July
July · August · June
Canada · 1991–2020
July leads for comfortable weather in Lethbridge: typically 22.7°C by day, 11.1°C at night, with 100 mm of rain. Based on measured 1991–2020 NOAA station history.
July · August · June
August · July · January
July · August · June
The weakest month is January, scoring 5 against July’s 70 — days reach only -0.9°C, 25° 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 | Sea | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|---|
| January | -0.9°C | -10°C | 105 mm | 13.9 | 1.2°C | 8 h 44 | 5 | Strong coverage |
| February | -0.7°C | -10.2°C | 95 mm | 12.9 | 0.2°C | 10 h 07 | 5 | Strong coverage |
| March | 2.1°C | -6.8°C | 97 mm | 13.2 | 0.0°C | 11 h 44 | 5 | Strong coverage |
| April | 7°C | -1.6°C | 94 mm | 13.8 | 0.7°C | 13 h 35 | 5 | Strong coverage |
| May | 12.7°C | 2.1°C | 93 mm | 15.2 | 2.7°C | 15 h 11 | 20 | Strong coverage |
| June | 17.7°C | 6.4°C | 86 mm | 14.5 | 6.3°C | 16 h 04 | 46 | Strong coverage |
| July | 22.7°C | 11.1°C | 100 mm | 13.6 | 10.9°C | 15 h 43 | 70 | Strong coverage |
| August | 22.5°C | 11.6°C | 96 mm | 13.9 | 14.0°C | 14 h 20 | 70 | Strong coverage |
| September | 18°C | 7.6°C | 117 mm | 13.8 | 12.5°C | 12 h 31 | 46 | Strong coverage |
| October | 11.9°C | 3.5°C | 124 mm | 16.6 | 9.8°C | 10 h 43 | 15 | Strong coverage |
| November | 6.7°C | -0.8°C | 116 mm | 15.6 | 6.5°C | 9 h 08 | 5 | Strong coverage |
| December | 1.7°C | -5.7°C | 120 mm | 15.1 | 3.1°C | 8 h 20 | 5 | Strong coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 16.0°C15 Jan 2006 | -31.0°C27 Jan 2008 | 49 mm29 Jan 2022 | 192 mm2000 · driest 34 mm in 2009 | 43 |
| February | 15.0°C4 Feb 2013 | -31.0°C5 Feb 1990 | 53 mm19 Feb 1993 | 164 mm1988 · driest 36 mm in 2007 | 44 |
| March | 17.0°C28 Mar 1999 | -30.0°C9 Mar 2007 | 55 mm11 Mar 2024 | 188 mm1994 · driest 42 mm in 2007 | 44 |
| April | 22.0°C28 Apr 1986 | -18.0°C9 Apr 2015 | 62 mm28 Apr 1999 | 211 mm1998 · driest 23 mm in 2007 | 43 |
| May | 33.0°C5 May 1999 | -8.0°C12 May 1993 | 55 mm9 May 2003 | 177 mm2020 · driest 25 mm in 1989 | 43 |
| June | 32.5°C8 Jun 2021 | -4.5°C9 Jun 1999 | 49 mm23 Jun 2009 | 196 mm1988 · driest 34 mm in 2001 | 43 |
| July | 34.0°C9 Jul 1997 | -1.0°C8 Jul 2009 | 76 mm12 Jul 2018 | 187 mm1995 · driest 17 mm in 2008 | 42 |
| August | 34.0°C24 Aug 2008 | -1.5°C6 Aug 2003 | 59 mm30 Aug 2023 | 145 mm2009 · driest 32 mm in 2018 | 41 |
| September | 31.0°C10 Sep 2001 | -5.0°C30 Sep 1986 | 94 mm21 Sep 2010 | 291 mm2010 · driest 23 mm in 2008 | 42 |
| October | 24.5°C1 Oct 2010 | -9.0°C29 Oct 1999 | 70 mm17 Oct 1981 | 243 mm2011 · driest 21 mm in 2017 | 41 |
| November | 20.0°C1 Nov 2019 | -17.0°C21 Nov 1986 | 79 mm22 Nov 2003 | 187 mm2012 · driest 37 mm in 2010 | 43 |
| December | 16.0°C2 Dec 2020 | -25.0°C9 Dec 1991 | 49 mm27 Dec 2010 | 252 mm2010 · driest 32 mm in 1986 | 43 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | 4 | 10 |
| February | 0 | 0 | 26 | 4 | 9 |
| March | 0 | 0 | 28 | 4 | 7 |
| April | 0 | 0 | 21 | 3 | 3 |
| May | <1 | <1 | 10 | 3 | <1 |
| June | 3 | <1 | 3 | 3 | 0 |
| July | 12 | 1 | <1 | 4 | 0 |
| August | 10 | <1 | <1 | 3 | 0 |
| September | 2 | <1 | 3 | 3 | 0 |
| October | 0 | 0 | 9 | 4 | <1 |
| November | 0 | 0 | 18 | 4 | 2 |
| December | 0 | 0 | 26 | 5 | 7 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 44% | 14% | 65% | -2.8–1.6°C |
| February | 0% | 43% | 13% | 67% | -2.9–1.9°C |
| March | 0% | 41% | 13% | 58% | 0.3–3.7°C |
| April | <1% | 43% | 11% | 63% | 4.8–9.4°C |
| May | 9% | 47% | 9% | 67% | 11.0–15.1°C |
| June | 25% | 47% | 10% | 67% | 15.2–19.6°C |
| July | 49% | 41% | 11% | 59% | 20.7–24.6°C |
| August | 48% | 41% | 10% | 57% | 20.5–24.1°C |
| September | 23% | 45% | 12% | 67% | 15.8–19.4°C |
| October | 2% | 49% | 13% | 71% | 9.6–13.7°C |
| November | 0% | 50% | 15% | 72% | 4.9–8.3°C |
| December | 0% | 48% | 13% | 71% | -0.3–3.5°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