Frost Dates for Thompson A, MB
Elevation: 223 m
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 11
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.
August 20
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 15
First Fall Frost
August 8
Hard Freeze (−2°C)
Last Spring Hard Freeze
May 31
First Fall Hard Freeze
September 9
Growing Season
70 Days
June 11 to August 20
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 2a
Avg. annual minimum: −46 to −43°C
Köppen Climate
The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Dfc
Subarctic
Short, cool summers and long, very cold winters. Growing seasons of 3–4 months require fast-maturing varieties. Root vegetables, potatoes, and cold-hardy greens are the most reliable.
Temperature
-30°
-15°
0°
15°
Avg High
Avg Temp
Avg Low
Light Frost (0°C)
Hard Frost (−2°C)
Temperature table
| Month | Avg High | Avg Temp | Avg Low |
|---|---|---|---|
| January | -18° | -24° | -29° |
| February | -13° | -20° | -27° |
| March | -5° | -13° | -21° |
| April | 5° | -2° | -9° |
| May | 13° | 6° | -1° |
| June | 20° | 13° | 6° |
| July | 23° | 16° | 9° |
| August | 21° | 15° | 8° |
| September | 15° | 8° | 2° |
| October | 5° | 0° | -4° |
| November | -7° | -11° | -16° |
| December | -16° | -21° | -26° |
Precipitation
0 mm
30 mm
60 mm
90 mm
Precipitation table
| Month | Precipitation |
|---|---|
| January | 3 |
| February | 3 |
| March | 8 |
| April | 10 |
| May | 46 |
| June | 61 |
| July | 89 |
| August | 91 |
| September | 66 |
| October | 38 |
| November | 20 |
| December | 0 |
Sunrise / Sunset
Daylight
Longest: 17h 17m · Shortest: 6h 43m
Sunrise and sunset table
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 8:20 AM | 3:40 PM | 7h 20m |
| February | 7:21 AM | 4:39 PM | 9h 17m |
| March | 6:17 AM | 5:43 PM | 11h 27m |
| April | 5:04 AM | 6:56 PM | 13h 53m |
| May | 3:60 AM | 8:00 PM | 16h 00m |
| June | 3:23 AM | 8:37 PM | 17h 15m |
| July | 3:38 AM | 8:22 PM | 16h 44m |
| August | 4:35 AM | 7:25 PM | 14h 49m |
| September | 5:47 AM | 6:13 PM | 12h 26m |
| October | 6:58 AM | 5:02 PM | 10h 05m |
| November | 8:03 AM | 3:57 PM | 7h 54m |
| December | 8:38 AM | 3:22 PM | 6h 45m |
Nearby Stations
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 FreeAvailable everywhere: iOS, Android, web, and more!
