July is one of the warmer months of the year in Stillwater, with average highs near 34.4°C and lows around 22.5°C (mean 28.5°C). It is about average for rainfall, averaging 83 mm of rainfall and 63% relative humidity across the period.
July is one of the warmer months of the year in Stillwater. Across 45 years of records, the warmest July in Stillwater was 2011 — when the month averaged 34.6°C — while the coldest was 2007 at 25.3°C. Typical July days reach 34.4°C with nights near 22.5°C. The long-term trend is warming, about 0.3°C per decade.
July is about average for rainfall in Stillwater, averaging 83 mm of rainfall. The wettest July on record was 1996 with 157 mm, while the driest was 1983 at 7 mm.
Relative humidity in Stillwater during July averages 63%. The most humid July was 2007 at 83%, and the least humid was 2011 at 37%.
July receives about 6.9 kWh/m²/day of solar energy in Stillwater. The sunniest Julys were 1999 and 2003 at 7.5 kWh/m²/day, and the cloudiest was 1996 at 6.2.
Average wind speed in Stillwater during July is 2.8 m/s. The windiest July was 1986 at 3.9 m/s, while the calmest was 2007 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 27.9°C | 27.9°C | 28.6°C | 29.1°C | 28.8°C | +0.9°C |
| Avg High | 34.0°C | 33.8°C | 34.7°C | 34.8°C | 34.5°C | +0.5°C |
| Avg Low | 21.9°C | 22.1°C | 22.4°C | 23.3°C | 23.1°C | +1.2°C |
| Avg Rain | 58 mm | 86 mm | 86 mm | 91 mm | 95 mm | +37 mm |
July temperatures in Stillwater have risen by about 0.8°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 13.4°C (1995) to a record high of 45.8°C (1996).
Rainfall in July is about average for rainfall, averaging 83 mm, with a wettest year of 157 mm.
A good time to visit Stillwater
July is a good time to visit Stillwater, with days averaging 34.4°C and nights around 22.5°C (mean 28.5°C, warmer than Stillwater's yearly average) and higher rainfall. September and May are marginally more temperate, but July still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 31.8°C | 27.2°C | 22.7°C | 37.2°C | 20.4°C | 82 mm | 78% | 2.7 m/s | 6.8 |
| 2024 | 35.5°C | 29.2°C | 22.8°C | 40.7°C | 18.6°C | 82 mm | 57% | 2.9 m/s | 6.8 |
| 2023 | 34.5°C | 28.5°C | 22.4°C | 40.9°C | 18.3°C | 141 mm | 65% | 2.6 m/s | 6.8 |
| 2022 | 39.4°C | 32.3°C | 25.1°C | 44.9°C | 20.6°C | 60 mm | 47% | 2.9 m/s | 6.8 |
| 2021 | 32.1°C | 27.0°C | 21.8°C | 36.5°C | 17.5°C | 68 mm | 74% | 2.3 m/s | 6.7 |
| 2020 | 33.9°C | 28.8°C | 23.6°C | 37.6°C | 20.4°C | 137 mm | 70% | 2.7 m/s | 6.7 |
| 2019 | 31.5°C | 26.6°C | 21.7°C | 35.2°C | 16.4°C | 36 mm | 77% | 2.6 m/s | 7.4 |
| 2018 | 34.4°C | 28.7°C | 23.1°C | 43.4°C | 17.4°C | 79 mm | 64% | 2.1 m/s | 6.9 |
| 2017 | 35.3°C | 29.2°C | 23.1°C | 41.2°C | 19.3°C | 84 mm | 62% | 2.6 m/s | 7 |
| 2016 | 33.8°C | 28.7°C | 23.7°C | 40.3°C | 21.3°C | 153 mm | 71% | 3 m/s | 6.7 |
| 2015 | 32.5°C | 27.6°C | 22.7°C | 36.0°C | 18.2°C | 152 mm | 77% | 2.8 m/s | 6.5 |
| 2014 | 33.3°C | 26.9°C | 20.5°C | 40.4°C | 14.6°C | 132 mm | 60% | 2.8 m/s | 6.4 |
| 2013 | 32.9°C | 27.1°C | 21.4°C | 40.0°C | 15.3°C | 141 mm | 63% | 2.6 m/s | 6.5 |
| 2012 | 39.8°C | 32.6°C | 25.3°C | 45.6°C | 22.6°C | 11 mm | 40% | 3.1 m/s | 7.3 |
| 2011 🔥 | 41.6°C | 34.6°C | 27.5°C | 44.5°C | 24.8°C | 19 mm | 37% | 2.9 m/s | 7.2 |
| 2010 | 33.3°C | 28.5°C | 23.6°C | 38.9°C | 21.2°C | 107 mm | 71% | 2.8 m/s | 6.6 |
| 2009 | 35.1°C | 28.5°C | 21.9°C | 43.0°C | 17.4°C | 135 mm | 56% | 2.7 m/s | 6.8 |
| 2008 | 33.2°C | 27.5°C | 21.7°C | 38.0°C | 16.1°C | 89 mm | 67% | 2.7 m/s | 6.8 |
| 2007 ❄️ | 29.6°C | 25.3°C | 21.0°C | 32.1°C | 18.1°C | 148 mm | 83% | 1.9 m/s | 6.5 |
| 2006 | 37.2°C | 30.5°C | 23.8°C | 42.6°C | 17.9°C | 69 mm | 48% | 3.3 m/s | 7.1 |
| 2005 | 34.9°C | 28.4°C | 21.8°C | 40.7°C | 15.4°C | 78 mm | 56% | 2.6 m/s | 7.3 |
| 2004 | 31.7°C | 26.2°C | 20.8°C | 38.8°C | 15.5°C | 121 mm | 70% | 2.6 m/s | 6.4 |
| 2003 | 38.2°C | 31.0°C | 23.7°C | 43.0°C | 18.2°C | 11 mm | 45% | 3.1 m/s | 7.5 |
| 2002 | 34.3°C | 28.5°C | 22.7°C | 40.1°C | 19.6°C | 79 mm | 63% | 2.6 m/s | 6.6 |
| 2001 | 38.5°C | 31.8°C | 25.0°C | 43.4°C | 20.7°C | 27 mm | 52% | 3.4 m/s | 7.3 |
| 2000 | 34.1°C | 27.9°C | 21.6°C | 42.0°C | 16.2°C | 100 mm | 63% | 2.9 m/s | 7.1 |
| 1999 | 33.0°C | 27.6°C | 22.1°C | 39.6°C | 14.7°C | 41 mm | 69% | 3.2 m/s | 7.5 |
| 1998 | 37.9°C | 31.5°C | 25.1°C | 42.7°C | 21.3°C | 58 mm | 54% | 2.7 m/s | 7.2 |
| 1997 | 33.6°C | 27.8°C | 22.1°C | 39.2°C | 14.3°C | 147 mm | 67% | 2.6 m/s | 6.9 |
| 1996 🌧️ | 34.9°C | 28.7°C | 22.5°C | 45.8°C | 17.4°C | 157 mm | 59% | 2.6 m/s | 6.2 |
| 1995 | 31.9°C | 26.5°C | 21.1°C | 36.0°C | 13.4°C | 97 mm | 75% | 2.5 m/s | 7.3 |
| 1994 | 34.5°C | 27.9°C | 21.4°C | 39.8°C | 14.1°C | 124 mm | 61% | 2.8 m/s | 6.6 |
| 1993 | 32.3°C | 27.5°C | 22.7°C | 37.0°C | 21.1°C | 51 mm | 75% | 3.3 m/s | 7 |
| 1992 | 31.3°C | 25.9°C | 20.5°C | 33.9°C | 14.1°C | 93 mm | 76% | 3.2 m/s | 7 |
| 1991 | 35.4°C | 28.9°C | 22.5°C | 39.7°C | 18.2°C | 48 mm | 53% | 2.9 m/s | 6.9 |
| 1990 | 33.1°C | 27.1°C | 21.0°C | 37.6°C | 13.7°C | 45 mm | 60% | 3.2 m/s | 6.3 |
| 1989 | 32.0°C | 26.4°C | 20.8°C | 36.6°C | 16.0°C | 72 mm | 68% | 2.4 m/s | 6.9 |
| 1988 | 35.0°C | 28.7°C | 22.5°C | 40.8°C | 17.4°C | 96 mm | 58% | 2.7 m/s | 6.5 |
| 1987 | 31.0°C | 25.9°C | 20.9°C | 35.7°C | 13.6°C | 71 mm | 75% | 3 m/s | 7 |
| 1986 | 37.3°C | 30.4°C | 23.4°C | 44.2°C | 19.8°C | 39 mm | 51% | 3.9 m/s | 7.2 |
| 1985 | 31.7°C | 26.2°C | 20.6°C | 35.7°C | 17.3°C | 59 mm | 71% | 2.4 m/s | 6.9 |
| 1984 | 36.4°C | 29.0°C | 21.6°C | 41.7°C | 15.5°C | 9 mm | 45% | 2.6 m/s | 6.9 |
| 1983 | 35.6°C | 28.9°C | 22.2°C | 41.4°C | 16.8°C | 7 mm | 57% | 3.3 m/s | — |
| 1982 | 31.7°C | 26.7°C | 21.7°C | 35.6°C | 19.3°C | 57 mm | 74% | 2.8 m/s | — |
| 1981 | 35.1°C | 29.3°C | 23.6°C | 42.8°C | 19.7°C | 111 mm | 61% | 3.3 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 34.4°C with lows near 22.5°C (mean 28.5°C), based on 45 years of NASA POWER data.
July averages 83 mm of rainfall in Stillwater, about average for rainfall. The wettest on record was 157 mm in 1996.
The hottest July reached 45.8°C in 1996. The coldest dipped to 13.4°C in 1995.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 0.8°C. Daytime highs moved from 34.1°C to 34.7°C and overnight lows from 21.9°C to 23°C over the same span.
July is one of the warmer months of the year in Stillwater and about average for rainfall, so plan for around 34.4°C daytime highs and 22.5°C at night.
Not quite — July is the 12th coolest month in Stillwater, averaging 28.5°C.
For July in Stillwater, pack light, breathable clothing and sun protection, with typical highs of 34.4°C and lows of 22.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 63% — moderately humid.
Average wind speed in July is 2.8 m/s. The windiest July on record averaged 3.9 m/s (1986).
The wettest July on record was 1996 with 157 mm. On average, July sees 83 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 Stillwater 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.
