Frost Dates for Eureka, NU

Frost Dates

Last Spring Frost (50%) iA 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%) iA 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. August 13
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30% Probability iOnly 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 5

Hard Freeze (−2°C)

Last Spring Hard Freeze June 7
First Fall Hard Freeze August 29
79.98°N, -85.93°W © OpenStreetMap

Growing Season

59 Days June 15 to August 13

USDA Hardiness Zone iHardiness 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 1a

Avg. annual minimum: −60 to −55°F (−51 to −48°C)

Learn more

Köppen Climate iThe 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.

Köppen climate map

Temperature

-45° -30° -15° 0°
-36°
High: -32°C
Avg: -36°C
Low: -40°C
Jan
-37°
High: -33°C
Avg: -37°C
Low: -41°C
Feb
-36°
High: -33°C
Avg: -36°C
Low: -40°C
Mar
-26°
High: -22°C
Avg: -26°C
Low: -30°C
Apr
-10°
High: -7°C
Avg: -10°C
Low: -13°C
May
3°
High: 6°C
Avg: 3°C
Low: 0°C
Jun
7°
High: 10°C
Avg: 7°C
Low: 3°C
Jul
3°
High: 6°C
Avg: 3°C
Low: 1°C
Aug
-6°
High: -3°C
Avg: -6°C
Low: -8°C
Sep
-20°
High: -16°C
Avg: -20°C
Low: -23°C
Oct
-28°
High: -24°C
Avg: -28°C
Low: -32°C
Nov
-33°
High: -30°C
Avg: -33°C
Low: -37°C
Dec
−2°C
Avg High Avg Temp Avg Low Hard Frost (−2°C)

Precipitation

0 mm 10 mm
0 mm
0.0 mm
Jan
0 mm
0.0 mm
Feb
0 mm
0.0 mm
Mar
0 mm
0.0 mm
Apr
0 mm
0.0 mm
May
0 mm
0.0 mm
Jun
3 mm
2.5 mm
Jul
5 mm
5.1 mm
Aug
0 mm
0.0 mm
Sep
0 mm
0.0 mm
Oct
0 mm
0.0 mm
Nov
0 mm
0.0 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec0h0h10h21.5h24h24h24h24h13.5h2h0h0h
Jan: 0h (Polar Night)
Feb: 0h (Polar Night)
Mar: 7:05 AM – 4:55 PM · 9h 51m
Apr: 1:21 AM – 10:39 PM · 21h 19m
May: 24h (Midnight Sun)
Jun: 24h (Midnight Sun)
Jul: 24h (Midnight Sun)
Aug: 24h (Midnight Sun)
Sep: 5:09 AM – 6:51 PM · 13h 41m
Oct: 10:53 AM – 1:07 PM · 2h 14m
Nov: 0h (Polar Night)
Dec: 0h (Polar Night)
Daylight Longest: 24h 00m · Shortest: 0h 00m

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