July is one of the warmer months of the year in Missoula, with average highs near 25.1°C and lows around 9.8°C (mean 17.5°C). It is one of the drier months, averaging 35 mm of rainfall and 58% relative humidity across the period.
July is one of the warmer months of the year in Missoula. Across 45 years of records, the warmest July in Missoula was 2021 — when the month averaged 22.1°C — while the coldest was 1993 at 11.2°C. Typical July days reach 25.1°C with nights near 9.8°C. The long-term trend is warming, about 0.7°C per decade.
July is one of the drier months in Missoula, averaging 35 mm of rainfall. The wettest July on record was 1993 with 87 mm, while the driest was 1985 at 3 mm.
Relative humidity in Missoula during July averages 58%. The most humid July was 1993 at 75%, and the least humid was 1985 at 41%.
July receives about 7.2 kWh/m²/day of solar energy in Missoula. The sunniest Julys were 2013 and 2017 at 8 kWh/m²/day, and the cloudiest was 1993 at 5.2.
Average wind speed in Missoula during July is 0.3 m/s. The windiest Julys were 2022, 2023 and 2024, among others at 0.3 m/s, while the calmest were 2009, 2012 and 2025, among others at 0.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.7°C | 16.0°C | 18.4°C | 17.5°C | 19.3°C | +2.6°C |
| Avg High | 24.5°C | 23.2°C | 26.3°C | 25.0°C | 27.0°C | +2.5°C |
| Avg Low | 8.8°C | 8.7°C | 10.6°C | 10.1°C | 11.6°C | +2.8°C |
| Avg Rain | 40 mm | 48 mm | 28 mm | 27 mm | 29 mm | -11 mm |
July temperatures in Missoula have risen by about 3.3°C between 1981–1985 and 2021–2025.
July has ranged from a record low of -1.4°C (1981) to a record high of 39°C (2002).
Rainfall in July is one of the drier months, averaging 35 mm, with a wettest year of 87 mm.
One of the best times to visit Missoula
July is one of the best times to visit Missoula. Expect days averaging 25.1°C and nights around 9.8°C (mean 17.5°C) — warmer than Missoula's yearly average — with moderate rainfall (35 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 | 26.3°C | 18.8°C | 11.4°C | 32.8°C | 7.0°C | 43 mm | 53% | 0.2 m/s | 7 |
| 2024 | 28.3°C | 20.4°C | 12.5°C | 35.4°C | 6.8°C | 39 mm | 49% | 0.3 m/s | 7.4 |
| 2023 | 27.2°C | 19.2°C | 11.2°C | 33.9°C | 4.4°C | 9 mm | 51% | 0.3 m/s | 7.8 |
| 2022 | 27.3°C | 19.6°C | 11.9°C | 34.1°C | 6.4°C | 42 mm | 59% | 0.3 m/s | 7.5 |
| 2021 🔥 | 30.4°C | 22.1°C | 13.8°C | 34.6°C | 9.0°C | 17 mm | 46% | 0.3 m/s | 7.3 |
| 2020 | 22.5°C | 15.5°C | 8.5°C | 33.3°C | 2.5°C | 22 mm | 66% | 0.3 m/s | 7.4 |
| 2019 | 24.4°C | 17.0°C | 9.5°C | 33.8°C | 3.6°C | 40 mm | 61% | 0.3 m/s | 7 |
| 2018 | 24.2°C | 17.0°C | 9.9°C | 30.9°C | 3.0°C | 8 mm | 61% | 0.3 m/s | 7.7 |
| 2017 | 27.8°C | 20.2°C | 12.7°C | 33.7°C | 7.7°C | 13 mm | 55% | 0.3 m/s | 8 |
| 2016 | 23.3°C | 16.0°C | 8.8°C | 29.8°C | 1.9°C | 52 mm | 60% | 0.3 m/s | 7 |
| 2015 | 25.1°C | 17.8°C | 10.4°C | 31.6°C | 4.5°C | 46 mm | 54% | 0.3 m/s | 7 |
| 2014 | 25.7°C | 18.2°C | 10.8°C | 31.8°C | 4.1°C | 14 mm | 62% | 0.3 m/s | 7.5 |
| 2013 | 27.3°C | 19.1°C | 10.9°C | 31.9°C | 5.8°C | 8 mm | 51% | 0.3 m/s | 8 |
| 2012 | 26.5°C | 18.9°C | 11.3°C | 33.0°C | 2.0°C | 27 mm | 62% | 0.2 m/s | 7.2 |
| 2011 | 22.6°C | 15.5°C | 8.4°C | 29.9°C | 1.9°C | 35 mm | 68% | 0.3 m/s | 7.5 |
| 2010 | 22.7°C | 15.5°C | 8.4°C | 30.2°C | 2.0°C | 26 mm | 63% | 0.3 m/s | 7.3 |
| 2009 | 24.1°C | 16.8°C | 9.5°C | 33.0°C | 2.3°C | 54 mm | 59% | 0.2 m/s | 7.2 |
| 2008 | 24.1°C | 16.6°C | 9.1°C | 31.2°C | 3.0°C | 27 mm | 60% | 0.3 m/s | 7.5 |
| 2007 | 30.5°C | 21.8°C | 13.1°C | 36.6°C | 7.9°C | 13 mm | 49% | 0.2 m/s | 7.7 |
| 2006 | 27.8°C | 19.6°C | 11.3°C | 35.5°C | 3.4°C | 22 mm | 51% | 0.3 m/s | 7.8 |
| 2005 | 25.2°C | 17.4°C | 9.7°C | 31.7°C | 4.7°C | 11 mm | 56% | 0.3 m/s | 7.6 |
| 2004 | 25.5°C | 17.7°C | 10.0°C | 34.6°C | 1.0°C | 33 mm | 58% | 0.3 m/s | 7.4 |
| 2003 | 28.1°C | 20.1°C | 12.0°C | 33.9°C | 5.4°C | 10 mm | 47% | 0.3 m/s | 7.9 |
| 2002 | 26.4°C | 18.6°C | 10.8°C | 39.0°C | 4.2°C | 25 mm | 58% | 0.2 m/s | 7.4 |
| 2001 | 24.8°C | 17.3°C | 9.9°C | 32.9°C | 4.2°C | 56 mm | 56% | 0.3 m/s | 6.5 |
| 2000 | 26.1°C | 18.1°C | 10.2°C | 35.7°C | 3.3°C | 28 mm | 52% | 0.3 m/s | 7.2 |
| 1999 | 23.1°C | 15.0°C | 7.0°C | 31.9°C | -0.1°C | 23 mm | 56% | 0.3 m/s | 7.4 |
| 1998 | 25.8°C | 18.8°C | 11.8°C | 32.3°C | 6.6°C | 71 mm | 65% | 0.3 m/s | 7.2 |
| 1997 | 21.4°C | 15.0°C | 8.5°C | 29.0°C | 2.2°C | 62 mm | 72% | 0.3 m/s | 7 |
| 1996 | 24.2°C | 16.8°C | 9.3°C | 30.9°C | 4.1°C | 42 mm | 63% | 0.3 m/s | 7.7 |
| 1995 | 22.5°C | 15.6°C | 8.7°C | 29.1°C | 4.5°C | 69 mm | 66% | 0.2 m/s | 6.6 |
| 1994 | 26.3°C | 18.3°C | 10.4°C | 33.8°C | 1.1°C | 21 mm | 51% | 0.3 m/s | 7.2 |
| 1993 ❄️ 🌧️ | 17.1°C | 11.2°C | 5.3°C | 28.6°C | 2.3°C | 87 mm | 75% | 0.2 m/s | 5.2 |
| 1992 | 21.7°C | 14.6°C | 7.5°C | 29.9°C | 2.3°C | 50 mm | 62% | 0.2 m/s | 6.3 |
| 1991 | 24.5°C | 16.8°C | 9.2°C | 32.6°C | 3.5°C | 19 mm | 60% | 0.3 m/s | 7.6 |
| 1990 | 25.8°C | 17.5°C | 9.2°C | 33.9°C | 4.2°C | 38 mm | 57% | 0.2 m/s | 7 |
| 1989 | 27.5°C | 18.8°C | 10.2°C | 35.9°C | 5.6°C | 55 mm | 57% | 0.2 m/s | 7.2 |
| 1988 | 25.8°C | 17.7°C | 9.5°C | 33.4°C | 2.5°C | 16 mm | 50% | 0.3 m/s | 7.1 |
| 1987 | 23.6°C | 16.0°C | 8.4°C | 32.9°C | 2.3°C | 78 mm | 60% | 0.2 m/s | 5.9 |
| 1986 | 21.3°C | 13.9°C | 6.6°C | 29.3°C | 2.4°C | 35 mm | 57% | 0.3 m/s | 6.7 |
| 1985 | 29.1°C | 20.6°C | 12.1°C | 34.3°C | 6.9°C | 3 mm | 41% | 0.3 m/s | 7.7 |
| 1984 | 25.5°C | 17.6°C | 9.7°C | 34.0°C | 3.7°C | 23 mm | 56% | 0.3 m/s | 7.5 |
| 1983 | 22.6°C | 14.8°C | 7.1°C | 32.7°C | 0.9°C | 82 mm | 67% | 0.2 m/s | — |
| 1982 | 22.3°C | 15.3°C | 8.2°C | 29.5°C | 1.8°C | 40 mm | 63% | 0.3 m/s | — |
| 1981 | 23.2°C | 15.3°C | 7.4°C | 30.2°C | -1.4°C | 30 mm | 60% | 0.3 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 25.1°C with lows near 9.8°C (mean 17.5°C), based on 45 years of NASA POWER data.
July averages 35 mm of rainfall in Missoula, one of the drier months. The wettest on record was 87 mm in 1993.
The hottest July reached 39°C in 2002. The coldest dipped to -1.4°C in 1981.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 3.3°C. Daytime highs moved from 24.5°C to 27.9°C and overnight lows from 8.9°C to 12.2°C over the same span.
July is one of the warmer months of the year in Missoula and one of the drier months, so plan for around 25.1°C daytime highs and 9.8°C at night.
Not quite — July is the 11th coolest month in Missoula, averaging 17.5°C.
For July in Missoula, pack light layers you can adjust through the day, with typical highs of 25.1°C and lows of 9.8°C.
Relative humidity in July averages 58% — moderately humid.
Average wind speed in July is 0.3 m/s. The windiest July on record averaged 0.3 m/s (1981).
The wettest July on record was 1993 with 87 mm. On average, July sees 35 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 Missoula 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.
