Weather on August 23 at Mount Rainier
Mount Rainier National Park
Based on 54 years of data from Seattle, WA
Elevation Note: Mount Rainier sits at 5,400 ft. Expect temperatures 19°F cooler than the data shown below, which comes from Seattle, WA at a lower elevation.
Planning Your Visit
August 23rd in Mount Rainier National Park (via Seattle, WA) typically brings pleasant summer weather, with average highs around 74°F and lows near 57°F. Over 54 years of records, the warmest August 23rd was in 2025 (75°F average), while the coldest was 1973 (56°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 13% of August 23rd dates historically, with the wettest August 23rd recording 3.91" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for August 23rd in Mount Rainier? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 87°F | 63°F | 0" | -- |
| 2024 | 62°F | 57°F | 0.81" | -- |
| 2023 | 73°F | 57°F | 0" | -- |
| 2022 | 79°F | 60°F | 0" | -- |
| 2021 | 71°F | 54°F | 0" | -- |
| 2020 | 76°F | 55°F | 0" | -- |
| 2019 | 73°F | 55°F | 0" | -- |
| 2018 | 73°F | 58°F | 0" | -- |
| 2017 | 74°F | 60°F | 0" | -- |
| 2016 | 79°F | 54°F | 0" | -- |
| 2015 | 82°F | 57°F | 0" | -- |
| 2014 | 84°F | 59°F | 0" | -- |
| 2013 | 78°F | 63°F | 0" | -- |
| 2012 | 69°F | 58°F | 0" | -- |
| 2011 | 78°F | 61°F | 0" | -- |
| 2010 | 75°F | 54°F | 0" | -- |
| 2009 | 71°F | 59°F | 0" | -- |
| 2008 | 83°F | 56°F | 0" | -- |
| 2007 | 78°F | 57°F | 0" | -- |
| 2006 | 68°F | 53°F | 0" | -- |
| 2005 | 72°F | 57°F | 0" | -- |
| 2004 | 75°F | 60°F | 0" | -- |
| 2003 | 70°F | 50°F | 0" | -- |
| 2002 | 84°F | 56°F | 0" | -- |
| 2001 | 67°F | 54°F | 0.13" | -- |
| 2000 | 82°F | 57°F | 0" | -- |
| 1999 | 81°F | 58°F | 0" | -- |
| 1997 | 73°F | 62°F | 0" | 0" |
| 1996 | 84°F | 55°F | 0" | 0" |
| 1995 | 72°F | 53°F | 0" | 0" |
| 1994 | 76°F | 59°F | 0" | 0" |
| 1993 | 67°F | 55°F | 0.91" | 0" |
| 1992 | 73°F | 53°F | 0" | 0" |
| 1991 | 65°F | 56°F | 0" | 0" |
| 1990 | 69°F | 55°F | 0" | 0" |
| 1989 | 70°F | 58°F | 0" | 0" |
| 1988 | 82°F | 59°F | 0" | 0" |
| 1987 | 81°F | 55°F | 0" | 0" |
| 1986 | 80°F | 60°F | 0" | 0" |
| 1985 | 82°F | 54°F | 0" | 0" |
| 1984 | 71°F | 57°F | 0" | 0" |
| 1983 | 66°F | 60°F | 0" | 0" |
| 1982 | 79°F | 56°F | 0" | 0" |
| 1981 | 85°F | 57°F | 0" | 0" |
| 1980 | 70°F | 57°F | 0" | 0" |
| 1979 | 68°F | 59°F | 0" | 0" |
| 1978 | 66°F | 53°F | 0.28" | 0" |
| 1977 | 64°F | 56°F | 3.91" | 0" |
| 1976 | 67°F | 58°F | 0.2" | 0" |
| 1975 | 63°F | 52°F | 1.35" | 0" |
| 1974 | 76°F | 63°F | 0" | 0" |
| 1973 | 63°F | 50°F | 0" | 0" |
| 1972 | 76°F | 55°F | 0" | 0" |
| 1971 | 76°F | 55°F | 0" | 0" |