Frost Dates for Browning, MT

Based on data from E Glacier weather station, 12 miles away

Elevation: 4377 ft

Frost Dates

Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. June 8
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. September 5

30% Probability

Only a 30% chance of frost remaining by this date. Use these dates for a safer planting window, especially for tender plants sensitive to cold.
Last Spring Frost June 17
First Fall Frost August 31

Hard Freeze (28°F)

Last Spring Hard Freeze May 21
First Fall Hard Freeze September 23
48.56°N, 113.01°W © OpenStreetMap

Growing Season

89 Days June 8 to September 5

USDA Hardiness Zone

Hardiness zones indicate which perennial plants can survive winter in your area. For annual vegetables, frost dates and growing season length matter more than hardiness zone.
Zone 4a

Avg. annual minimum: −30 to −25°F

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Dfb Warm-Summer Continental

Warm summers and cold, snowy winters. A shorter growing season than hot-summer continental. Hardy vegetables, root crops, and cool-season greens do well. Season extension is valuable.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January30°22°13°
February31°22°13°
March37°28°19°
April46°36°27°
May56°45°34°
June64°53°41°
July74°60°46°
August74°59°44°
September63°51°38°
October50°40°29°
November36°29°22°
December29°22°15°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January2.5
February2.4
March2.8
April2.9
May3.3
June3.1
July1.9
August2.5
September3.2
October3.3
November2.7
December2.5

Sunrise / Sunset

Daylight Mountain Time (MT) Longest: 15h 54m · Shortest: 8h 06m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Mountain Time (MT))
Month Sunrise Sunset Daylight
January8:26 AM4:58 PM8h 32m
February7:49 AM5:46 PM9h 56m
March7:55 AM7:30 PM11h 35m
April6:50 AM8:16 PM13h 26m
May5:59 AM8:59 PM15h 01m
June5:37 AM9:29 PM15h 53m
July5:53 AM9:24 PM15h 31m
August6:33 AM8:41 PM14h 09m
September7:17 AM7:37 PM12h 20m
October8:02 AM6:34 PM10h 32m
November7:50 AM4:46 PM8h 56m
December8:25 AM4:32 PM8h 07m

Nearby Stations

St Mary, MTJune 12 - September 5 St. Mary 1 Ssw, MT June 3 - September 8 W Glacier, MT May 18 - September 20 Hungry Horse Dam, MT May 9 - October 1 Carway, ABJune 8 - August 22 Cut Bank Muni AP, MT May 24 - September 15

Plan Your Garden with Planter

Now that you know your frost dates, use Planter to plan your veggie garden! Planter is an easy drag-and-drop garden planner with personalized planting schedules.

Try Planter For Free

Available everywhere: iOS, Android, web, and more!

Planter app garden planner preview