May
May · September · June
74climate match
United States · 1991–2020
Best time to visit
Marietta.
May leads for comfortable weather in Marietta: typically 23.5°C by day, 9.9°C at night, with 96 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortMay
Typical high23.5°C
Typical low9.9°C
Rain in May96 mm
August
August · July · June
69climate match
October
October · May · April
73climate match
The weakest month is January, scoring 5 against May’s 74 — days reach only 4°C, 20° 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
54° / -6.1°
Feb
55.8° / -5.5°
Mar
1511° / -1.4°
Apr
4718.2° / 3.8°
May
7423.5° / 9.9°
Jun
7028° / 15.1°
Jul
5830.1° / 17.2°
Aug
6729.2° / 16.1°
Sep
7425.6° / 12.2°
Oct
5419.2° / 5.9°
Nov
2712.4° / 0.7°
Dec
56.3° / -3.5°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 4°C | -6.1°C | 75 mm | 7.9 | 9 h 37 | 5 | Strong coverage |
| February | 5.8°C | -5.5°C | 61 mm | 7 | 10 h 37 | 5 | Strong coverage |
| March | 11°C | -1.4°C | 92 mm | 8.3 | 11 h 49 | 15 | Strong coverage |
| April | 18.2°C | 3.8°C | 91 mm | 9.2 | 13 h 12 | 47 | Strong coverage |
| May | 23.5°C | 9.9°C | 96 mm | 10.4 | 14 h 22 | 74 | Strong coverage |
| June | 28°C | 15.1°C | 110 mm | 9.6 | 15 h | 70 | Strong coverage |
| July | 30.1°C | 17.2°C | 124 mm | 9.3 | 14 h 45 | 58 | Strong coverage |
| August | 29.2°C | 16.1°C | 100 mm | 8.1 | 13 h 45 | 67 | Strong coverage |
| September | 25.6°C | 12.2°C | 120 mm | 7.3 | 12 h 24 | 74 | Strong coverage |
| October | 19.2°C | 5.9°C | 104 mm | 7.6 | 11 h 04 | 54 | Strong coverage |
| November | 12.4°C | 0.7°C | 78 mm | 6.5 | 9 h 54 | 27 | Strong coverage |
| December | 6.3°C | -3.5°C | 84 mm | 8.2 | 9 h 20 | 5 | Strong coverage |
What has changed
Marietta runs +0.7°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
+1.2
Feb
+1.5
Mar
+0.7
Apr
+0.9
May
+0.4
Jun
+0.1
Jul
+0.9
Aug
+0.1
Sep
+0.4
Oct
+0.5
Nov
+0.2
Dec
+1.8
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 21.7°C26 Jan 1967 | -31.1°C21 Jan 1994 | 52 mm21 Jan 1979 | 224 mm1979 · driest 5 mm in 1981 | 71 |
| February | 27.2°C22 Feb 2018 | -28.9°C14 Feb 1979 | 66 mm14 Feb 2007 | 155 mm2008 · driest 7 mm in 2002 | 71 |
| March | 30.0°C30 Mar 1998 | -25.0°C7 Mar 2015 | 73 mm22 Mar 2019 | 165 mm2000 · driest 19 mm in 2006 | 71 |
| April | 33.3°C18 Apr 1976 | -8.3°C1 Apr 1964 | 75 mm7 Apr 2017 | 250 mm1983 · driest 1 mm in 2015 | 73 |
| May | 34.4°C21 May 1996 | -5.6°C1 May 1978 | 79 mm6 May 1989 | 236 mm1989 · driest 20 mm in 1969 | 73 |
| June | 37.2°C19 Jun 1957 | 1.1°C3 Jun 1986 | 197 mm22 Jun 1972 | 371 mm1972 · driest 0 mm in 1969 | 71 |
| July | 38.9°C23 Jul 1991 | 5.0°C21 Jul 1966 | 118 mm23 Jul 1969 | 310 mm1994 · driest 7 mm in 1983 | 71 |
| August | 38.9°C9 Aug 2001 | 1.7°C29 Aug 1982 | 120 mm4 Aug 2018 | 307 mm1955 · driest 11 mm in 1957 | 72 |
| September | 38.3°C4 Sep 1953 | -2.8°C28 Sep 1957 | 179 mm1 Sep 2018 | 328 mm2011 · driest 9 mm in 1961 | 73 |
| October | 32.8°C9 Oct 2007 | -7.8°C24 Oct 1969 | 162 mm11 Oct 2013 | 257 mm2013 · driest 0 mm in 1963 | 73 |
| November | 27.8°C1 Nov 1984 | -11.7°C22 Nov 2008 | 95 mm28 Nov 1993 | 184 mm1972 · driest 16 mm in 1976 | 71 |
| December | 24.4°C29 Dec 1984 | -24.4°C31 Dec 1963 | 80 mm5 Dec 1993 | 211 mm1983 · driest 0 mm in 2015 | 70 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 26 | 3 | 5 |
| February | 0 | 0 | 24 | 2 | 4 |
| March | <1 | 0 | 20 | 3 | 2 |
| April | 4 | <1 | 8 | 3 | <1 |
| May | 13 | 4 | <1 | 3 | 0 |
| June | 24 | 10 | 0 | 4 | 0 |
| July | 30 | 17 | 0 | 4 | 0 |
| August | 29 | 13 | 0 | 3 | 0 |
| September | 17 | 4 | <1 | 3 | 0 |
| October | 4 | <1 | 5 | 3 | <1 |
| November | <1 | 0 | 16 | 3 | <1 |
| December | 0 | 0 | 24 | 3 | 2 |
The best month has moved. On the 1961–1990 numbers the strongest month here was September (scoring 82); on 2011–2025 it is May (80). Both are scored the same way, from the same station — only the climate underneath changed.
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 25% | 8% | 25% | 0.1–6.3°C |
| February | 1% | 25% | 7% | 28% | 1.6–8.8°C |
| March | 8% | 27% | 9% | 33% | 7.2–14.0°C |
| April | 27% | 30% | 10% | 37% | 14.8–19.5°C |
| May | 54% | 32% | 11% | 42% | 20.4–25.1°C |
| June | 68% | 30% | 11% | 36% | 26.1–29.2°C |
| July | 72% | 28% | 11% | 31% | 28.1–31.9°C |
| August | 74% | 26% | 10% | 27% | 27.5–30.6°C |
| September | 69% | 24% | 10% | 25% | 23.8–27.6°C |
| October | 37% | 23% | 9% | 23% | 16.9–21.0°C |
| November | 7% | 24% | 9% | 24% | 9.6–15.0°C |
| December | <1% | 25% | 9% | 28% | 2.5–9.2°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 5199879
- NOAA station
- USC00364778 · LANDISVILLE 2 NW
- Station distance
- 12.7 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 28 usable years
- Daylight
- Calculated from latitude 40.06°, 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.