Frost Dates for Herschel Island, YT
Elevation: 1 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 17
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 26
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 20
First Fall Frost
August 17
Hard Freeze (−2°C)
Last Spring Hard Freeze
June 2
First Fall Hard Freeze
September 10
Growing Season
70 Days
June 17 to August 26
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 3a
Avg. annual minimum: −40 to −37°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°
-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 | -20° | -23° | -26° |
| February | -20° | -24° | -27° |
| March | -18° | -21° | -25° |
| April | -10° | -13° | -17° |
| May | -1° | -3° | -6° |
| June | 7° | 4° | 1° |
| July | 13° | 9° | 6° |
| August | 10° | 7° | 4° |
| September | 5° | 3° | 0° |
| October | -3° | -5° | -7° |
| November | -11° | -14° | -17° |
| December | -18° | -21° | -24° |
Precipitation
0 mm
30 mm
60 mm
90 mm
Precipitation table
| Month | Precipitation |
|---|---|
| January | 28 |
| February | 33 |
| March | 0 |
| April | 89 |
| May | 8 |
| June | 10 |
| July | 23 |
| August | 28 |
| September | 13 |
| October | 15 |
| November | 0 |
| December | 5 |
Sunrise / Sunset
Daylight
Longest: 24h 00m · Shortest: 0h 00m
Sunrise and sunset table
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | – | – | 0h (polar night) |
| February | 8:37 AM | 3:23 PM | 6h 45m |
| March | 6:30 AM | 5:30 PM | 10h 59m |
| April | 4:14 AM | 7:46 PM | 15h 31m |
| May | 1:36 AM | 10:24 PM | 20h 48m |
| June | – | – | 24h (midnight sun) |
| July | – | – | 24h (midnight sun) |
| August | 3:15 AM | 8:45 PM | 17h 29m |
| September | 5:36 AM | 6:24 PM | 12h 48m |
| October | 7:48 AM | 4:12 PM | 8h 24m |
| November | 10:35 AM | 1:25 PM | 2h 50m |
| December | – | – | 0h (polar night) |
Nearby Stations
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