Weather on August 21
Huntsville, AL
55 Years of Data
About This Date
August 21st in Huntsville, AL typically brings hot summer weather, with average highs around 90°F and lows near 68°F. Over 26 years of records, the warmest August 21st was in 2005 (84°F average), while the coldest was 1973 (69°F) — a 15°F range across recorded history. Rain or other precipitation has occurred on about 35% of August 21st dates historically, with the wettest August 21st recording 2.11" of rain.
Planning for August 21st in Huntsville, AL? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 96° | 68° | 82° | 2.11" | — |
| 2025 | 92° | 69° | 80° | 0.76" | — |
| 2024 | 85° | 57° | 71° | — | — |
| 2023 | 88° | 67° | 77° | — | — |
| 2022 | 85° | 69° | 77° | 0.01" | — |
| 2021 | 83° | 72° | 77° | 0.03" | — |
| 2020 | 85° | 65° | 75° | 0.02" | — |
| 2019 | 98° | 69° | 84° | 0.38" | — |
| 2018 | 85° | 73° | 79° | — | — |
| 2017 | 92° | 70° | 81° | — | — |
| 2016 | 85° | 66° | 75° | — | — |
| 2015 | 88° | 70° | 79° | — | — |
| 2014 | 93° | 69° | 81° | — | — |
| 2013 | 84° | 72° | 78° | 0.01" | — |
| 2012 | 84° | 56° | 70° | — | — |
| 2011 | 94° | 69° | 81° | — | — |
| 2010 | 93° | 71° | 82° | — | — |
| 2009 | 88° | 69° | 78° | 0.33" | — |
| 2008 | 94° | 68° | 81° | — | — |
| 2007 | 97° | 71° | 84° | — | — |
| 2006 | 99° | 69° | 84° | — | — |
| 2005warmest | 95° | 73° | 84° | — | — |
| 1974 | 88° | 66° | 77° | — | — |
| 1973coldest | 84° | 54° | 69° | — | — |
| 1972 | 87° | 68° | 78° | 0.3" | — |
| 1971 | 95° | 66° | 81° | — | — |
Huntsville, AL Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Huntsville, AL Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Huntsville, AL Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Huntsville, AL
Most pleasant months in Huntsville, AL: March, April, May, October.
What to expect on August 21st
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
August 21st outlook →