
| May | 60% | 31% | 10% | 37% | 22.2–26.5°C |
| June | 74% | 25% | 9% | 28% | 26.9–30.5°C |
| July | 74% | 26% | 9% | 27% | 29.3–32.6°C |
| August | 78% | 22% | 9% | 21% | 28.5–31.3°C |
| September | 75% | 22% | 9% | 22% | 24.6–27.7°C |
| October | 48% | 20% | 8% | 18% | 18.6–22.6°C |
| November | 13% | 23% | 9% | 21% | 11.6–17.3°C |
| December | 3% | 25% | 9% | 26% | 5.3–11.5°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 4755158
- NOAA station
- USW00013773 · QUANTICO MCAS
- Station distance
- 14.8 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 25 usable years
- Daylight
- Calculated from latitude 38.64°, 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.