June
June · September · August
Canada · 1991–2020
June leads for comfortable weather in Castlegar: typically 23.8°C by day, 10°C at night, with 74 mm of rain. Based on measured 1991–2020 NOAA station history.
June · September · August
August · July · September
September · May · June
The weakest month is January, scoring 5 against June’s 79 — days reach only 0.5°C, 23° below the 24°C the score treats as ideal.
Month by month
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 0.5°C | -3.8°C | 79 mm | 12.5 | 8 h 36 | 5 | Strong coverage |
| February | 3.5°C | -3.5°C | 48 mm | 9.7 | 10 h 02 | 5 | Strong coverage |
| March | 9.1°C | -0.9°C | 69 mm | 10.7 | 11 h 43 | 11 | Strong coverage |
| April | 15°C | 2.2°C | 56 mm | 10 | 13 h 39 | 38 | Strong coverage |
| May | 20.6°C | 6.6°C | 67 mm | 10.6 | 15 h 18 | 62 | Strong coverage |
| June | 23.8°C | 10°C | 74 mm | 10 | 16 h 13 | 79 | Strong coverage |
| July | 29.2°C | 12.5°C | 39 mm | 5.8 | 15 h 51 | 75 | Strong coverage |
| August | 29.1°C | 11.9°C | 22 mm | 4 | 14 h 24 | 77 | Strong coverage |
| September | 22.5°C | 8°C | 37 mm | 5.9 | 12 h 32 | 79 | Strong coverage |
| October | 12.9°C | 3.2°C | 59 mm | 9 | 10 h 41 | 33 | Strong coverage |
| November | 5°C | -0.4°C | 88 mm | 12.8 | 9 h 02 | 5 | Strong coverage |
| December | 0.4°C | -3.7°C | 94 mm | 13.2 | 8 h 12 | 5 | Strong coverage |
What has changed
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.
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 10.0°C16 Jan 1974 | -26.2°C13 Jan 2024 | 32 mm10 Jan 1969 | 168 mm2006 · driest 9 mm in 1985 | 59 |
| February | 14.3°C21 Feb 1988 | -21.5°C5 Feb 2014 | 31 mm25 Feb 1979 | 163 mm1979 · driest 8 mm in 2005 | 59 |
| March | 23.1°C30 Mar 2004 | -18.0°C3 Mar 2019 | 34 mm22 Mar 1993 | 146 mm2012 · driest 13 mm in 2021 | 58 |
| April | 28.5°C29 Apr 2023 | -7.5°C1 Apr 1979 | 32 mm16 Apr 1992 | 105 mm1996 · driest 13 mm in 1977 | 58 |
| May | 34.5°C18 May 2006 | -4.7°C1 May 2013 | 52 mm21 May 2013 | 157 mm1996 · driest 17 mm in 1970 | 58 |
| June | 44.0°C30 Jun 2021 | 1.6°C11 Jun 2008 | 46 mm19 Jun 2013 | 228 mm2012 · driest 13 mm in 1974 | 58 |
| July | 42.0°C1 Jul 2021 | 4.1°C3 Jul 1979 | 68 mm17 Jul 2012 | 143 mm1998 · driest 0 mm in 1985 | 58 |
| August | 41.2°C15 Aug 2023 | 2.5°C25 Aug 1992 | 43 mm24 Aug 1977 | 140 mm1976 · driest 0 mm in 1967 | 58 |
| September | 37.0°C2 Sep 2022 | -4.3°C28 Sep 1984 | 29 mm23 Sep 1986 | 123 mm1997 · driest 2 mm in 1990 | 58 |
| October | 27.2°C7 Oct 1980 | -11.3°C31 Oct 2002 | 52 mm13 Oct 2016 | 210 mm2016 · driest 2 mm in 2002 | 58 |
| November | 19.4°C4 Nov 1975 | -20.2°C21 Nov 1977 | 38 mm1 Nov 1984 | 187 mm1973 · driest 14 mm in 1979 | 58 |
| December | 14.5°C1 Dec 2021 | -30.6°C30 Dec 1968 | 42 mm12 Dec 1998 | 195 mm1996 · driest 20 mm in 1985 | 59 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 23 | 2 | 13 |
| February | 0 | 0 | 21 | 1 | 8 |
| March | 0 | 0 | 18 | 2 | 6 |
| April | <1 | 0 | 8 | 1 | 1 |
| May | 7 | 2 | 1 | 2 | <1 |
| June | 12 | 4 | 0 | 2 | 0 |
| July | 25 | 15 | 0 | 1 | 0 |
| August | 24 | 15 | 0 | <1 | 0 |
| September | 9 | 2 | <1 | 1 | 0 |
| October | <1 | 0 | 7 | 2 | <1 |
| November | 0 | 0 | 15 | 3 | 7 |
| December | 0 | 0 | 26 | 3 | 15 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 39% | 7% | 51% | -2.2–2.3°C |
| February | 0% | 35% | 5% | 46% | 0.6–5.1°C |
| March | <1% | 33% | 6% | 44% | 7.0–11.3°C |
| April | 14% | 31% | 5% | 38% | 13.1–16.8°C |
| May | 44% | 33% | 6% | 42% | 17.4–22.9°C |
| June | 60% | 33% | 7% | 43% | 21.4–26.6°C |
| July | 80% | 19% | 4% | 16% | 26.1–32.0°C |
| August | 82% | 17% | 3% | 18% | 25.0–31.0°C |
| September | 59% | 21% | 4% | 24% | 18.8–24.8°C |
| October | 7% | 29% | 5% | 39% | 11.5–15.0°C |
| November | 0% | 43% | 10% | 60% | 2.7–6.6°C |
| December | 0% | 43% | 10% | 59% | -2.2–2.2°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