August is one of the warmer months of the year in Altoona, with average highs near 28.6°C and lows around 15.7°C (mean 22.2°C). It is about average for rainfall, averaging 93 mm of rainfall and 68% relative humidity across the period.
August is one of the warmer months of the year in Altoona. Across 45 years of records, the warmest Augusts in Altoona were 1995 and 2016 — when the month averaged 24.8°C — while the coldest were 1982 and 1994 at 19.8°C. Typical August days reach 28.6°C with nights near 15.7°C. The long-term trend is warming, about 0.3°C per decade.
August is about average for rainfall in Altoona, averaging 93 mm of rainfall. The wettest August on record was 2024 with 186 mm, while the driest was 1989 at 26 mm.
Relative humidity in Altoona during August averages 68%. The most humid August was 2018 at 86%, and the least humid was 1995 at 57%.
August receives about 5.1 kWh/m²/day of solar energy in Altoona. The sunniest Augusts were 2008 and 2025 at 5.6 kWh/m²/day, and the cloudiest was 2000 at 4.5.
Average wind speed in Altoona during August is 0.1 m/s. The windiest Augusts were 2023, 2024 and 2025, among others at 0.1 m/s, while the calmest was 2016 at 0 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.6°C | 21.8°C | 22.5°C | 22.2°C | 22.9°C | +1.3°C |
| Avg High | 28.3°C | 28.5°C | 28.9°C | 28.4°C | 29.2°C | +0.9°C |
| Avg Low | 15.0°C | 15.2°C | 16.2°C | 15.9°C | 16.7°C | +1.7°C |
| Avg Rain | 83 mm | 92 mm | 92 mm | 92 mm | 113 mm | +31 mm |
August temperatures in Altoona have risen by about 1.2°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 3.3°C (1982) to a record high of 37.7°C (1995).
Rainfall in August is about average for rainfall, averaging 93 mm, with a wettest year of 186 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.1°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 Altoona
August is one of the best times to visit Altoona. Expect days averaging 28.6°C and nights around 15.7°C (mean 22.2°C) — warmer than Altoona's yearly average — with higher rainfall (93 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 | 29.1°C | 22.0°C | 15.0°C | 35.4°C | 7.0°C | 30 mm | 57% | 0.1 m/s | 5.6 |
| 2024 🌧️ | 27.6°C | 21.8°C | 16.1°C | 33.5°C | 8.3°C | 186 mm | 77% | 0.1 m/s | 5 |
| 2023 | 28.1°C | 21.9°C | 15.6°C | 32.3°C | 10.7°C | 117 mm | 71% | 0.1 m/s | 5.2 |
| 2022 | 29.7°C | 23.3°C | 17.0°C | 35.0°C | 11.2°C | 118 mm | 68% | 0.1 m/s | 5.2 |
| 2021 | 30.0°C | 24.3°C | 18.7°C | 36.3°C | 12.3°C | 156 mm | 72% | 0.1 m/s | 4.8 |
| 2020 | 30.6°C | 24.0°C | 17.5°C | 35.4°C | 11.9°C | 73 mm | 63% | 0.1 m/s | 5.2 |
| 2019 | 28.6°C | 22.5°C | 16.4°C | 32.7°C | 10.3°C | 83 mm | 71% | 0.1 m/s | 5.3 |
| 2018 | 26.9°C | 22.1°C | 17.3°C | 31.7°C | 11.9°C | 144 mm | 86% | 0.1 m/s | 4.7 |
| 2017 | 26.6°C | 20.6°C | 14.5°C | 31.7°C | 9.9°C | 87 mm | 73% | 0.1 m/s | 5.1 |
| 2016 | 31.4°C | 24.8°C | 18.2°C | 34.8°C | 11.9°C | 95 mm | 67% | 0 m/s | 5.5 |
| 2015 | 29.0°C | 22.0°C | 14.9°C | 34.4°C | 10.6°C | 53 mm | 63% | 0.1 m/s | 5.5 |
| 2014 | 26.7°C | 20.5°C | 14.2°C | 31.3°C | 8.4°C | 116 mm | 73% | 0.1 m/s | 5.2 |
| 2013 | 27.9°C | 21.6°C | 15.2°C | 32.7°C | 8.6°C | 64 mm | 68% | 0.1 m/s | 5 |
| 2012 | 28.9°C | 22.5°C | 16.1°C | 33.5°C | 10.6°C | 78 mm | 66% | 0.1 m/s | 5.5 |
| 2011 | 27.3°C | 21.6°C | 15.9°C | 31.0°C | 9.4°C | 134 mm | 73% | 0.1 m/s | 5 |
| 2010 | 30.4°C | 23.5°C | 16.7°C | 35.0°C | 10.1°C | 65 mm | 63% | 0.1 m/s | 5.1 |
| 2009 | 28.4°C | 22.5°C | 16.6°C | 33.7°C | 9.9°C | 74 mm | 73% | 0.1 m/s | 5.1 |
| 2008 | 27.3°C | 20.5°C | 13.8°C | 32.9°C | 9.2°C | 72 mm | 67% | 0.1 m/s | 5.6 |
| 2007 | 28.7°C | 22.7°C | 16.7°C | 35.0°C | 12.0°C | 169 mm | 72% | 0.1 m/s | 4.8 |
| 2006 | 29.8°C | 23.0°C | 16.3°C | 35.4°C | 9.7°C | 77 mm | 64% | 0.1 m/s | 5.5 |
| 2005 | 30.5°C | 24.0°C | 17.5°C | 36.4°C | 11.2°C | 71 mm | 65% | 0.1 m/s | 4.8 |
| 2004 | 26.2°C | 20.4°C | 14.6°C | 31.0°C | 9.4°C | 101 mm | 78% | 0.1 m/s | 5.1 |
| 2003 | 28.5°C | 22.7°C | 16.9°C | 34.0°C | 9.2°C | 152 mm | 78% | 0.1 m/s | 4.9 |
| 2002 | 31.1°C | 23.9°C | 16.8°C | 37.3°C | 11.1°C | 51 mm | 57% | 0.1 m/s | 5.5 |
| 2001 | 31.1°C | 24.2°C | 17.2°C | 36.5°C | 12.1°C | 82 mm | 62% | 0.1 m/s | 5 |
| 2000 | 27.3°C | 21.2°C | 15.2°C | 31.0°C | 6.7°C | 77 mm | 69% | 0.1 m/s | 4.5 |
| 1999 | 28.7°C | 21.8°C | 14.9°C | 36.5°C | 8.4°C | 106 mm | 62% | 0.1 m/s | 5.2 |
| 1998 | 29.9°C | 22.9°C | 16.0°C | 32.3°C | 7.8°C | 64 mm | 63% | 0.1 m/s | 5.2 |
| 1997 | 26.9°C | 20.7°C | 14.4°C | 31.9°C | 9.5°C | 121 mm | 68% | 0.1 m/s | 4.8 |
| 1996 | 26.8°C | 20.7°C | 14.7°C | 30.4°C | 11.0°C | 82 mm | 75% | 0.1 m/s | 5.5 |
| 1995 🔥 | 32.4°C | 24.8°C | 17.3°C | 37.7°C | 11.3°C | 31 mm | 57% | 0.1 m/s | 5.3 |
| 1994 | 25.8°C | 19.8°C | 13.9°C | 31.8°C | 7.0°C | 184 mm | 77% | 0.1 m/s | 4.7 |
| 1993 | 29.9°C | 22.9°C | 15.8°C | 36.1°C | 8.9°C | 73 mm | 65% | 0.1 m/s | 5.3 |
| 1992 | 26.6°C | 20.0°C | 13.4°C | 31.9°C | 9.0°C | 76 mm | 69% | 0.1 m/s | 5.2 |
| 1991 | 30.1°C | 23.1°C | 16.2°C | 35.7°C | 11.5°C | 63 mm | 60% | 0.1 m/s | 5.2 |
| 1990 | 27.5°C | 21.3°C | 15.1°C | 33.5°C | 11.2°C | 117 mm | 73% | 0.1 m/s | 4.7 |
| 1989 | 26.1°C | 20.4°C | 14.7°C | 29.6°C | 8.0°C | 26 mm | 76% | 0.1 m/s | 4.9 |
| 1988 | 31.1°C | 23.9°C | 16.8°C | 37.4°C | 8.5°C | 103 mm | 58% | 0.1 m/s | 5 |
| 1987 | 28.8°C | 22.0°C | 15.3°C | 35.5°C | 7.8°C | 113 mm | 65% | 0.1 m/s | 4.8 |
| 1986 | 27.3°C | 20.7°C | 14.0°C | 31.6°C | 5.3°C | 63 mm | 65% | 0.1 m/s | 5.5 |
| 1985 | 28.0°C | 21.5°C | 14.9°C | 33.6°C | 10.3°C | 71 mm | 64% | 0.1 m/s | 4.7 |
| 1984 | 27.1°C | 21.3°C | 15.4°C | 33.0°C | 7.9°C | 165 mm | 79% | 0.1 m/s | 5.1 |
| 1983 | 31.0°C | 23.7°C | 16.5°C | 35.7°C | 10.7°C | 65 mm | 62% | 0.1 m/s | — |
| 1982 ❄️ | 26.7°C | 19.8°C | 12.9°C | 32.5°C | 3.3°C | 83 mm | 65% | 0.1 m/s | — |
| 1981 | 28.7°C | 21.4°C | 14.1°C | 31.6°C | 7.1°C | 56 mm | 62% | 0.1 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 28.6°C with lows near 15.7°C (mean 22.2°C), based on 45 years of NASA POWER data.
August averages 93 mm of rainfall in Altoona, about average for rainfall. The wettest on record was 186 mm in 2024.
The hottest August reached 37.7°C in 1995. The coldest dipped to 3.3°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.2°C. Daytime highs moved from 28.3°C to 28.9°C and overnight lows from 14.8°C to 16.5°C over the same span.
August is one of the warmer months of the year in Altoona and about average for rainfall, so plan for around 28.6°C daytime highs and 15.7°C at night.
Not quite — August is the 11th coolest month in Altoona, averaging 22.2°C.
For August in Altoona, pack light layers you can adjust through the day, with typical highs of 28.6°C and lows of 15.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 68% — moderately humid.
Average wind speed in August is 0.1 m/s. The windiest August on record averaged 0.1 m/s (1981).
The wettest August on record was 2024 with 186 mm. On average, August sees 93 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 Altoona 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.
