Frost Dates for Swanton, VT

Based on data from St Albans Radio weather station, 4 miles away

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 1
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 12
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 7
First Fall Frost October 6

Hard Freeze (28°F)

Last Spring Hard Freeze April 21
First Fall Hard Freeze October 23
44.92°N, -73.12°W © OpenStreetMap

Growing Season

164 Days May 1 to October 12

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 5a

Avg. annual minimum: −20 to −15°F (−29 to −26°C)

Learn more

Köppen Climate iThe Köppen climate classification system categorizes climates based on temperature and precipitation patterns.

Dfb Warm-Summer Continental

Warm summers and cold, snowy winters. A shorter growing season than hot-summer continental. Hardy vegetables, root crops, and cool-season greens do well. Season extension is valuable.

Köppen climate map

Temperature

0° 20° 40° 60° 80°
17°
High: 25°F
Avg: 17°F
Low: 8°F
Jan
20°
High: 29°F
Avg: 20°F
Low: 10°F
Feb
28°
High: 37°F
Avg: 28°F
Low: 20°F
Mar
43°
High: 52°F
Avg: 43°F
Low: 33°F
Apr
56°
High: 66°F
Avg: 56°F
Low: 46°F
May
65°
High: 74°F
Avg: 65°F
Low: 56°F
Jun
70°
High: 79°F
Avg: 70°F
Low: 61°F
Jul
68°
High: 77°F
Avg: 68°F
Low: 59°F
Aug
60°
High: 69°F
Avg: 60°F
Low: 51°F
Sep
48°
High: 56°F
Avg: 48°F
Low: 40°F
Oct
37°
High: 44°F
Avg: 37°F
Low: 30°F
Nov
25°
High: 32°F
Avg: 25°F
Low: 18°F
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 2" 4" 6"
3.0"
3.03"
Jan
3.2"
3.21"
Feb
4.5"
4.55"
Mar
5.0"
5.02"
Apr
4.8"
4.84"
May
5.7"
5.69"
Jun
6.0"
6.00"
Jul
5.6"
5.62"
Aug
5.7"
5.70"
Sep
6.0"
6.00"
Oct
4.5"
4.47"
Nov
3.4"
3.39"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h11.5h13.5h14.5h15.5h15h14h12.5h10.5h9.5h8.5h
Jan: 7:31 AM – 4:29 PM · 8h 58m
Feb: 6:54 AM – 5:06 PM · 10h 11m
Mar: 6:11 AM – 5:49 PM · 11h 38m
Apr: 5:22 AM – 6:38 PM · 13h 16m
May: 4:41 AM – 7:19 PM · 14h 38m
Jun: 4:18 AM – 7:42 PM · 15h 23m
Jul: 4:28 AM – 7:32 PM · 15h 05m
Aug: 5:03 AM – 6:57 PM · 13h 53m
Sep: 5:51 AM – 6:09 PM · 12h 18m
Oct: 6:39 AM – 5:21 PM · 10h 42m
Nov: 7:21 AM – 4:39 PM · 9h 18m
Dec: 7:42 AM – 4:18 PM · 8h 37m
Daylight Longest: 15h 25m · Shortest: 8h 35m

Nearby Stations

Philipsburg, QCMay 9 - October 4 Enosburg Falls 2, VT May 18 - September 30 Enosburg Falls, VT May 14 - October 1 Chazy, NYApril 30 - October 12 Frelighsburg, QC May 7 - October 10 S Hero, VTApril 28 - October 20

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