Frost Dates for Andover, NH

Based on data from Salisbury weather station, 7 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 14
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 29
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 20
First Fall Frost September 23

Hard Freeze (28°F)

Last Spring Hard Freeze April 30
First Fall Hard Freeze October 9
43.44°N, -71.82°W © OpenStreetMap

Growing Season

138 Days May 14 to September 29

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 5b

Avg. annual minimum: −15 to −10°F (−26 to −23°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

10° 30° 50° 70° 90°
22°
High: 31°F
Avg: 22°F
Low: 13°F
Jan
25°
High: 34°F
Avg: 25°F
Low: 15°F
Feb
32°
High: 42°F
Avg: 32°F
Low: 22°F
Mar
43°
High: 55°F
Avg: 43°F
Low: 31°F
Apr
54°
High: 67°F
Avg: 54°F
Low: 41°F
May
63°
High: 75°F
Avg: 63°F
Low: 51°F
Jun
68°
High: 80°F
Avg: 68°F
Low: 57°F
Jul
67°
High: 79°F
Avg: 67°F
Low: 55°F
Aug
59°
High: 71°F
Avg: 59°F
Low: 46°F
Sep
47°
High: 58°F
Avg: 47°F
Low: 36°F
Oct
38°
High: 47°F
Avg: 38°F
Low: 29°F
Nov
28°
High: 36°F
Avg: 28°F
Low: 20°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" 6.0"
5.0"
5.04"
Jan
4.3"
4.33"
Feb
5.4"
5.37"
Mar
6.0"
6.04"
Apr
5.6"
5.58"
May
5.2"
5.22"
Jun
5.7"
5.66"
Jul
5.0"
4.99"
Aug
5.0"
5.05"
Sep
4.6"
4.63"
Oct
5.4"
5.38"
Nov
5.5"
5.49"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10.5h11.5h13h14.5h15h15h14h12.5h11h9.5h9h
Jan: 7:26 AM – 4:34 PM · 9h 07m
Feb: 6:52 AM – 5:08 PM · 10h 17m
Mar: 6:11 AM – 5:49 PM · 11h 39m
Apr: 5:24 AM – 6:36 PM · 13h 12m
May: 4:45 AM – 7:15 PM · 14h 30m
Jun: 4:24 AM – 7:36 PM · 15h 12m
Jul: 4:33 AM – 7:27 PM · 14h 55m
Aug: 5:06 AM – 6:54 PM · 13h 47m
Sep: 5:52 AM – 6:08 PM · 12h 17m
Oct: 6:37 AM – 5:23 PM · 10h 46m
Nov: 7:17 AM – 4:43 PM · 9h 27m
Dec: 7:36 AM – 4:24 PM · 8h 48m
Daylight Longest: 15h 13m · Shortest: 8h 47m

Nearby Stations

Franklin Falls Dam, NH May 7 - October 3 Hopkinton Lake, NH May 6 - October 1 Bradford 2, NH May 15 - September 27 Concord Muni AP, NH May 8 - October 3 Mt Sunapee, NHMay 2 - October 9 Weare 2 Ne, NHMay 9 - October 5

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