August is one of the warmer months of the year in Wasilla, with average highs near 15.1°C and lows around 7.5°C (mean 11.3°C). It is a relatively wet time of year, averaging 120 mm of rainfall and 79% relative humidity across the period.
August is one of the warmer months of the year in Wasilla. Across 45 years of records, the warmest August in Wasilla was 2004 — when the month averaged 15.3°C — while the coldest was 1998 at 9.1°C. Typical August days reach 15.1°C with nights near 7.5°C. The long-term trend is warming, about 0.3°C per decade.
August is a relatively wet time of year in Wasilla, averaging 120 mm of rainfall. The wettest August on record was 2006 with 242 mm, while the driest was 2019 at 31 mm.
Relative humidity in Wasilla during August averages 79%. The most humid August was 2022 at 85%, and the least humid was 2015 at 70%.
August receives about 3.7 kWh/m²/day of solar energy in Wasilla. The sunniest Augusts were 2004 and 2019 at 4.5 kWh/m²/day, and the cloudiest was 2022 at 2.9.
Average wind speed in Wasilla during August is 0.8 m/s. The windiest August was 2024 at 1 m/s, while the calmest were 2004, 2005 and 2008, among others at 0.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 10.5°C | 11.0°C | 11.8°C | 11.6°C | 11.5°C | +1°C |
| Avg High | 14.4°C | 14.9°C | 15.6°C | 15.3°C | 15.1°C | +0.7°C |
| Avg Low | 6.6°C | 7.2°C | 8.0°C | 7.9°C | 8.0°C | +1.4°C |
| Avg Rain | 118 mm | 115 mm | 114 mm | 118 mm | 146 mm | +28 mm |
August temperatures in Wasilla have risen by about 1.1°C between 1981–1985 and 2021–2025.
August has ranged from a record low of -2.8°C (1987) to a record high of 26.6°C (2004).
Rainfall in August is a relatively wet time of year, averaging 120 mm, with a wettest year of 242 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.2°C per decade while lows rose 0.4°C per decade, narrowing the gap between day and night.
One of the best times to visit Wasilla
August is one of the best times to visit Wasilla. Expect days averaging 15.1°C and nights around 7.5°C (mean 11.3°C) — warmer than Wasilla's yearly average — with higher rainfall (120 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 | 15.3°C | 11.6°C | 7.8°C | 18.8°C | 2.6°C | 112 mm | 82% | 0.8 m/s | 3.8 |
| 2024 | 13.8°C | 10.3°C | 6.9°C | 19.6°C | 2.9°C | 131 mm | 83% | 1 m/s | 3.5 |
| 2023 | 16.1°C | 12.9°C | 9.6°C | 21.5°C | 6.3°C | 148 mm | 83% | 0.8 m/s | 3.5 |
| 2022 | 14.1°C | 11.0°C | 7.9°C | 21.2°C | 5.0°C | 233 mm | 85% | 0.9 m/s | 2.9 |
| 2021 | 15.0°C | 11.3°C | 7.5°C | 23.7°C | 1.5°C | 140 mm | 80% | 0.7 m/s | 3.6 |
| 2020 | 16.2°C | 12.2°C | 8.2°C | 20.2°C | 5.3°C | 111 mm | 79% | 0.7 m/s | 3.8 |
| 2019 | 18.5°C | 14.1°C | 9.6°C | 22.7°C | 3.0°C | 31 mm | 70% | 0.7 m/s | 4.5 |
| 2018 | 14.3°C | 11.0°C | 7.7°C | 19.7°C | 4.4°C | 181 mm | 84% | 0.8 m/s | 3.1 |
| 2017 | 14.5°C | 11.0°C | 7.5°C | 23.4°C | 4.7°C | 141 mm | 81% | 0.8 m/s | 3.6 |
| 2016 | 15.9°C | 12.3°C | 8.7°C | 19.7°C | 5.5°C | 145 mm | 80% | 0.8 m/s | 3.5 |
| 2015 | 16.2°C | 11.9°C | 7.6°C | 23.4°C | 1.5°C | 58 mm | 70% | 0.7 m/s | 4.3 |
| 2014 | 15.1°C | 11.4°C | 7.8°C | 19.0°C | 2.8°C | 108 mm | 80% | 0.8 m/s | 3.7 |
| 2013 | 15.2°C | 11.7°C | 8.1°C | 20.2°C | 3.8°C | 165 mm | 80% | 0.8 m/s | 3.4 |
| 2012 | 14.7°C | 10.9°C | 7.1°C | 18.9°C | 2.2°C | 105 mm | 78% | 0.8 m/s | 3.7 |
| 2011 | 13.7°C | 10.2°C | 6.8°C | 18.4°C | 3.8°C | 138 mm | 80% | 0.9 m/s | 3.6 |
| 2010 | 15.1°C | 11.4°C | 7.7°C | 20.8°C | 5.8°C | 106 mm | 80% | 0.8 m/s | 3.5 |
| 2009 | 15.2°C | 11.3°C | 7.4°C | 22.3°C | 4.4°C | 89 mm | 75% | 0.7 m/s | 3.8 |
| 2008 | 14.0°C | 10.4°C | 6.9°C | 17.6°C | 4.6°C | 63 mm | 80% | 0.6 m/s | 3.6 |
| 2007 | 16.4°C | 12.6°C | 8.8°C | 22.5°C | 6.1°C | 101 mm | 78% | 0.7 m/s | 4.1 |
| 2006 🌧️ | 13.3°C | 10.1°C | 6.8°C | 19.1°C | 2.9°C | 242 mm | 83% | 0.9 m/s | 3.1 |
| 2005 | 17.1°C | 13.2°C | 9.3°C | 25.9°C | 3.4°C | 86 mm | 79% | 0.6 m/s | 4.1 |
| 2004 🔥 | 19.9°C | 15.3°C | 10.8°C | 26.6°C | 7.1°C | 83 mm | 71% | 0.6 m/s | 4.5 |
| 2003 | 15.2°C | 11.6°C | 8.0°C | 22.8°C | 4.8°C | 122 mm | 79% | 0.8 m/s | 3.8 |
| 2002 | 15.4°C | 11.7°C | 8.0°C | 23.8°C | 5.8°C | 171 mm | 79% | 0.7 m/s | 3.9 |
| 2001 | 15.5°C | 12.0°C | 8.5°C | 20.8°C | 4.1°C | 106 mm | 82% | 0.7 m/s | 3.8 |
| 2000 | 14.1°C | 10.0°C | 5.9°C | 18.2°C | 2.2°C | 74 mm | 76% | 0.8 m/s | 3.8 |
| 1999 | 15.1°C | 11.5°C | 7.9°C | 19.5°C | 4.9°C | 131 mm | 81% | 0.7 m/s | 3.8 |
| 1998 ❄️ | 12.7°C | 9.1°C | 5.6°C | 18.1°C | -0.9°C | 124 mm | 79% | 0.9 m/s | 3.8 |
| 1997 | 16.3°C | 12.5°C | 8.7°C | 22.5°C | 5.4°C | 150 mm | 78% | 0.7 m/s | 3.6 |
| 1996 | 14.3°C | 10.4°C | 6.6°C | 18.2°C | 2.6°C | 102 mm | 77% | 0.7 m/s | 3.4 |
| 1995 | 14.8°C | 11.0°C | 7.3°C | 18.4°C | 5.7°C | 114 mm | 82% | 0.7 m/s | 3.6 |
| 1994 | 17.1°C | 12.7°C | 8.3°C | 22.7°C | 0.9°C | 55 mm | 77% | 0.7 m/s | 4.2 |
| 1993 | 14.8°C | 11.3°C | 7.8°C | 19.9°C | 1.7°C | 149 mm | 80% | 0.9 m/s | 3.9 |
| 1992 | 13.1°C | 9.6°C | 6.0°C | 19.4°C | 3.6°C | 129 mm | 84% | 0.9 m/s | 3.7 |
| 1991 | 14.1°C | 9.8°C | 5.6°C | 18.3°C | 0.6°C | 83 mm | 77% | 0.8 m/s | 3.8 |
| 1990 | 16.6°C | 12.5°C | 8.3°C | 26.3°C | 5.0°C | 108 mm | 77% | 0.7 m/s | 3.6 |
| 1989 | 15.7°C | 12.1°C | 8.5°C | 21.0°C | 4.6°C | 140 mm | 80% | 0.9 m/s | 3.4 |
| 1988 | 14.0°C | 10.4°C | 6.7°C | 17.9°C | 3.9°C | 131 mm | 81% | 0.9 m/s | 3.6 |
| 1987 | 16.0°C | 11.6°C | 7.2°C | 21.8°C | -2.8°C | 54 mm | 76% | 0.7 m/s | 4.1 |
| 1986 | 13.0°C | 9.3°C | 5.6°C | 16.8°C | 2.7°C | 103 mm | 78% | 0.8 m/s | 3.7 |
| 1985 | 13.3°C | 9.6°C | 6.0°C | 20.0°C | 3.6°C | 163 mm | 81% | 0.7 m/s | 3.5 |
| 1984 | 14.8°C | 10.7°C | 6.5°C | 21.5°C | -2.1°C | 97 mm | 76% | 0.8 m/s | 4 |
| 1983 | 14.2°C | 10.1°C | 6.0°C | 20.8°C | 1.8°C | 123 mm | 78% | 0.7 m/s | — |
| 1982 | 14.9°C | 10.7°C | 6.5°C | 20.1°C | 4.5°C | 81 mm | 79% | 0.6 m/s | — |
| 1981 | 14.1°C | 10.3°C | 6.6°C | 21.7°C | 2.3°C | 167 mm | 82% | 0.8 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 15.1°C with lows near 7.5°C (mean 11.3°C), based on 45 years of NASA POWER data.
August averages 120 mm of rainfall in Wasilla, a relatively wet time of year. The wettest on record was 242 mm in 2006.
The hottest August reached 26.6°C in 2004. The coldest dipped to -2.8°C in 1987.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.1°C. Daytime highs moved from 14.3°C to 14.9°C and overnight lows from 6.3°C to 7.9°C over the same span.
August is one of the warmer months of the year in Wasilla and a relatively wet time of year, so plan for around 15.1°C daytime highs and 7.5°C at night.
Not quite — August is the 11th coolest month in Wasilla, averaging 11.3°C.
For August in Wasilla, pack warm layers and a jacket for chilly mornings, with typical highs of 15.1°C and lows of 7.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 79% — quite humid.
Average wind speed in August is 0.8 m/s. The windiest August on record averaged 1 m/s (2024).
The wettest August on record was 2006 with 242 mm. On average, August sees 120 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 Wasilla 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.
