Frost Dates for Brighton, MA

Based on data from Jamaica Plain 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. April 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 23
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 April 24
First Fall Frost October 16

Hard Freeze (28°F)

Last Spring Hard Freeze April 5
First Fall Hard Freeze November 3
42.35°N, -71.16°W © OpenStreetMap

Growing Season

187 Days April 19 to October 23

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 6b

Avg. annual minimum: −5 to 0°F (−21 to −18°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°
28°
High: 37°F
Avg: 28°F
Low: 19°F
Jan
30°
High: 40°F
Avg: 30°F
Low: 21°F
Feb
38°
High: 47°F
Avg: 38°F
Low: 28°F
Mar
49°
High: 59°F
Avg: 49°F
Low: 38°F
Apr
59°
High: 69°F
Avg: 59°F
Low: 48°F
May
68°
High: 79°F
Avg: 68°F
Low: 58°F
Jun
74°
High: 85°F
Avg: 74°F
Low: 64°F
Jul
73°
High: 83°F
Avg: 73°F
Low: 63°F
Aug
65°
High: 76°F
Avg: 65°F
Low: 55°F
Sep
53°
High: 64°F
Avg: 53°F
Low: 43°F
Oct
43°
High: 53°F
Avg: 43°F
Low: 34°F
Nov
34°
High: 42°F
Avg: 34°F
Low: 26°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" 6.3"
5.1"
5.08"
Jan
4.8"
4.81"
Feb
5.7"
5.68"
Mar
5.1"
5.10"
Apr
4.7"
4.65"
May
4.5"
4.50"
Jun
4.7"
4.74"
Jul
5.7"
5.72"
Aug
5.6"
5.64"
Sep
5.7"
5.72"
Oct
6.0"
6.01"
Nov
6.3"
6.33"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10.5h11.5h13h14.5h15h15h13.5h12.5h11h9.5h9h
Jan: 7:23 AM – 4:37 PM · 9h 14m
Feb: 6:50 AM – 5:10 PM · 10h 21m
Mar: 6:10 AM – 5:50 PM · 11h 39m
Apr: 5:25 AM – 6:35 PM · 13h 09m
May: 4:48 AM – 7:12 PM · 14h 24m
Jun: 4:28 AM – 7:32 PM · 15h 05m
Jul: 4:36 AM – 7:24 PM · 14h 48m
Aug: 5:08 AM – 6:52 PM · 13h 43m
Sep: 5:52 AM – 6:08 PM · 12h 16m
Oct: 6:35 AM – 5:25 PM · 10h 49m
Nov: 7:14 AM – 4:46 PM · 9h 33m
Dec: 7:32 AM – 4:28 PM · 8h 55m
Daylight Longest: 15h 06m · Shortest: 8h 54m

Nearby Stations

Blue Hill, MA April 19 - October 24 Blue Hill Coop, MA April 18 - October 26 Boston Logan Intl AP, MA April 4 - November 9 Norwood Mem AP, MA April 25 - October 9 Natick, MAApril 26 - October 12 Walpole 2, MA April 27 - October 14

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