🌷 Your Ultimate Garden Calendar!

Weather Almanac: Thompson Falls, MT 59873

🗓️ Historical norms for September

August October
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.
September avg. precipitation
🌧️ 1.13"
September days below freezing
📉 ≈1.0 days
Average September lows 42°F – 46°F
USDA Zone
6a
Annual extreme lows -10°F to -5°F
Last Spring Frost (36°F)
🌷 May 28
View full details
First Fall Frost (36°F)
🍂 Sep 13
View full details

Book Recommendations (ads!)

📚 Rocky Mountain Month-By-Month Gardening: What to Do Each Month to Have A Beautiful Garden All Year - Colorado, Idaho, Montana, Utah, Wyoming

F: Forecast
H: Normal High Temp
L: Normal Low Temp
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.

Temperature climatic data from weather station: THOMPSON FALLS PH (USC00248211)

Precipitation climatic data from weather station: THOMPSON FALLS PH (USC00248211)

Agricultural climatic data from weather station: THOMPSON FALLS PH (USC00248211)