Frost Dates for THULE, Greenland
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 15
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 15
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 19
First Fall Frost
August 8
Hard Freeze (−2°C)
Last Spring Hard Freeze
June 6
First Fall Hard Freeze
August 22
Growing Season
61 Days
June 15 to August 15
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 2b
Avg. annual minimum: −43 to −40°C
Köppen Climate
The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
ET
Tundra
No true summer — the warmest month averages below 10°C (50°F). Growing is limited to hardy greens, root crops, and cold-frames during the brief warm period. Permafrost restricts root depth.
Temperature
-30°
-20°
-10°
0°
10°
Avg High
Avg Temp
Avg Low
Light Frost (0°C)
Hard Frost (−2°C)
Temperature table
| Month | Avg High | Avg Temp | Avg Low |
|---|---|---|---|
| January | -23° | -26° | -29° |
| February | -24° | -27° | -30° |
| March | -22° | -25° | -28° |
| April | -12° | -16° | -19° |
| May | -3° | -5° | -8° |
| June | 5° | 3° | 1° |
| July | 9° | 7° | 5° |
| August | 7° | 4° | 2° |
| September | -1° | -4° | -7° |
| October | -9° | -12° | -15° |
| November | -16° | -19° | -22° |
| December | -20° | -23° | -26° |
Precipitation
0 mm
20 mm
40 mm
60 mm
Precipitation table
| Month | Precipitation |
|---|---|
| January | 0 |
| February | 0 |
| March | 0 |
| April | 0 |
| May | 0 |
| June | 20 |
| July | 51 |
| August | 64 |
| September | 18 |
| October | 20 |
| November | 8 |
| December | 3 |
Sunrise / Sunset
Daylight
Longest: 24h 00m · Shortest: 0h 00m
Sunrise and sunset table
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | – | – | 0h (polar night) |
| February | 11:24 AM | 12:36 PM | 1h 12m |
| March | 6:48 AM | 5:12 PM | 10h 25m |
| April | 3:04 AM | 8:56 PM | 17h 51m |
| May | – | – | 24h (midnight sun) |
| June | – | – | 24h (midnight sun) |
| July | – | – | 24h (midnight sun) |
| August | – | – | 24h (midnight sun) |
| September | 5:23 AM | 6:37 PM | 13h 15m |
| October | 9:00 AM | 2:60 PM | 5h 60m |
| November | – | – | 0h (polar night) |
| December | – | – | 0h (polar night) |
Nearby Stations
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