May
May · June · October
79climate match
United States · 1991–2020
Best time to visit
Williams.
May leads for comfortable weather in Williams: typically 24.1°C by day, 6°C at night, with 40 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortMay
Typical high24.1°C
Typical low6°C
Rain in May40 mm
June
June · July · September
61climate match
October
October · May · April
77climate match
The weakest month is December, scoring 5 against May’s 79 — days reach only 9.4°C, 15° below the 24°C the score treats as ideal, and nights drop to -1.1°C.
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
1010.5° / -0.9°
Feb
2813.5° / -0.7°
Mar
3516.2° / 0.8°
Apr
5218.9° / 2.7°
May
7924.1° / 6°
Jun
7428.1° / 8.4°
Jul
6233.6° / 11.5°
Aug
6233.2° / 10.6°
Sep
6729.5° / 7°
Oct
7022.4° / 3.2°
Nov
2813.6° / 0.9°
Dec
59.4° / -1.1°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 10.5°C | -0.9°C | 101 mm | 11.5 | 9 h 25 | 10 | Strong coverage |
| February | 13.5°C | -0.7°C | 65 mm | 8.3 | 10 h 30 | 28 | Strong coverage |
| March | 16.2°C | 0.8°C | 77 mm | 11.3 | 11 h 48 | 35 | Strong coverage |
| April | 18.9°C | 2.7°C | 56 mm | 10.1 | 13 h 18 | 52 | Strong coverage |
| May | 24.1°C | 6°C | 40 mm | 6.8 | 14 h 33 | 79 | Strong coverage |
| June | 28.1°C | 8.4°C | 17 mm | 3.7 | 15 h 15 | 74 | Strong coverage |
| July | 33.6°C | 11.5°C | 9 mm | 1.3 | 14 h 58 | 62 | Strong coverage |
| August | 33.2°C | 10.6°C | 7 mm | 1 | 13 h 53 | 62 | Strong coverage |
| September | 29.5°C | 7°C | 11 mm | 2 | 12 h 26 | 67 | Strong coverage |
| October | 22.4°C | 3.2°C | 46 mm | 5.3 | 10 h 59 | 70 | Good coverage |
| November | 13.6°C | 0.9°C | 79 mm | 10.4 | 9 h 44 | 28 | Strong coverage |
| December | 9.4°C | -1.1°C | 125 mm | 12.2 | 9 h 06 | 5 | Strong coverage |
What has changed
Williams runs +1.4°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
+2.3
Feb
+0.1
Mar
+0.5
Apr
+1.3
May
+1.1
Jun
+1.3
Jul
+2.0
Aug
+2.2
Sep
+1.4
Oct
+1.3
Nov
+1.9
Dec
+1.5
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 21.7°C25 Jan 2014 | -13.3°C29 Jan 1980 | 86 mm6 Jan 1966 | 227 mm1969 · driest 4 mm in 1984 | 58 |
| February | 27.2°C25 Feb 1992 | -16.7°C5 Feb 1989 | 58 mm16 Feb 2017 | 179 mm1983 · driest 3 mm in 2020 | 58 |
| March | 31.1°C10 Mar 2005 | -7.8°C11 Mar 2009 | 77 mm15 Mar 2022 | 207 mm1975 · driest 12 mm in 1994 | 57 |
| April | 34.4°C29 Apr 2023 | -6.7°C1 Apr 2008 | 89 mm22 Apr 2016 | 141 mm2016 · driest 2 mm in 2021 | 59 |
| May | 38.9°C18 May 2006 | -3.9°C3 May 1965 | 74 mm2 May 2022 | 135 mm2020 · driest 0 mm in 2021 | 58 |
| June | 44.4°C28 Jun 2021 | -1.1°C6 Jun 2008 | 29 mm29 Jun 1978 | 65 mm1982 · driest 0 mm in 1998 | 56 |
| July | 43.3°C30 Jul 2022 | 1.1°C1 Jul 1976 | 42 mm2 Jul 1990 | 50 mm2014 · driest 0 mm in 1971 | 57 |
| August | 43.9°C8 Aug 1981 | 0.0°C26 Aug 2009 | 30 mm8 Aug 2013 | 72 mm1976 · driest 0 mm in 2016 | 57 |
| September | 41.1°C3 Sep 2003 | -5.6°C7 Sep 2009 | 70 mm28 Sep 1977 | 111 mm1977 · driest 0 mm in 2018 | 58 |
| October | 38.9°C2 Oct 1980 | -8.3°C31 Oct 2002 | 61 mm31 Oct 1994 | 204 mm2016 · driest 1 mm in 1987 | 54 |
| November | 28.3°C2 Nov 1991 | -11.1°C1 Nov 2003 | 76 mm30 Nov 2012 | 264 mm1973 · driest 18 mm in 1976 | 56 |
| December | 21.7°C17 Dec 1979 | -19.4°C21 Dec 1990 | 77 mm13 Dec 2015 | 343 mm2002 · driest 0 mm in 1998 | 58 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 18 | 3 | <1 |
| February | <1 | 0 | 17 | 2 | <1 |
| March | 1 | 0 | 13 | 2 | <1 |
| April | 4 | <1 | 7 | 1 | 0 |
| May | 13 | 5 | 2 | <1 | 0 |
| June | 20 | 11 | <1 | <1 | 0 |
| July | 28 | 24 | 0 | <1 | 0 |
| August | 28 | 23 | 0 | <1 | 0 |
| September | 21 | 15 | <1 | <1 | 0 |
| October | 10 | 3 | 6 | 1 | 0 |
| November | <1 | 0 | 12 | 2 | <1 |
| December | 0 | 0 | 18 | 4 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 38% | 11% | 50% | 8.0–12.1°C |
| February | 6% | 32% | 8% | 43% | 11.0–15.7°C |
| March | 20% | 36% | 7% | 45% | 13.0–18.7°C |
| April | 38% | 31% | 3% | 37% | 15.6–22.3°C |
| May | 67% | 19% | 2% | 21% | 21.7–26.2°C |
| June | 83% | 13% | 1% | 11% | 25.5–30.1°C |
| July | 95% | 5% | <1% | 2% | 29.9–35.3°C |
| August | 94% | 6% | <1% | 5% | 30.2–34.6°C |
| September | 87% | 10% | 2% | 9% | 26.2–31.6°C |
| October | 60% | 19% | 4% | 23% | 18.7–24.8°C |
| November | 5% | 38% | 10% | 56% | 11.2–15.2°C |
| December | <1% | 41% | 13% | 55% | 6.9–10.4°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 5760956
- NOAA station
- USC00357391 · RUCH
- Station distance
- 18.7 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 24 usable years
- Daylight
- Calculated from latitude 42.22°, 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.