Frost Dates for Hampstead, NH

Based on data from W Hampstead weather station, 3 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. April 30
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 11
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 5
First Fall Frost October 5

Hard Freeze (28°F)

Last Spring Hard Freeze April 18
First Fall Hard Freeze October 24
42.87°N, -71.18°W © OpenStreetMap

Growing Season

164 Days April 30 to October 11

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.

Dfa Hot-Summer Continental

Hot summers and cold winters with year-round precipitation. Moderate growing season supports warm-season crops like tomatoes, peppers, and corn. Winter protection extends the harvest.

Köppen climate map

Temperature

10° 30° 50° 70° 90°
24°
High: 34°F
Avg: 24°F
Low: 15°F
Jan
27°
High: 37°F
Avg: 27°F
Low: 16°F
Feb
34°
High: 45°F
Avg: 34°F
Low: 24°F
Mar
46°
High: 57°F
Avg: 46°F
Low: 34°F
Apr
56°
High: 68°F
Avg: 56°F
Low: 44°F
May
65°
High: 76°F
Avg: 65°F
Low: 54°F
Jun
71°
High: 82°F
Avg: 71°F
Low: 60°F
Jul
69°
High: 80°F
Avg: 69°F
Low: 58°F
Aug
62°
High: 73°F
Avg: 62°F
Low: 51°F
Sep
50°
High: 61°F
Avg: 50°F
Low: 39°F
Oct
40°
High: 49°F
Avg: 40°F
Low: 30°F
Nov
30°
High: 39°F
Avg: 30°F
Low: 21°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" 7.0"
6.0"
6.01"
Jan
7.0"
7.02"
Feb
6.2"
6.18"
Mar
4.4"
4.36"
Apr
4.0"
4.03"
May
3.6"
3.64"
Jun
4.4"
4.36"
Jul
4.7"
4.66"
Aug
4.3"
4.25"
Sep
4.5"
4.46"
Oct
5.1"
5.06"
Nov
6.1"
6.13"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10.5h11.5h13h14.5h15h15h14h12.5h11h9.5h9h
Jan: 7:25 AM – 4:35 PM · 9h 10m
Feb: 6:51 AM – 5:09 PM · 10h 19m
Mar: 6:10 AM – 5:50 PM · 11h 39m
Apr: 5:25 AM – 6:35 PM · 13h 11m
May: 4:46 AM – 7:14 PM · 14h 28m
Jun: 4:26 AM – 7:34 PM · 15h 09m
Jul: 4:34 AM – 7:26 PM · 14h 52m
Aug: 5:07 AM – 6:53 PM · 13h 45m
Sep: 5:52 AM – 6:08 PM · 12h 16m
Oct: 6:36 AM – 5:24 PM · 10h 48m
Nov: 7:15 AM – 4:45 PM · 9h 29m
Dec: 7:35 AM – 4:25 PM · 8h 51m
Daylight Longest: 15h 10m · Shortest: 8h 50m

Nearby Stations

Epping, NHMay 7 - October 4 Massabesic Lake, NH April 30 - October 11 Manchester AP, NH April 21 - October 19 Haverhill, MAMay 1 - October 12 Groveland, MAMay 3 - October 8 Hudson 1 Sse, NHMay 3 - October 8

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