Newcastle climate

Newcastle Weather in April

NOAA 1991-2020 normals for Renton Muni AP, 6.7 km from Newcastle

Average highs run from 57°F on April 1 to 63°F on April 30, and lows from 41°F to 45°F. Normal precipitation for the month is 2.83 in over about 14 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 Newcastle, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

April at a glance

Average high
60°F
Average low
43°F
Precipitation
2.83 in
Record high
87°FApr 18, 2016
Record low
31°FApr 2, 2008
Chance of a freeze
10%
Daylight
12 h 52 min to 14 h 27 min
Cloud cover
70%
Humidity
83%
Dew point
39°F
Wind
4.0 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 157°F41°F70°F 201632°F 200854%
Apr 257°F42°F70°F 202431°F 200853%
Apr 357°F42°F74°F 200431°F 200753%
Apr 457°F42°F65°F 200233°F 200953%
Apr 557°F42°F72°F 202534°F 202152%
Apr 658°F42°F78°F 200734°F 199952%
Apr 758°F42°F77°F 201633°F 201151%
Apr 858°F42°F75°F 201632°F 201151%
Apr 958°F42°F68°F 200434°F 200851%
Apr 1058°F42°F75°F 200433°F 201050%
Apr 1158°F42°F82°F 200431°F 202150%
Apr 1259°F43°F80°F 200833°F 202050%
Apr 1359°F43°F68°F 201433°F 202049%0%
Apr 1459°F43°F70°F 201434°F 199949%0%
Apr 1559°F43°F76°F 199935°F 200948%0%
Apr 1659°F43°F83°F 199936°F 201348%0%
Apr 1760°F43°F78°F 201635°F 202447%0%
Apr 1860°F43°F87°F 201636°F 202447%0%
Apr 1960°F43°F81°F 201635°F 200846%0%
Apr 2060°F44°F81°F 201633°F 200846%0%
Apr 2161°F44°F74°F 201636°F 200845%0%
Apr 2261°F44°F79°F 200535°F 201345%0%
Apr 2361°F44°F72°F 202435°F 201144%0%
Apr 2461°F44°F80°F 201835°F 200044%0%
Apr 2562°F44°F75°F 201839°F 200243%0%
Apr 2662°F45°F82°F 201834°F 200843%0%
Apr 2762°F45°F76°F 201536°F 201143%0%
Apr 2862°F45°F79°F 202336°F 201942%0%
Apr 2963°F45°F79°F 202338°F 200642%0%
Apr 3063°F45°F82°F 201436°F 200641%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Newcastle, in percent, and of at least 0.1 inch of snowfall.02040601102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

April 1
sunrise 6:47 AM, sunset 7:39 PM
April 30
sunrise 5:53 AM, sunset 8:20 PM

Every day of April: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00094248 (Renton Muni AP), public domain. Records: NOAA GHCN-Daily, station USW00094248, 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.