Frost Dates for Jacksonville, OR

Based on data from Medford Rogue Vly AP 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. April 8
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 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 April 18
First Fall Frost October 23

Hard Freeze (28°F)

Last Spring Hard Freeze March 10
First Fall Hard Freeze November 13
42.31°N, -122.97°W © OpenStreetMap

Growing Season

204 Days April 8 to October 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 8b

Avg. annual minimum: 15 to 20°F (−9 to −7°C)

Learn more

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

Csa Hot-Summer Mediterranean

Hot, dry summers and mild, wet winters. Classic Mediterranean climate ideal for grapes, olives, tomatoes, and herbs. Summer irrigation is usually necessary.

Köppen climate map

Temperature

30° 50° 70° 90°
40°
High: 48°F
Avg: 40°F
Low: 33°F
Jan
44°
High: 54°F
Avg: 44°F
Low: 34°F
Feb
48°
High: 59°F
Avg: 48°F
Low: 37°F
Mar
53°
High: 65°F
Avg: 53°F
Low: 41°F
Apr
60°
High: 74°F
Avg: 60°F
Low: 47°F
May
67°
High: 82°F
Avg: 67°F
Low: 52°F
Jun
75°
High: 92°F
Avg: 75°F
Low: 59°F
Jul
75°
High: 91°F
Avg: 75°F
Low: 58°F
Aug
68°
High: 84°F
Avg: 68°F
Low: 51°F
Sep
56°
High: 70°F
Avg: 56°F
Low: 42°F
Oct
45°
High: 54°F
Avg: 45°F
Low: 36°F
Nov
39°
High: 46°F
Avg: 39°F
Low: 33°F
Dec
32°F
Avg High Avg Temp Avg Low Light Frost (32°F)

Precipitation

0" 1" 2" 3" 3.5"
3.5"
3.50"
Jan
2.4"
2.38"
Feb
2.5"
2.48"
Mar
2.4"
2.40"
Apr
2.7"
2.67"
May
2.2"
2.23"
Jun
0.0"
0.00"
Jul
0.0"
0.00"
Aug
1.0"
1.04"
Sep
2.6"
2.65"
Oct
3.0"
3.00"
Nov
3.4"
3.37"
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 20m
Mar: 6:10 AM – 5:50 PM · 11h 39m
Apr: 5:25 AM – 6:35 PM · 13h 10m
May: 4:48 AM – 7:12 PM · 14h 25m
Jun: 4:27 AM – 7:33 PM · 15h 05m
Jul: 4:36 AM – 7:24 PM · 14h 49m
Aug: 5:08 AM – 6:52 PM · 13h 43m
Sep: 5:52 AM – 6:08 PM · 12h 16m
Oct: 6:36 AM – 5:24 PM · 10h 49m
Nov: 7:14 AM – 4:46 PM · 9h 32m
Dec: 7:33 AM – 4:27 PM · 8h 55m
Daylight Longest: 15h 07m · Shortest: 8h 54m

Nearby Stations

Ruch, ORMay 4 - October 13 Ashland, ORMay 6 - October 8 Lost Creek Dam, OR April 29 - October 17 Grants Pass, OR April 8 - October 28 Howard Prairie Dam, OR June 8 - September 24 Sexton Summit, OR May 16 - October 30

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