Cascade Locks climate

Cascade Locks Weather in April

NOAA 1991-2020 normals for Bonneville Dam, 6.1 km from Cascade Locks

Average highs run from 56°F on April 1 to 63°F on April 30, and lows from 40°F to 45°F. Normal precipitation for the month is 6.47 in over about 19 wet days.

April day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Cascade Locks, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

April at a glance

Average high
59°F
Average low
42°F
Precipitation
6.47 in
Record high
91°FApr 27, 1926
Record low
22°FApr 4, 2009
Chance of a freeze
14%
Daylight
12 h 49 min to 14 h 17 min
Cloud cover
66%
Humidity
84%
Dew point
39°F
Wind
4.5 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Apr 156°F40°F80°F 191123°F 193665%0%
Apr 256°F40°F78°F 199225°F 197665%0%
Apr 357°F40°F79°F 199223°F 191865%0%
Apr 457°F41°F80°F 200022°F 200965%0%
Apr 557°F41°F78°F 195225°F 191165%0%
Apr 657°F41°F79°F 193426°F 192165%0%
Apr 757°F41°F83°F 197725°F 192365%0%
Apr 858°F41°F84°F 197725°F 192364%0%
Apr 958°F41°F84°F 201628°F 190064%0%
Apr 1058°F41°F86°F 190427°F 193364%0%
Apr 1158°F42°F81°F 190428°F 191964%0%
Apr 1258°F42°F84°F 190427°F 192263%0%
Apr 1359°F42°F84°F 194725°F 196863%0%
Apr 1459°F42°F90°F 194724°F 191163%0%
Apr 1559°F42°F83°F 192627°F 196762%0%
Apr 1659°F42°F82°F 192628°F 192162%0%
Apr 1760°F42°F85°F 189725°F 196461%0%
Apr 1860°F43°F81°F 199425°F 190961%0%
Apr 1960°F43°F86°F 193427°F 196660%0%
Apr 2060°F43°F87°F 190624°F 192759%0%
Apr 2161°F43°F86°F 200924°F 192059%0%
Apr 2261°F43°F85°F 193628°F 197258%0%
Apr 2361°F43°F87°F 191028°F 190458%0%
Apr 2462°F43°F89°F 191027°F 195057%0%
Apr 2562°F44°F86°F 197729°F 192157%0%
Apr 2662°F44°F89°F 192626°F 192456%0%
Apr 2762°F44°F91°F 192628°F 194856%0%
Apr 2863°F44°F91°F 192630°F 195555%0%
Apr 2963°F44°F86°F 190028°F 195255%0%
Apr 3063°F45°F88°F 190029°F 192154%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Cascade Locks, in percent, and of at least 0.1 inch of snowfall.0204060801102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

April 1
sunrise 6:47 AM, sunset 7:36 PM
April 30
sunrise 5:57 AM, sunset 8:14 PM

Every day of April: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00350897 (Bonneville Dam), public domain. Records: NOAA GHCN-Daily, station USC00354003, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.