Tri-Cities climate

Tri-Cities Weather in April

NOAA 1991-2020 normals for Pasco Tri Cities AP, 6.6 km from Tri-Cities

Average highs run from 63°F on April 1 to 72°F on April 30, and lows from 37°F to 41°F. Normal precipitation for the month is 0.66 in over about 7 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 Tri-Cities, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

April at a glance

Average high
67°F
Average low
38°F
Precipitation
0.66 in
Record high
94°FApr 30, 1998
Record low
21°FApr 1, 2008
Chance of a freeze
96%
Daylight
12 h 50 min to 14 h 20 min
Cloud cover
62%
Humidity
62%
Dew point
37°F
Wind
8.7 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 163°F37°F78°F 201621°F 200825%0%
Apr 263°F37°F82°F 202422°F 199925%0%
Apr 363°F37°F76°F 200022°F 200725%0%
Apr 463°F37°F74°F 200424°F 202025%0%
Apr 564°F37°F73°F 202625°F 201525%0%
Apr 664°F37°F79°F 202626°F 199924%0%
Apr 764°F37°F82°F 201625°F 201224%0%
Apr 864°F37°F81°F 201425°F 199824%0%
Apr 965°F37°F82°F 201627°F 200824%0%
Apr 1065°F38°F81°F 202024°F 201024%0%
Apr 1165°F38°F78°F 200423°F 202124%0%
Apr 1266°F38°F82°F 200021°F 202123%0%
Apr 1366°F38°F83°F 200823°F 202023%0%
Apr 1466°F38°F83°F 202427°F 201423%0%
Apr 1567°F38°F77°F 202125°F 199923%0%
Apr 1667°F38°F79°F 202128°F 201523%0%
Apr 1767°F38°F80°F 199922°F 201322%0%
Apr 1868°F39°F87°F 202128°F 202422%0%
Apr 1968°F39°F85°F 201628°F 201122%0%
Apr 2068°F39°F89°F 201625°F 201122%0%
Apr 2169°F39°F86°F 200929°F 200822%0%
Apr 2269°F39°F83°F 201228°F 201122%0%
Apr 2370°F39°F91°F 201227°F 201122%0%
Apr 2470°F40°F84°F 194626°F 200221%0%
Apr 2570°F40°F92°F 194629°F 202621%0%
Apr 2671°F40°F86°F 201826°F 200821%0%
Apr 2771°F40°F88°F 201833°F 199921%0%
Apr 2871°F41°F86°F 201531°F 194521%0%
Apr 2972°F41°F89°F 202131°F 201421%0%
Apr 3072°F41°F94°F 199829°F 201321%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Tri-Cities, in percent, and of at least 0.1 inch of snowfall.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

April 1
sunrise 6:36 AM, sunset 7:26 PM
April 30
sunrise 5:44 AM, sunset 8:04 PM

Every day of April: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00024163 (Pasco Tri Cities AP), public domain. Records: NOAA GHCN-Daily, station USW00024163, 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.