August is one of the warmer months of the year in Billings, with average highs near 30°C and lows around 14.5°C (mean 22.3°C). It is about average for rainfall, averaging 31 mm of rainfall and 44% relative humidity across the period.
August is one of the warmer months of the year in Billings. Across 45 years of records, the warmest August in Billings was 2003 — when the month averaged 25.4°C — while the coldest was 1993 at 18.3°C. Typical August days reach 30°C with nights near 14.5°C. The long-term August temperature trend is broadly flat.
August is about average for rainfall in Billings, averaging 31 mm of rainfall. The wettest August on record was 2014 with 111 mm, while the driest was 2001 at 3 mm.
Relative humidity in Billings during August averages 44%. The most humid August was 1993 at 57%, and the least humid was 1988 at 27%.
August receives about 5.9 kWh/m²/day of solar energy in Billings. The sunniest Augusts were 1995 and 2001 at 6.4 kWh/m²/day, and the cloudiest were 2014 and 2021 at 5.3.
Average wind speed in Billings during August is 2.3 m/s. The windiest Augusts were 2000, 2002 and 2008, among others at 2.6 m/s, while the calmest was 1981 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 22.0°C | 22.1°C | 22.3°C | 22.0°C | 23.1°C | +1.1°C |
| Avg High | 30.0°C | 29.9°C | 30.2°C | 29.5°C | 30.6°C | +0.6°C |
| Avg Low | 14.1°C | 14.3°C | 14.3°C | 14.5°C | 15.8°C | +1.7°C |
| Avg Rain | 29 mm | 28 mm | 22 mm | 43 mm | 35 mm | +7 mm |
August temperatures in Billings have risen by about 0.3°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 1.5°C (1992) to a record high of 39.7°C (1983).
Rainfall in August is about average for rainfall, averaging 31 mm, with a wettest year of 111 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.1°C per decade while lows rose 0.3°C per decade, narrowing the gap between day and night.
One of the best times to visit Billings
August is one of the best times to visit Billings. Expect days averaging 30°C and nights around 14.5°C (mean 22.3°C) — warmer than Billings's yearly average — with moderate rainfall (31 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 | 30.2°C | 22.9°C | 15.7°C | 37.8°C | 11.0°C | 23 mm | 48% | 2.2 m/s | 5.9 |
| 2024 | 30.4°C | 22.7°C | 15.1°C | 39.2°C | 11.2°C | 42 mm | 48% | 2.2 m/s | 5.8 |
| 2023 | 29.7°C | 22.8°C | 15.8°C | 36.9°C | 12.7°C | 37 mm | 53% | 2.3 m/s | 5.8 |
| 2022 | 32.7°C | 25.0°C | 17.4°C | 38.6°C | 11.7°C | 22 mm | 42% | 2.2 m/s | 6 |
| 2021 | 29.6°C | 22.3°C | 15.0°C | 37.9°C | 9.0°C | 55 mm | 45% | 2.5 m/s | 5.3 |
| 2020 | 30.7°C | 23.1°C | 15.6°C | 37.4°C | 8.8°C | 33 mm | 46% | 2.2 m/s | 6 |
| 2019 | 29.2°C | 21.9°C | 14.7°C | 35.0°C | 8.6°C | 34 mm | 55% | 2.3 m/s | 6.1 |
| 2018 | 27.8°C | 20.8°C | 13.8°C | 39.1°C | 5.4°C | 54 mm | 52% | 2.4 m/s | 5.5 |
| 2017 | 29.7°C | 22.3°C | 14.9°C | 35.0°C | 10.9°C | 10 mm | 39% | 2.1 m/s | 5.9 |
| 2016 | 29.1°C | 21.3°C | 13.6°C | 36.1°C | 6.4°C | 42 mm | 43% | 2.4 m/s | 6.3 |
| 2015 | 28.9°C | 21.4°C | 14.0°C | 37.4°C | 4.8°C | 45 mm | 47% | 2.4 m/s | 5.7 |
| 2014 🌧️ | 27.6°C | 21.0°C | 14.4°C | 37.0°C | 5.0°C | 111 mm | 55% | 2.2 m/s | 5.3 |
| 2013 | 31.8°C | 24.0°C | 16.2°C | 36.8°C | 13.3°C | 20 mm | 45% | 2.2 m/s | 6.1 |
| 2012 | 31.5°C | 23.1°C | 14.7°C | 37.4°C | 7.6°C | 12 mm | 34% | 2.4 m/s | 6.2 |
| 2011 | 30.7°C | 22.9°C | 15.2°C | 35.2°C | 10.8°C | 28 mm | 49% | 2.3 m/s | 6.1 |
| 2010 | 28.5°C | 20.8°C | 13.2°C | 37.6°C | 5.5°C | 72 mm | 50% | 2.4 m/s | 5.9 |
| 2009 | 28.1°C | 20.5°C | 12.9°C | 34.0°C | 8.0°C | 50 mm | 50% | 2.5 m/s | 5.8 |
| 2008 | 30.4°C | 22.2°C | 14.0°C | 39.0°C | 9.6°C | 22 mm | 41% | 2.6 m/s | 6.3 |
| 2007 | 30.7°C | 22.8°C | 14.8°C | 37.8°C | 9.7°C | 19 mm | 41% | 2.5 m/s | 6 |
| 2006 | 30.7°C | 22.5°C | 14.3°C | 37.2°C | 8.6°C | 21 mm | 36% | 2.4 m/s | 6.2 |
| 2005 | 28.5°C | 20.9°C | 13.2°C | 36.9°C | 7.2°C | 37 mm | 46% | 2.3 m/s | 5.9 |
| 2004 | 27.9°C | 20.6°C | 13.2°C | 36.3°C | 9.5°C | 20 mm | 45% | 2.4 m/s | 6 |
| 2003 🔥 | 33.4°C | 25.4°C | 17.4°C | 39.2°C | 8.4°C | 8 mm | 34% | 2.5 m/s | 6 |
| 2002 | 27.7°C | 19.8°C | 11.9°C | 36.3°C | 5.7°C | 28 mm | 46% | 2.6 m/s | 5.8 |
| 2001 | 33.1°C | 24.7°C | 16.2°C | 39.5°C | 11.3°C | 3 mm | 32% | 2.2 m/s | 6.4 |
| 2000 | 31.7°C | 23.6°C | 15.5°C | 38.0°C | 8.2°C | 8 mm | 33% | 2.6 m/s | 6 |
| 1999 | 30.6°C | 22.9°C | 15.2°C | 36.3°C | 10.3°C | 52 mm | 45% | 2.3 m/s | 6 |
| 1998 | 31.4°C | 23.6°C | 15.9°C | 37.3°C | 12.6°C | 30 mm | 43% | 2.2 m/s | 5.9 |
| 1997 | 28.5°C | 21.1°C | 13.7°C | 34.7°C | 7.4°C | 36 mm | 52% | 2.2 m/s | 5.6 |
| 1996 | 31.9°C | 23.4°C | 14.9°C | 37.3°C | 9.4°C | 6 mm | 33% | 2.4 m/s | 6.3 |
| 1995 | 30.5°C | 21.9°C | 13.2°C | 38.5°C | 6.4°C | 28 mm | 43% | 2.4 m/s | 6.4 |
| 1994 | 30.9°C | 23.3°C | 15.7°C | 36.8°C | 8.0°C | 7 mm | 39% | 2.2 m/s | 5.7 |
| 1993 ❄️ | 25.4°C | 18.3°C | 11.1°C | 33.2°C | 4.3°C | 37 mm | 57% | 2.4 m/s | 5.7 |
| 1992 | 27.4°C | 19.7°C | 11.9°C | 34.9°C | 1.5°C | 15 mm | 46% | 2.4 m/s | 6 |
| 1991 | 32.2°C | 24.1°C | 16.1°C | 36.0°C | 10.1°C | 19 mm | 39% | 2.2 m/s | 6.3 |
| 1990 | 30.4°C | 22.6°C | 14.8°C | 38.0°C | 10.9°C | 48 mm | 44% | 2.1 m/s | 6.2 |
| 1989 | 28.8°C | 21.0°C | 13.3°C | 36.8°C | 7.1°C | 34 mm | 45% | 2.3 m/s | 5.9 |
| 1988 | 31.4°C | 22.9°C | 14.4°C | 37.2°C | 8.6°C | 4 mm | 27% | 2.6 m/s | 6.2 |
| 1987 | 26.0°C | 18.5°C | 10.9°C | 35.6°C | 7.1°C | 52 mm | 49% | 2.3 m/s | 6.1 |
| 1986 | 29.9°C | 21.9°C | 14.0°C | 35.8°C | 10.6°C | 33 mm | 42% | 2.3 m/s | 5.8 |
| 1985 | 27.7°C | 19.4°C | 11.2°C | 36.2°C | 5.8°C | 60 mm | 46% | 2.6 m/s | 5.7 |
| 1984 | 31.8°C | 24.1°C | 16.3°C | 36.8°C | 11.4°C | 19 mm | 38% | 2.3 m/s | 5.6 |
| 1983 | 33.1°C | 25.3°C | 17.6°C | 39.7°C | 13.0°C | 19 mm | 39% | 2.1 m/s | — |
| 1982 | 30.9°C | 22.6°C | 14.3°C | 36.8°C | 9.4°C | 21 mm | 47% | 2.3 m/s | — |
| 1981 | 30.6°C | 22.7°C | 14.8°C | 35.4°C | 7.9°C | 17 mm | 43% | 1.9 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 30°C with lows near 14.5°C (mean 22.3°C), based on 45 years of NASA POWER data.
August averages 31 mm of rainfall in Billings, about average for rainfall. The wettest on record was 111 mm in 2014.
The hottest August reached 39.7°C in 1983. The coldest dipped to 1.5°C in 1992.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 0.3°C — but days and nights have moved in opposite directions. Overnight lows rose from 14.8°C to 15.8°C while daytime highs eased from 30.8°C to 30.5°C, narrowing the gap between day and night.
August is one of the warmer months of the year in Billings and about average for rainfall, so plan for around 30°C daytime highs and 14.5°C at night.
Not quite — August is the 11th coolest month in Billings, averaging 22.3°C.
For August in Billings, pack light, breathable clothing and sun protection, with typical highs of 30°C and lows of 14.5°C.
Relative humidity in August averages 44% — relatively dry.
Average wind speed in August is 2.3 m/s. The windiest August on record averaged 2.6 m/s (1985).
The wettest August on record was 2014 with 111 mm. On average, August sees 31 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 Billings behaves each August, 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 August specifically, along with year-by-year records and how the month has changed over the decades.
