Harrisburg Weather Forecast
- 65
- 88
Chance Thunderstorms
- 60
- 82
Slight Chance Rain Showers
- 56
- 84
Mostly Sunny
- 56
- 84
Partly Sunny
- 57
- 86
Partly Sunny
- 58
- 86
Partly Sunny
Today 23 Sep St. Clair
Mostly sunny. A slight chance of Showers in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Highs in the upper 80s. East Winds around 5 Mph. Chance of rain 40 percent.
Tonight 23 Sep St. Clair
Mostly cloudy. A chance of Showers and Thunderstorms in the evening. Lows in the mid 60s. Northeast Winds 5 to 10 Mph. Chance of rain 40 percent.
Harrisburg Temperature Statistics
September Temperature
Anniston Metro Airport (24.9 miles)
Lowest 9 September, 2026
68.6 °FAverage September
82.6 °FHighest 6 September, 2026
98.7 °F
Climate (2021–2026)
Anniston Metro Airport (24.9 miles)
Average Low 2021–2026
53.3 °FAverage 2021–2026
64.2 °FAverage High 2021–2026
75.5 °F