May
May · June · September
74climate match
United States · 1991–2020
Best time to visit
Twain.
May leads for comfortable weather in Twain: typically 23.1°C by day, 4.4°C at night, with 46 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortMay
Typical high23.1°C
Typical low4.4°C
Rain in May46 mm
June
June · July · September
58climate match
May
May · October · June
75climate match
The weakest month is January, scoring 5 against May’s 74 — days reach only 8°C, 16° below the 24°C the score treats as ideal, and nights drop to -3.2°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
58° / -3.2°
Feb
511.1° / -2.6°
Mar
1314.8° / -0.8°
Apr
4217.6° / 0.7°
May
7423.1° / 4.4°
Jun
7327.9° / 7.1°
Jul
6132.7° / 9.3°
Aug
6032.1° / 7.9°
Sep
6529° / 4.9°
Oct
6421.8° / 1°
Nov
1812.5° / -1.4°
Dec
57.2° / -3.2°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 8°C | -3.2°C | 192 mm | 10.7 | 9 h 37 | 5 | Strong coverage |
| February | 11.1°C | -2.6°C | 179 mm | 10.2 | 10 h 37 | 5 | Strong coverage |
| March | 14.8°C | -0.8°C | 180 mm | 11.2 | 11 h 49 | 13 | Strong coverage |
| April | 17.6°C | 0.7°C | 85 mm | 7.8 | 13 h 12 | 42 | Strong coverage |
| May | 23.1°C | 4.4°C | 46 mm | 5.9 | 14 h 22 | 74 | Strong coverage |
| June | 27.9°C | 7.1°C | 18 mm | 2.4 | 15 h | 73 | Strong coverage |
| July | 32.7°C | 9.3°C | 2 mm | 0.3 | 14 h 45 | 61 | Strong coverage |
| August | 32.1°C | 7.9°C | 4 mm | 0.6 | 13 h 45 | 60 | Strong coverage |
| September | 29°C | 4.9°C | 8 mm | 1.2 | 12 h 24 | 65 | Strong coverage |
| October | 21.8°C | 1°C | 51 mm | 4.3 | 11 h 04 | 64 | Strong coverage |
| November | 12.5°C | -1.4°C | 108 mm | 7.3 | 9 h 55 | 18 | Strong coverage |
| December | 7.2°C | -3.2°C | 217 mm | 11 | 9 h 20 | 5 | Strong coverage |
What has changed
Twain 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
-0.2
Feb
-1.0
Mar
-0.7
Apr
+0.2
May
-1.4
Jun
-0.4
Jul
-0.2
Aug
-0.2
Sep
-0.3
Oct
-1.8
Nov
-1.3
Dec
-0.6
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 23.3°C23 Jan 1918 | -31.1°C20 Jan 1937 | 119 mm3 Jan 1916 | 893 mm1909 · driest 2 mm in 1984 | 119 |
| February | 26.7°C17 Feb 1920 | -26.7°C5 Feb 1989 | 135 mm24 Feb 1904 | 561 mm1904 · driest 0 mm in 1912 | 122 |
| March | 30.6°C21 Mar 2026 | -17.8°C1 Mar 1955 | 165 mm18 Mar 1907 | 766 mm1907 · driest 0 mm in 2026 | 122 |
| April | 31.7°C21 Apr 2009 | -11.1°C6 Apr 1982 | 93 mm8 Apr 1950 | 332 mm1948 · driest 0 mm in 1910 | 125 |
| May | 37.8°C24 May 1992 | -6.7°C7 May 1984 | 67 mm5 May 2024 | 176 mm1915 · driest 0 mm in 1929 | 125 |
| June | 40.6°C17 Jun 1985 | -3.9°C4 Jun 1950 | 45 mm11 Jun 1907 | 93 mm1907 · driest 0 mm in 2003 | 124 |
| July | 43.9°C31 Jul 1994 | -5.0°C1 Jul 1912 | 28 mm8 Jul 1974 | 48 mm1974 · driest 0 mm in 2007 | 123 |
| August | 43.9°C6 Aug 1994 | -6.7°C31 Aug 1910 | 56 mm12 Aug 1965 | 63 mm1965 · driest 0 mm in 2006 | 126 |
| September | 43.3°C5 Sep 1988 | -9.4°C28 Sep 1972 | 77 mm12 Sep 1895 | 159 mm1895 · driest 0 mm in 2018 | 125 |
| October | 36.7°C22 Oct 1988 | -12.2°C6 Oct 1913 | 170 mm25 Oct 2021 | 433 mm1962 · driest 0 mm in 2020 | 125 |
| November | 30.0°C9 Nov 1990 | -19.4°C12 Nov 1985 | 128 mm23 Nov 2024 | 475 mm1973 · driest 0 mm in 1936 | 122 |
| December | 24.4°C14 Dec 1921 | -31.1°C12 Dec 1972 | 229 mm31 Dec 2004 | 630 mm1955 · driest 3 mm in 1976 | 118 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 24 | 5 | 3 |
| February | <1 | 0 | 21 | 5 | 2 |
| March | <1 | 0 | 20 | 5 | 2 |
| April | 4 | <1 | 13 | 3 | <1 |
| May | 12 | 4 | 3 | 1 | 0 |
| June | 22 | 12 | <1 | <1 | 0 |
| July | 29 | 24 | 0 | <1 | 0 |
| August | 30 | 24 | 0 | <1 | 0 |
| September | 24 | 15 | 1 | <1 | 0 |
| October | 9 | 2 | 13 | 2 | <1 |
| November | <1 | 0 | 19 | 3 | <1 |
| December | 0 | 0 | 23 | 5 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 33% | 18% | 40% | 4.5–11.0°C |
| February | 4% | 33% | 17% | 40% | 7.2–14.7°C |
| March | 18% | 33% | 15% | 37% | 9.9–17.7°C |
| April | 41% | 22% | 8% | 21% | 14.7–21.2°C |
| May | 66% | 17% | 5% | 17% | 19.0–25.9°C |
| June | 87% | 9% | 2% | 5% | 25.1–30.7°C |
| July | 98% | 2% | <1% | <1% | 29.5–34.3°C |
| August | 97% | 3% | <1% | 1% | 29.0–33.9°C |
| September | 88% | 7% | 2% | 6% | 24.5–31.2°C |
| October | 62% | 14% | 6% | 13% | 18.1–25.8°C |
| November | 10% | 24% | 12% | 31% | 10.1–17.0°C |
| December | <1% | 31% | 16% | 37% | 5.0–10.8°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 5573042
- NOAA station
- USC00047195 · QUINCY
- Station distance
- 14.1 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 27 usable years
- Daylight
- Calculated from latitude 40.02°, 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.