Frost Dates for Houston, BC

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. May 31
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. September 8
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 8
First Fall Frost August 30

Hard Freeze (−2°C)

Last Spring Hard Freeze May 6
First Fall Hard Freeze September 30
54.40°N, -126.67°W © OpenStreetMap

Growing Season

100 Days May 31 to September 8

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 4b

Avg. annual minimum: −25 to −20°F (−32 to −29°C)

Learn more

Köppen Climate iThe 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.

Köppen climate map

Temperature

-15° -5° 5° 15° 25°
-7°
High: -3°C
Avg: -7°C
Low: -11°C
Jan
-5°
High: 1°C
Avg: -5°C
Low: -10°C
Feb
0°
High: 5°C
Avg: 0°C
Low: -6°C
Mar
5°
High: 11°C
Avg: 5°C
Low: -1°C
Apr
10°
High: 17°C
Avg: 10°C
Low: 3°C
May
13°
High: 20°C
Avg: 13°C
Low: 7°C
Jun
16°
High: 23°C
Avg: 16°C
Low: 9°C
Jul
15°
High: 22°C
Avg: 15°C
Low: 8°C
Aug
11°
High: 17°C
Avg: 11°C
Low: 4°C
Sep
5°
High: 9°C
Avg: 5°C
Low: 0°C
Oct
-2°
High: 2°C
Avg: -2°C
Low: -5°C
Nov
-7°
High: -3°C
Avg: -7°C
Low: -10°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 20 mm 40 mm
25 mm
25.4 mm
Jan
8 mm
7.6 mm
Feb
0 mm
0.0 mm
Mar
3 mm
2.5 mm
Apr
36 mm
35.6 mm
May
48 mm
48.3 mm
Jun
33 mm
33.0 mm
Jul
23 mm
22.9 mm
Aug
23 mm
22.9 mm
Sep
46 mm
45.7 mm
Oct
28 mm
27.9 mm
Nov
15 mm
15.2 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec7.5h9.5h11.5h14h16h17h16.5h14.5h12.5h10h8h7h
Jan: 8:12 AM – 3:48 PM · 7h 36m
Feb: 7:17 AM – 4:43 PM · 9h 26m
Mar: 6:16 AM – 5:44 PM · 11h 28m
Apr: 5:06 AM – 6:54 PM · 13h 47m
May: 4:06 AM – 7:54 PM · 15h 47m
Jun: 3:32 AM – 8:28 PM · 16h 56m
Jul: 3:46 AM – 8:14 PM · 16h 27m
Aug: 4:40 AM – 7:20 PM · 14h 40m
Sep: 5:48 AM – 6:12 PM · 12h 25m
Oct: 6:55 AM – 5:05 PM · 10h 11m
Nov: 7:56 AM – 4:04 PM · 8h 08m
Dec: 8:28 AM – 3:32 PM · 7h 04m
Daylight Longest: 16h 58m · Shortest: 7h 02m

Nearby Stations

Burns Lake Decker Lake, BC June 21 - July 26 Topley Landing, BC May 24 - September 19 Smithers A, BC May 27 - September 13 Smithers, BCMay 29 - September 12 Babine Lake Pinkut Creek, BC May 19 - September 22 Ootsa L Skins L Spillway, BC June 5 - September 8

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