Frost Dates for Rothamsted, United Kingdom

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 16
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. November 8
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 25
First Fall Frost November 1

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze March 15
First Fall Hard Freeze November 29
51.81°N, 0.36°W © OpenStreetMap

Growing Season

206 Days April 16 to November 8

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 9a

Learn more

Temperature

30° 50° 70°
40°
High: 45°
Avg: 40°
Low: 35°
Jan
40°
High: 46°
Avg: 40°
Low: 35°
Feb
44°
High: 51°
Avg: 44°
Low: 37°
Mar
48°
High: 56°
Avg: 48°
Low: 40°
Apr
54°
High: 62°
Avg: 54°
Low: 45°
May
59°
High: 67°
Avg: 59°
Low: 50°
Jun
63°
High: 72°
Avg: 63°
Low: 54°
Jul
63°
High: 71°
Avg: 63°
Low: 54°
Aug
58°
High: 65°
Avg: 58°
Low: 50°
Sep
52°
High: 58°
Avg: 52°
Low: 46°
Oct
45°
High: 50°
Avg: 45°
Low: 40°
Nov
41°
High: 45°
Avg: 41°
Low: 36°
Dec
32°F
Avg High Avg Temp Avg Low Light Frost (32°F)

Precipitation

0" 1" 2" 3" 3.2"
2.8"
2.80"
Jan
2.1"
2.10"
Feb
1.6"
1.60"
Mar
2.2"
2.20"
Apr
2.0"
2.00"
May
2.0"
2.00"
Jun
2.0"
2.00"
Jul
3.2"
3.20"
Aug
2.4"
2.40"
Sep
3.2"
3.20"
Oct
3.1"
3.10"
Nov
3.0"
3.00"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8h10h12h14h15h16h16h14h12h10h9h8h
Jan: 7:59 AM – 4:01 PM · 8h 03m
Feb: 7:10 AM – 4:50 PM · 9h 40m
Mar: 6:14 AM – 5:46 PM · 11h 31m
Apr: 5:11 AM – 6:49 PM · 13h 37m
May: 4:17 AM – 7:43 PM · 15h 25m
Jun: 3:47 AM – 8:13 PM · 16h 26m
Jul: 3:60 AM – 8:00 PM · 16h 01m
Aug: 4:47 AM – 7:13 PM · 14h 25m
Sep: 5:49 AM – 6:11 PM · 12h 23m
Oct: 6:50 AM – 5:10 PM · 10h 21m
Nov: 7:45 AM – 4:15 PM · 8h 30m
Dec: 8:13 AM – 3:47 PM · 7h 34m
Daylight Longest: 16h 28m · Shortest: 7h 32m

Nearby Stations

Writtle, United Kingdom April 28 - October 23 Hampstead, United Kingdom March 31 - November 18 Heathrow, United Kingdom March 27 - November 15 Cambridge (B. Gdns), United Kingdom April 20 - November 4 East Bergholt, United Kingdom May 1 - October 25 Wattisham, United Kingdom April 16 - November 4

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