June
June · September · August
81climate match
United States · 1991–2020
Best time to visit
Hamilton.
June leads for comfortable weather in Hamilton: typically 23.7°C by day, 7.5°C at night, with 41 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortJune
Typical high23.7°C
Typical low7.5°C
Rain in June41 mm
July
July · August · June
66climate match
May
May · September · June
82climate match
The weakest month is January, scoring 5 against June’s 81 — days reach only 2.9°C, 21° 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
52.9° / -7°
Feb
55.2° / -6.2°
Mar
1910.4° / -3.2°
Apr
3914.5° / 0°
May
6119.7° / 3.9°
Jun
8123.7° / 7.5°
Jul
7129.6° / 10.2°
Aug
7229° / 9.3°
Sep
7823.2° / 5.2°
Oct
4014.8° / -0.1°
Nov
56.9° / -4.4°
Dec
52° / -7.2°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 2.9°C | -7°C | 24 mm | 5.9 | 8 h 59 | 5 | Strong coverage |
| February | 5.2°C | -6.2°C | 25 mm | 6.1 | 10 h 15 | 5 | Strong coverage |
| March | 10.4°C | -3.2°C | 26 mm | 6.4 | 11 h 45 | 19 | Strong coverage |
| April | 14.5°C | 0°C | 28 mm | 5.7 | 13 h 29 | 39 | Strong coverage |
| May | 19.7°C | 3.9°C | 40 mm | 7.4 | 14 h 57 | 61 | Strong coverage |
| June | 23.7°C | 7.5°C | 41 mm | 7.6 | 15 h 46 | 81 | Strong coverage |
| July | 29.6°C | 10.2°C | 25 mm | 4.8 | 15 h 26 | 71 | Strong coverage |
| August | 29°C | 9.3°C | 20 mm | 4.3 | 14 h 10 | 72 | Strong coverage |
| September | 23.2°C | 5.2°C | 20 mm | 4.5 | 12 h 29 | 78 | Strong coverage |
| October | 14.8°C | -0.1°C | 25 mm | 5.6 | 10 h 49 | 40 | Strong coverage |
| November | 6.9°C | -4.4°C | 37 mm | 6.5 | 9 h 21 | 5 | Strong coverage |
| December | 2°C | -7.2°C | 32 mm | 6.7 | 8 h 38 | 5 | Strong coverage |
What has changed
Hamilton runs +0.3°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
+1.4
Feb
-1.5
Mar
0.0
Apr
-0.9
May
0.0
Jun
+0.1
Jul
+1.4
Aug
+1.1
Sep
+1.3
Oct
-0.7
Nov
0.0
Dec
+0.9
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 18.3°C26 Jan 2015 | -37.8°C21 Jan 1937 | 28 mm15 Jan 1974 | 90 mm1974 · driest 0 mm in 1922 | 117 |
| February | 21.7°C1 Feb 1934 | -39.4°C4 Feb 1899 | 28 mm25 Feb 1917 | 99 mm2014 · driest 0 mm in 1935 | 116 |
| March | 27.8°C18 Mar 1941 | -25.6°C4 Mar 2019 | 19 mm5 Mar 1951 | 79 mm2014 · driest 0 mm in 1916 | 116 |
| April | 32.2°C18 Apr 1936 | -17.2°C1 Apr 1936 | 34 mm10 Apr 1996 | 86 mm1912 · driest 0 mm in 1922 | 116 |
| May | 38.9°C30 May 1936 | -7.8°C6 May 1903 | 57 mm15 May 1952 | 119 mm1980 · driest 0 mm in 1924 | 117 |
| June | 38.9°C29 Jun 2015 | -4.4°C6 Jun 1924 | 49 mm25 Jun 1965 | 111 mm1907 · driest 0 mm in 1924 | 117 |
| July | 40.6°C23 Jul 1895 | -0.6°C7 Jul 1971 | 38 mm14 Jul 2011 | 64 mm1998 · driest 0 mm in 1924 | 117 |
| August | 39.4°C24 Aug 1969 | -7.2°C18 Aug 1895 | 44 mm20 Aug 1974 | 94 mm1922 · driest 0 mm in 1924 | 117 |
| September | 36.7°C2 Sep 1998 | -12.2°C7 Sep 1895 | 43 mm6 Sep 1911 | 85 mm1910 · driest 0 mm in 2012 | 116 |
| October | 32.2°C1 Oct 1901 | -20.6°C25 Oct 2020 | 30 mm11 Oct 1911 | 95 mm1975 · driest 0 mm in 1921 | 114 |
| November | 24.4°C12 Nov 1999 | -31.1°C16 Nov 1955 | 39 mm20 Nov 1962 | 81 mm1962 · driest 0 mm in 1917 | 114 |
| December | 18.9°C9 Dec 1957 | -35.0°C17 Dec 1964 | 40 mm22 Dec 1964 | 141 mm1964 · driest 0 mm in 1935 | 115 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 28 | <1 | 3 |
| February | 0 | 0 | 26 | <1 | 2 |
| March | 0 | 0 | 26 | <1 | 1 |
| April | 1 | 0 | 16 | <1 | <1 |
| May | 6 | 1 | 5 | 1 | <1 |
| June | 13 | 4 | <1 | <1 | 0 |
| July | 26 | 17 | 0 | <1 | 0 |
| August | 26 | 15 | 0 | <1 | 0 |
| September | 13 | 3 | 2 | <1 | 0 |
| October | 2 | 0 | 16 | <1 | <1 |
| November | 0 | 0 | 25 | 1 | 2 |
| December | 0 | 0 | 28 | <1 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 19% | 2% | 19% | -1.9–5.4°C |
| February | <1% | 18% | 1% | 17% | 1.3–8.1°C |
| March | 4% | 17% | <1% | 12% | 6.4–13.2°C |
| April | 20% | 16% | 2% | 12% | 12.2–18.2°C |
| May | 45% | 22% | 3% | 25% | 17.1–22.8°C |
| June | 65% | 24% | 4% | 26% | 21.3–27.0°C |
| July | 86% | 13% | 2% | 9% | 27.0–31.8°C |
| August | 84% | 14% | 2% | 11% | 25.7–31.1°C |
| September | 65% | 16% | 3% | 14% | 19.5–26.0°C |
| October | 23% | 15% | 2% | 14% | 12.6–18.1°C |
| November | <1% | 19% | 2% | 19% | 4.6–10.5°C |
| December | 0% | 18% | 1% | 18% | -0.8–5.6°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 5655959
- NOAA station
- USC00243885 · HAMILTON
- Station distance
- 0.6 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 26 usable years
- Daylight
- Calculated from latitude 46.25°, 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.