July is one of the warmer months of the year in Williams Lake, with average highs near 23.4°C and lows around 9.3°C (mean 16.4°C). It is about average for rainfall, averaging 56 mm of rainfall and 63% relative humidity across the period.
July is one of the warmer months of the year in Williams Lake. Across 45 years of records, the warmest July in Williams Lake was 2024 — when the month averaged 19.5°C — while the coldest was 2011 at 12.9°C. Typical July days reach 23.4°C with nights near 9.3°C. The long-term trend is warming, about 0.4°C per decade.
July is about average for rainfall in Williams Lake, averaging 56 mm of rainfall. The wettest July on record was 1982 with 136 mm, while the driest was 1985 at 10 mm.
Relative humidity in Williams Lake during July averages 63%. The most humid July was 2020 at 77%, and the least humid was 1985 at 48%.
July receives about 6.1 kWh/m²/day of solar energy in Williams Lake. The sunniest July was 1985 at 7.2 kWh/m²/day, and the cloudiest was 2011 at 4.8.
Average wind speed in Williams Lake during July is 0.1 m/s. The windiest Julys were 2023, 2024 and 2025, among others at 0.1 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.8°C | 15.9°C | 16.6°C | 16.4°C | 17.6°C | +1.8°C |
| Avg High | 23.2°C | 22.8°C | 23.7°C | 23.3°C | 24.6°C | +1.4°C |
| Avg Low | 8.5°C | 9.0°C | 9.5°C | 9.4°C | 10.5°C | +2°C |
| Avg Rain | 54 mm | 68 mm | 53 mm | 52 mm | 50 mm | -4 mm |
July temperatures in Williams Lake have risen by about 2.2°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 2.2°C (2009) to a record high of 36.2°C (2024).
Rainfall in July is about average for rainfall, averaging 56 mm, with a wettest year of 136 mm.
One of the best times to visit Williams Lake
July is one of the best times to visit Williams Lake. Expect days averaging 23.4°C and nights around 9.3°C (mean 16.4°C) — warmer than Williams Lake's yearly average — with moderate rainfall (56 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 23.4°C | 16.8°C | 10.1°C | 32.5°C | 6.1°C | 64 mm | 67% | 0.1 m/s | 5.9 |
| 2024 🔥 | 27.8°C | 19.5°C | 11.2°C | 36.2°C | 6.6°C | 38 mm | 54% | 0.1 m/s | 6.6 |
| 2023 | 25.1°C | 17.9°C | 10.6°C | 33.0°C | 3.3°C | 30 mm | 60% | 0.1 m/s | 5.9 |
| 2022 | 24.5°C | 17.5°C | 10.6°C | 33.8°C | 7.7°C | 32 mm | 68% | 0.1 m/s | 6.2 |
| 2021 | 26.2°C | 19.0°C | 11.8°C | 31.3°C | 7.1°C | 12 mm | 60% | 0.1 m/s | 6.5 |
| 2020 | 20.4°C | 14.7°C | 8.9°C | 29.4°C | 4.2°C | 128 mm | 77% | 0.1 m/s | 5.4 |
| 2019 | 21.1°C | 15.2°C | 9.2°C | 28.3°C | 5.4°C | 91 mm | 72% | 0.1 m/s | 5.1 |
| 2018 | 25.2°C | 17.5°C | 9.7°C | 34.5°C | 5.1°C | 30 mm | 59% | 0.1 m/s | 6.2 |
| 2017 | 24.0°C | 16.4°C | 8.8°C | 30.6°C | 3.9°C | 11 mm | 60% | 0.1 m/s | 6.3 |
| 2016 | 21.2°C | 15.6°C | 9.9°C | 28.1°C | 5.7°C | 64 mm | 70% | 0.1 m/s | 5.2 |
| 2015 | 25.0°C | 17.7°C | 10.4°C | 33.1°C | 4.8°C | 37 mm | 58% | 0.1 m/s | 6.6 |
| 2014 | 25.2°C | 17.6°C | 10.0°C | 33.3°C | 6.1°C | 56 mm | 61% | 0.1 m/s | 6.6 |
| 2013 | 24.1°C | 16.6°C | 9.2°C | 31.0°C | 3.7°C | 25 mm | 60% | 0.1 m/s | 6.5 |
| 2012 | 24.2°C | 17.4°C | 10.5°C | 30.3°C | 5.5°C | 74 mm | 65% | 0.1 m/s | 6.3 |
| 2011 ❄️ | 18.5°C | 12.9°C | 7.2°C | 23.1°C | 3.2°C | 107 mm | 75% | 0.1 m/s | 4.8 |
| 2010 | 24.9°C | 16.9°C | 9.0°C | 31.8°C | 3.4°C | 23 mm | 54% | 0.1 m/s | 6.7 |
| 2009 | 25.7°C | 18.1°C | 10.5°C | 33.3°C | 2.2°C | 50 mm | 62% | 0.1 m/s | 6.7 |
| 2008 | 23.1°C | 16.0°C | 8.9°C | 30.0°C | 4.0°C | 43 mm | 60% | 0.1 m/s | 5.9 |
| 2007 | 24.7°C | 17.6°C | 10.4°C | 33.8°C | 5.5°C | 38 mm | 60% | 0.1 m/s | 6.1 |
| 2006 | 25.0°C | 17.8°C | 10.6°C | 34.7°C | 5.8°C | 46 mm | 59% | 0.1 m/s | 5.9 |
| 2005 | 21.0°C | 14.7°C | 8.3°C | 26.8°C | 5.0°C | 57 mm | 68% | 0.1 m/s | 5.5 |
| 2004 | 25.8°C | 18.0°C | 10.2°C | 33.5°C | 6.4°C | 25 mm | 57% | 0.1 m/s | 6.3 |
| 2003 | 25.9°C | 17.7°C | 9.5°C | 34.5°C | 5.0°C | 14 mm | 51% | 0.1 m/s | 6.4 |
| 2002 | 24.4°C | 16.8°C | 9.2°C | 32.7°C | 3.9°C | 24 mm | 55% | 0.1 m/s | 6 |
| 2001 | 21.2°C | 14.9°C | 8.6°C | 28.9°C | 4.9°C | 98 mm | 69% | 0.1 m/s | 5.6 |
| 2000 | 20.3°C | 14.5°C | 8.8°C | 28.9°C | 3.8°C | 133 mm | 74% | 0.1 m/s | 5.8 |
| 1999 | 19.2°C | 13.3°C | 7.3°C | 25.0°C | 3.4°C | 103 mm | 76% | 0.1 m/s | 5.9 |
| 1998 | 24.8°C | 18.3°C | 11.8°C | 34.7°C | 3.9°C | 92 mm | 65% | 0.1 m/s | 6.2 |
| 1997 | 20.9°C | 14.8°C | 8.6°C | 28.9°C | 4.3°C | 105 mm | 71% | 0.1 m/s | 6 |
| 1996 | 23.1°C | 15.6°C | 8.0°C | 32.3°C | 2.7°C | 45 mm | 64% | 0.1 m/s | 6.5 |
| 1995 | 22.3°C | 15.6°C | 8.8°C | 30.0°C | 3.9°C | 84 mm | 64% | 0.1 m/s | 5.7 |
| 1994 | 25.4°C | 17.6°C | 9.8°C | 35.4°C | 4.4°C | 44 mm | 59% | 0.1 m/s | 6 |
| 1993 | 19.8°C | 13.7°C | 7.6°C | 24.8°C | 5.3°C | 46 mm | 66% | 0.1 m/s | 5.3 |
| 1992 | 25.0°C | 17.4°C | 9.8°C | 33.2°C | 6.6°C | 33 mm | 53% | 0.1 m/s | 6.3 |
| 1991 | 22.9°C | 15.6°C | 8.3°C | 31.4°C | 4.9°C | 47 mm | 60% | 0.1 m/s | 6.2 |
| 1990 | 24.3°C | 17.1°C | 10.0°C | 31.3°C | 5.5°C | 78 mm | 64% | 0.1 m/s | 6.5 |
| 1989 | 24.3°C | 16.3°C | 8.2°C | 31.8°C | 4.1°C | 40 mm | 56% | 0.1 m/s | 6.6 |
| 1988 | 23.7°C | 16.1°C | 8.5°C | 33.1°C | 4.4°C | 30 mm | 52% | 0.1 m/s | 5.5 |
| 1987 | 23.5°C | 16.5°C | 9.4°C | 31.3°C | 5.3°C | 65 mm | 58% | 0.1 m/s | 5.8 |
| 1986 | 20.2°C | 13.9°C | 7.7°C | 27.3°C | 3.5°C | 73 mm | 65% | 0.1 m/s | 5.5 |
| 1985 | 27.2°C | 18.3°C | 9.5°C | 33.5°C | 2.9°C | 10 mm | 48% | 0.1 m/s | 7.2 |
| 1984 | 24.2°C | 16.0°C | 7.7°C | 33.4°C | 3.3°C | 27 mm | 57% | 0.1 m/s | 6.5 |
| 1983 | 21.7°C | 14.5°C | 7.4°C | 31.5°C | 2.7°C | 54 mm | 64% | 0.1 m/s | — |
| 1982 🌧️ | 20.8°C | 14.7°C | 8.7°C | 29.9°C | 3.8°C | 136 mm | 72% | 0.1 m/s | — |
| 1981 | 22.9°C | 16.1°C | 9.3°C | 28.2°C | 3.9°C | 54 mm | 64% | 0.1 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 23.4°C with lows near 9.3°C (mean 16.4°C), based on 45 years of NASA POWER data.
July averages 56 mm of rainfall in Williams Lake, about average for rainfall. The wettest on record was 136 mm in 1982.
The hottest July reached 36.2°C in 2024. The coldest dipped to 2.2°C in 2009.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 2.2°C. Daytime highs moved from 23.4°C to 25.4°C and overnight lows from 8.5°C to 10.9°C over the same span.
July is one of the warmer months of the year in Williams Lake and about average for rainfall, so plan for around 23.4°C daytime highs and 9.3°C at night.
Not quite — July is the 12th coolest month in Williams Lake, averaging 16.4°C.
For July in Williams Lake, pack light layers you can adjust through the day, with typical highs of 23.4°C and lows of 9.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 63% — moderately humid.
Average wind speed in July is 0.1 m/s. The windiest July on record averaged 0.1 m/s (1981).
The wettest July on record was 1982 with 136 mm. On average, July sees 56 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Williams Lake behaves each July, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for July specifically, along with year-by-year records and how the month has changed over the decades.
