Frost Dates for STYKKISHOLMUR, Iceland
Elevation: 14 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.
May 12
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.
October 8
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
May 18
First Fall Frost
October 1
Hard Freeze (−2°C)
Last Spring Hard Freeze
April 25
First Fall Hard Freeze
October 27
Growing Season
149 Days
May 12 to October 8
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 7b
Avg. annual minimum: −15 to −12°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
-5°
0°
5°
10°
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 | 1° | -1° | -3° |
| February | 1° | -1° | -3° |
| March | 2° | 0° | -2° |
| April | 4° | 2° | 0° |
| May | 8° | 5° | 3° |
| June | 11° | 9° | 7° |
| July | 13° | 11° | 9° |
| August | 12° | 10° | 8° |
| September | 10° | 8° | 6° |
| October | 6° | 4° | 2° |
| November | 3° | 1° | -1° |
| December | 1° | -1° | -3° |
Precipitation
0 mm
50 mm
100 mm
Precipitation table
| Month | Precipitation |
|---|---|
| January | 109 |
| February | 112 |
| March | 102 |
| April | 79 |
| May | 79 |
| June | 66 |
| July | 66 |
| August | 76 |
| September | 102 |
| October | 102 |
| November | 86 |
| December | 104 |
Sunrise / Sunset
Daylight
Longest: 21h 12m · Shortest: 2h 49m
Sunrise and sunset table
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 9:48 AM | 2:12 PM | 4h 25m |
| February | 8:02 AM | 3:58 PM | 7h 56m |
| March | 6:24 AM | 5:36 PM | 11h 11m |
| April | 4:36 AM | 7:24 PM | 14h 47m |
| May | 2:52 AM | 9:08 PM | 18h 17m |
| June | 1:28 AM | 10:32 PM | 21h 04m |
| July | 2:08 AM | 9:52 PM | 19h 44m |
| August | 3:53 AM | 8:07 PM | 16h 15m |
| September | 5:41 AM | 6:19 PM | 12h 38m |
| October | 7:25 AM | 4:35 PM | 9h 09m |
| November | 9:13 AM | 2:47 PM | 5h 33m |
| December | 10:33 AM | 1:27 PM | 2h 55m |
Nearby Stations
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