Weather on August 21
Omaha, NE
55 Years of Data
Avg High
84°F
Avg Low
64°F
Warmest
1975
85°F avg
Coldest
2009
63°F avg
About This Date
August 21st in Omaha, NE typically brings warm summer weather, with average highs around 84°F and lows near 64°F. Over 55 years of records, the warmest August 21st was in 1975 (85°F average), while the coldest was 2009 (63°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 36% of August 21st dates historically, with the wettest August 21st recording 6.22" of rain. The last decade has been 1.4°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.4°F cooler on this date compared to 20-30 years ago.
Planning for August 21st in Omaha, NE? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Cooling Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 90° | 68° | 79° | — | — |
| 2024 | 69° | 60° | 65° | — | — |
| 2023 | 89° | 70° | 79° | — | — |
| 2022 | 79° | 60° | 69° | — | — |
| 2021 | 85° | 61° | 73° | 0.61" | — |
| 2020 | 82° | 62° | 72° | — | — |
| 2019 | 90° | 70° | 80° | 0.33" | — |
| 2018 | 69° | 59° | 64° | 4.19" | — |
| 2017 | 84° | 66° | 75° | 0.25" | — |
| 2016 | 74° | 55° | 64° | — | — |
| 2015 | 81° | 55° | 68° | — | — |
| 2014 | 86° | 69° | 78° | 0.05" | — |
| 2013 | 88° | 69° | 78° | — | — |
| 2012 | 85° | 59° | 72° | — | — |
| 2011 | 76° | 62° | 69° | — | — |
| 2010 | 86° | 68° | 77° | 0.08" | — |
| 2009coldest | 71° | 56° | 63° | 0.2" | — |
| 2008 | 80° | 61° | 70° | — | — |
| 2007 | 87° | 66° | 77° | 5.92" | — |
| 2006 | 78° | 61° | 69° | — | — |
| 2005 | 89° | 66° | 78° | — | — |
| 2004 | 81° | 54° | 67° | — | — |
| 2003 | 93° | 71° | 82° | — | — |
| 2002 | 83° | 62° | 72° | 1.52" | — |
| 2001 | 81° | 61° | 71° | 0.23" | — |
| 2000 | 80° | 67° | 73° | — | — |
| 1999 | 81° | 63° | 72° | — | — |
| 1998 | 88° | 68° | 78° | 6.22" | — |
| 1997 | 79° | 58° | 68° | — | — |
| 1996 | 84° | — | — | — | — |
| 1995 | 82° | 65° | 73° | — | — |
| 1994 | 86° | 57° | 72° | — | — |
| 1993 | 71° | 64° | 68° | 0.58" | — |
| 1992 | 84° | 63° | 73° | — | — |
| 1991 | 92° | 64° | 78° | — | — |
| 1990 | 83° | 66° | 74° | — | — |
| 1989 | 85° | 67° | 76° | 0.38" | — |
| 1988 | 93° | 68° | 81° | — | — |
| 1987 | 93° | 75° | 84° | — | — |
| 1986 | 68° | 61° | 64° | 2.06" | — |
| 1985 | 77° | 64° | 71° | — | — |
| 1984 | 80° | 68° | 74° | 1.17" | — |
| 1983 | 94° | 70° | 82° | — | — |
| 1982 | 81° | 58° | 69° | — | — |
| 1981 | 82° | 60° | 71° | — | — |
| 1980 | 84° | 60° | 72° | — | — |
| 1979 | 75° | 64° | 70° | 1.19" | — |
| 1978 | 92° | 66° | 79° | 0.05" | — |
| 1977 | 77° | 63° | 70° | — | — |
| 1976 | 94° | 68° | 81° | — | — |
| 1975warmest | 96° | 73° | 85° | — | — |
| 1974 | 93° | 71° | 82° | 0.48" | — |
| 1973 | 90° | 68° | 79° | — | — |
| 1972 | 86° | 67° | 76° | 0.03" | — |
| 1971 | 88° | 70° | 79° | 0.03" | — |
55 years of data from OMAHA #1