Frost Dates for Cascade Locks, OR

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. March 24
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 20
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 March 31
First Fall Frost November 11

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze February 24
First Fall Hard Freeze December 9
45.68°N, -121.87°W © OpenStreetMap

Growing Season

241 Days March 24 to November 20

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 8a

Learn more

Temperature

30° 50° 70° 90°
38°
High: 42°
Avg: 38°
Low: 33°
Jan
41°
High: 48°
Avg: 41°
Low: 34°
Feb
45°
High: 54°
Avg: 45°
Low: 36°
Mar
51°
High: 61°
Avg: 51°
Low: 41°
Apr
57°
High: 68°
Avg: 57°
Low: 47°
May
63°
High: 73°
Avg: 63°
Low: 52°
Jun
68°
High: 80°
Avg: 68°
Low: 56°
Jul
69°
High: 82°
Avg: 69°
Low: 57°
Aug
64°
High: 76°
Avg: 64°
Low: 51°
Sep
54°
High: 63°
Avg: 54°
Low: 45°
Oct
45°
High: 50°
Avg: 45°
Low: 39°
Nov
38°
High: 43°
Avg: 38°
Low: 33°
Dec
32°F
Avg High Avg Temp Avg Low Light Frost (32°F)

Precipitation

0" 3" 6" 9" 12"
10.7"
10.66"
Jan
9.0"
9.02"
Feb
9.6"
9.58"
Mar
7.3"
7.30"
Apr
5.5"
5.50"
May
4.4"
4.37"
Jun
2.9"
2.85"
Jul
3.5"
3.52"
Aug
5.4"
5.43"
Sep
8.1"
8.12"
Oct
11.0"
11.03"
Nov
12.0"
12.00"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h12h13h15h15h15h14h12h11h9h9h
Jan: 7:34 AM – 4:26 PM · 8h 52m
Feb: 6:56 AM – 5:04 PM · 10h 08m
Mar: 6:12 AM – 5:48 PM · 11h 37m
Apr: 5:21 AM – 6:39 PM · 13h 18m
May: 4:38 AM – 7:22 PM · 14h 43m
Jun: 4:15 AM – 7:45 PM · 15h 29m
Jul: 4:25 AM – 7:35 PM · 15h 10m
Aug: 5:02 AM – 6:58 PM · 13h 56m
Sep: 5:51 AM – 6:09 PM · 12h 18m
Oct: 6:40 AM – 5:20 PM · 10h 40m
Nov: 7:23 AM – 4:37 PM · 9h 13m
Dec: 7:45 AM – 4:15 PM · 8h 30m
Daylight Longest: 15h 31m · Shortest: 8h 29m

Nearby Stations

Bonneville Dam, OR March 14 - November 27 Carson Fish Hatchery, WA May 2 - October 9 Parkdale 1 Nne, OR May 13 - October 3 Skamania Fish Hatchery, WA April 29 - October 22 Hood Rvr Exp Stn, OR April 20 - October 13 Headworks Portland Wtr B, OR March 27 - November 18

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