Click on a day for an hourly weather forecast
The temperatures in Junction City in September are comfortable with low of 17°C and and high up to 28°C.
You can expect about 3 to 8 days of rain in Junction City during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Junction City in September 2025.
If you’re planning to visit Junction City in the near future, we highly recommend that you review the 14 day weather forecast for Junction City before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 4° / -5° | 4 | 25 | 2 | 25 mm | Awful | Junction City in January |
| February | 6° / -4° | 5 | 21 | 3 | 34 mm | Awful | Junction City in February |
| March | 14° / 3° | 6 | 24 | 1 | 63 mm | Good | Junction City in March |
| April | 19° / 7° | 6 | 23 | 0 | 88 mm | Good | Junction City in April |
| May | 24° / 13° | 9 | 22 | 0 | 192 mm | Good | Junction City in May |
| June | 30° / 20° | 7 | 23 | 0 | 117 mm | Ok | Junction City in June |
| July | 32° / 22° | 8 | 23 | 0 | 103 mm | Ok | Junction City in July |
| August | 32° / 20° | 8 | 23 | 0 | 117 mm | Ok | Junction City in August |
| September | 28° / 17° | 6 | 24 | 0 | 85 mm | Perfect | Junction City in September |
| October | 20° / 9° | 5 | 26 | 0 | 73 mm | Good | Junction City in October |
| November | 13° / 3° | 3 | 26 | 1 | 44 mm | Ok | Junction City in November |
| December | 6° / -3° | 4 | 26 | 2 | 38 mm | Awful | Junction City in December |