July
July · June · August
78climate match
United States · 1991–2020
Best time to visit
Butte.
July leads for comfortable weather in Butte: typically 20.7°C by day, 11.2°C at night, with 41 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortJuly
Typical high20.7°C
Typical low11.2°C
Rain in July41 mm
July
July · June · August
42climate match
June
June · July · August
96climate match
The weakest month is January, scoring 5 against July’s 78 — days reach only -5.5°C, 29° 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
5-5.5° / -12.6°
Feb
5-0.9° / -9.9°
Mar
52.3° / -7.5°
Apr
2710.3° / -0.5°
May
5916.9° / 5°
Jun
7419.9° / 9.2°
Jul
7820.7° / 11.2°
Aug
6719° / 10.2°
Sep
4114.1° / 5.9°
Oct
116.9° / -1.1°
Nov
5-1.9° / -8.8°
Dec
5-3.4° / -10.6°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | -5.5°C | -12.6°C | 24 mm | 4.1 | 6 h 13 | 5 | Good coverage |
| February | -0.9°C | -9.9°C | 36 mm | 4.3 | 8 h 48 | 5 | Good coverage |
| March | 2.3°C | -7.5°C | 23 mm | 3.7 | 11 h 31 | 5 | Good coverage |
| April | 10.3°C | -0.5°C | 8 mm | 1.8 | 14 h 36 | 27 | Good coverage |
| May | 16.9°C | 5°C | 15 mm | 2.7 | 17 h 29 | 59 | Good coverage |
| June | 19.9°C | 9.2°C | 27 mm | 5.2 | 19 h 27 | 74 | Good coverage |
| July | 20.7°C | 11.2°C | 41 mm | 7.5 | 18 h 37 | 78 | Good coverage |
| August | 19°C | 10.2°C | 56 mm | 8.9 | 15 h 53 | 67 | Good coverage |
| September | 14.1°C | 5.9°C | 67 mm | 9.2 | 12 h 48 | 41 | Good coverage |
| October | 6.9°C | -1.1°C | 38 mm | 6.5 | 9 h 51 | 11 | Good coverage |
| November | -1.9°C | -8.8°C | 38 mm | 5.8 | 7 h 02 | 5 | Good coverage |
| December | -3.4°C | -10.6°C | 32 mm | 6.5 | 5 h 23 | 5 | Good coverage |
What has changed
Butte runs +1.9°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
+2.7
Feb
+2.2
Mar
+1.3
Apr
+2.9
May
+3.0
Jun
+2.4
Jul
+1.5
Aug
+1.0
Sep
+0.3
Oct
+2.3
Nov
+1.3
Dec
+2.4
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 13.9°C27 Jan 2014 | -38.3°C5 Jan 1975 | 36 mm1 Jan 1981 | 88 mm1981 · driest 0 mm in 1974 | 66 |
| February | 12.2°C12 Feb 1980 | -37.2°C2 Feb 2024 | 51 mm18 Feb 2019 | 152 mm2019 · driest 0 mm in 1950 | 65 |
| March | 13.9°C26 Mar 2015 | -31.7°C8 Mar 1971 | 59 mm17 Mar 1995 | 102 mm2011 · driest 0 mm in 1961 | 65 |
| April | 24.4°C29 Apr 2005 | -22.2°C7 Apr 1986 | 31 mm28 Apr 2015 | 62 mm1967 · driest 0 mm in 1969 | 67 |
| May | 31.1°C27 May 2011 | -9.4°C9 May 1964 | 35 mm31 May 1997 | 67 mm1997 · driest 0 mm in 2010 | 63 |
| June | 30.6°C17 Jun 2013 | -1.1°C5 Jun 2021 | 35 mm22 Jun 1957 | 80 mm1962 · driest 0 mm in 2017 | 64 |
| July | 31.1°C8 Jul 2019 | 0.0°C14 Jul 2010 | 50 mm21 Jul 1986 | 110 mm1979 · driest 0 mm in 2018 | 66 |
| August | 29.4°C16 Aug 2004 | -3.3°C30 Aug 1955 | 51 mm20 Aug 2011 | 166 mm2006 · driest 0 mm in 1958 | 67 |
| September | 22.8°C5 Sep 1974 | -9.4°C24 Sep 1992 | 41 mm15 Sep 1980 | 200 mm2015 · driest 7 mm in 1955 | 67 |
| October | 18.9°C2 Oct 1954 | -22.2°C31 Oct 1961 | 48 mm26 Oct 1993 | 99 mm1952 · driest 0 mm in 2024 | 68 |
| November | 15.0°C19 Nov 1949 | -32.2°C29 Nov 1990 | 56 mm19 Nov 1964 | 108 mm2019 · driest 0 mm in 1975 | 68 |
| December | 12.2°C21 Dec 1969 | -38.9°C30 Dec 1961 | 31 mm1 Dec 1976 | 89 mm1976 · driest 0 mm in 1995 | 68 |
| Month | Days 25°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|
| January | 0 | 28 | <1 | 4 |
| February | 0 | 26 | <1 | 5 |
| March | 0 | 27 | <1 | 5 |
| April | 0 | 16 | <1 | 1 |
| May | 1 | 2 | <1 | <1 |
| June | 3 | 0 | <1 | 0 |
| July | 4 | 0 | 1 | 0 |
| August | 1 | 0 | 2 | 0 |
| September | 0 | 2 | 2 | 0 |
| October | 0 | 18 | 1 | 2 |
| November | 0 | 27 | 1 | 7 |
| December | 0 | 28 | <1 | 8 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 14% | 1% | 11% | -10.6–-0.6°C |
| February | 0% | 14% | 2% | 10% | -6.8–2.3°C |
| March | 0% | 11% | 1% | 7% | -3.1–5.5°C |
| April | <1% | 9% | <1% | 4% | 5.3–11.4°C |
| May | 12% | 11% | 1% | 8% | 12.2–18.2°C |
| June | 35% | 20% | 3% | 23% | 16.1–21.6°C |
| July | 44% | 29% | 4% | 38% | 17.8–21.9°C |
| August | 29% | 30% | 5% | 39% | 16.3–20.1°C |
| September | 2% | 31% | 7% | 39% | 12.4–15.3°C |
| October | 0% | 22% | 3% | 24% | 2.6–8.9°C |
| November | 0% | 17% | 2% | 16% | -6.7–2.2°C |
| December | 0% | 19% | 2% | 18% | -10.0–0.5°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 5858289
- NOAA station
- USC00506870 · PALMER JOB CORPS
- Station distance
- 6.3 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 20 usable years
- Daylight
- Calculated from latitude 61.54°, 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.