Junction City Weather Forecast
- 73
- 101
Slight Chance Thunderstorms
- 73
- 101
Slight Chance Thunderstorms
- 72
- 97
Slight Chance Thunderstorms
- 72
- 97
Slight Chance Thunderstorms
- 72
- 96
Slight Chance Thunderstorms
- 71
- 97
Slight Chance Thunderstorms
- 70
- 96
Slight Chance Thunderstorms
Today 7 Sep Union
Mostly sunny with a slight chance of Showers and Thunderstorms. Hot. Near steady temperature in the upper 90s. Northeast Winds around 5 Mph. Chance of rain 20 percent. Heat index Values up to 108.
Tonight 7 Sep Union
Mostly clear. A slight chance of Showers and Thunderstorms this evening. Lows in the mid 70s. East Winds around 5 Mph this Evening, becoming light and variable. Chance of rain 20 percent.
Junction City Temperature Statistics
September Temperature
South Arkansas Regional Airport (14.9 miles)
Lowest 1 September, 2026
71.7 °FAverage September
85.6 °FHighest 4 September, 2026
100.7 °F
Climate (2021–2026)
South Arkansas Regional Airport (14.9 miles)
Average Low 2021–2026
54.3 °FAverage 2021–2026
65.5 °FAverage High 2021–2026
77.4 °F