Frost Dates for Roberval A, Canada

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 19
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. October 2
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 May 24
First Fall Frost September 29

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze May 10
First Fall Hard Freeze October 14
48.52°N, -72.27°W © OpenStreetMap

Growing Season

136 Days May 19 to October 2

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 4a

Learn more

Temperature

-10° 20° 50° 80°
4°
High: 13°
Avg: 4°
Low: -6°
Jan
9°
High: 18°
Avg: 9°
Low: -1°
Feb
20°
High: 30°
Avg: 20°
Low: 11°
Mar
36°
High: 45°
Avg: 36°
Low: 26°
Apr
50°
High: 61°
Avg: 50°
Low: 39°
May
61°
High: 71°
Avg: 61°
Low: 50°
Jun
65°
High: 74°
Avg: 65°
Low: 56°
Jul
63°
High: 72°
Avg: 63°
Low: 54°
Aug
55°
High: 64°
Avg: 55°
Low: 45°
Sep
43°
High: 50°
Avg: 43°
Low: 35°
Oct
30°
High: 36°
Avg: 30°
Low: 23°
Nov
14°
High: 22°
Avg: 14°
Low: 6°
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 2" 4" 4.6"
2.7"
2.70"
Jan
1.6"
1.60"
Feb
2.1"
2.10"
Mar
2.7"
2.70"
Apr
2.8"
2.80"
May
3.4"
3.40"
Jun
4.6"
4.60"
Jul
4.0"
4.00"
Aug
4.1"
4.10"
Sep
3.1"
3.10"
Oct
2.9"
2.90"
Nov
2.7"
2.70"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h12h13h15h16h16h14h12h11h9h8h
Jan: 7:44 AM – 4:16 PM · 8h 31m
Feb: 7:02 AM – 4:58 PM · 9h 56m
Mar: 6:13 AM – 5:47 PM · 11h 34m
Apr: 5:17 AM – 6:43 PM · 13h 26m
May: 4:29 AM – 7:31 PM · 15h 01m
Jun: 4:03 AM – 7:57 PM · 15h 53m
Jul: 4:14 AM – 7:46 PM · 15h 32m
Aug: 4:56 AM – 7:04 PM · 14h 09m
Sep: 5:50 AM – 6:10 PM · 12h 20m
Oct: 6:44 AM – 5:16 PM · 10h 32m
Nov: 7:32 AM – 4:28 PM · 8h 55m
Dec: 7:57 AM – 4:03 PM · 8h 06m
Daylight Longest: 15h 55m · Shortest: 8h 05m

Nearby Stations

St Prime, Canada May 25 - September 15 Lac Bouchette, Canada June 4 - September 11 Lac Ste Croix, Canada May 22 - September 23 Mistook, Canada May 17 - September 28 Normandin, Canada May 26 - September 14 St Ambroise, Canada June 8 - September 7

Plan Your Garden with Planter

Now that you know your frost dates, use Planter to plan your veggie garden! Planter is an easy drag-and-drop garden planner with personalized planting schedules.

Try Planter For Free

Available everywhere: iOS, Android, web, and more!

Planter app garden planner preview