Typical Weather in Williston, ND in September
72° F Avg High
43° F Avg Low
3 Rainy Days
☀️ Temperature Summary
September is a popular time to visit, with an inviting climate featuring warm temperatures. September is one of the warmer months of the year for Williston, with highs averaging around 72°F. You can expect overnight lows near 43°F most days. Temperatures will usually fall as the month goes on, with daily high temperatures ranging between 77°F and 64°F.
The warm, dry temperatures in September make Williston a great destination to relax and soak up the sun.
High Temps Throughout the Year
🎒 What to Pack
Pick up a few of these items to keep your trip fun and comfortable.
☔ Rain Summary
In September you can expect close to a 11% chance of rain for any given day. It rains more than usual in September, with total rainfall for the month typically near 1 inches.
Rainfall Throughout the Year
Planning a trip to Williston? Try our free trip weather planner