Sumas Weather in April
Average highs run from 56°F on April 1 to 63°F on April 30, and lows from 38°F to 41°F. Normal precipitation for the month is 3.97 in over about 16 wet days.
April day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
April at a glance
- Average high
- 59°F
- Average low
- 39°F
- Precipitation
- 3.97 in
- Snowfall
- 0.1 in
- Record high
- 83°FApr 18, 2016
- Record low
- 24°FApr 20, 1951
- Chance of a freeze
- 80%
- Daylight
- 12 h 54 min to 14 h 34 min
- Cloud cover
- 75%
- Humidity
- 81%
- Dew point
- 41°F
- Wind
- 4.3 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.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Apr 1 | 56°F | 38°F | 73°F 1987 | 26°F 1975 | 57% | 1% |
| Apr 2 | 56°F | 38°F | 71°F 2019 | 27°F 1953 | 57% | 1% |
| Apr 3 | 56°F | 38°F | 69°F 1951 | 27°F 1972 | 57% | 1% |
| Apr 4 | 56°F | 38°F | 69°F 1966 | 28°F 1955 | 57% | 1% |
| Apr 5 | 57°F | 38°F | 68°F 1966 | 29°F 1955 | 56% | 1% |
| Apr 6 | 57°F | 38°F | 74°F 2007 | 29°F 1967 | 56% | 1% |
| Apr 7 | 57°F | 38°F | 71°F 2016 | 26°F 1952 | 56% | 1% |
| Apr 8 | 57°F | 38°F | 68°F 2012 | 25°F 1952 | 56% | 1% |
| Apr 9 | 58°F | 38°F | 69°F 1959 | 28°F 1982 | 55% | 1% |
| Apr 10 | 58°F | 39°F | 70°F 1956 | 29°F 1972 | 55% | 1% |
| Apr 11 | 58°F | 39°F | 77°F 2004 | 29°F 2021 | 55% | 0% |
| Apr 12 | 58°F | 39°F | 73°F 1951 | 28°F 1971 | 54% | 0% |
| Apr 13 | 58°F | 39°F | 71°F 1980 | 29°F 1981 | 54% | 0% |
| Apr 14 | 59°F | 39°F | 74°F 1984 | 29°F 2001 | 53% | 0% |
| Apr 15 | 59°F | 39°F | 70°F 1951 | 29°F 2001 | 53% | 0% |
| Apr 16 | 59°F | 39°F | 78°F 1990 | 30°F 2022 | 52% | 0% |
| Apr 17 | 59°F | 39°F | 74°F 2021 | 30°F 1964 | 52% | 0% |
| Apr 18 | 60°F | 39°F | 83°F 2016 | 30°F 1955 | 51% | 0% |
| Apr 19 | 60°F | 40°F | 74°F 2016 | 28°F 1951 | 51% | 0% |
| Apr 20 | 60°F | 40°F | 78°F 2016 | 24°F 1951 | 50% | 0% |
| Apr 21 | 60°F | 40°F | 70°F 1959 | 28°F 1951 | 50% | 0% |
| Apr 22 | 61°F | 40°F | 71°F 1977 | 29°F 2008 | 49% | 0% |
| Apr 23 | 61°F | 40°F | 76°F 2005 | 30°F 1951 | 49% | 0% |
| Apr 24 | 61°F | 40°F | 73°F 1989 | 30°F 1951 | 48% | 0% |
| Apr 25 | 62°F | 40°F | 76°F 1992 | 29°F 1955 | 48% | 0% |
| Apr 26 | 62°F | 41°F | 75°F 2018 | 31°F 1969 | 47% | 0% |
| Apr 27 | 62°F | 41°F | 77°F 1987 | 29°F 1954 | 47% | 0% |
| Apr 28 | 62°F | 41°F | 73°F 1976 | 30°F 1955 | 46% | 0% |
| Apr 29 | 63°F | 41°F | 75°F 1976 | 29°F 1955 | 46% | 0% |
| Apr 30 | 63°F | 41°F | 76°F 1989 | 29°F 1954 | 45% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- April 1
- sunrise 6:46 AM, sunset 7:40 PM
- April 30
- sunrise 5:50 AM, sunset 8:24 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00451484 (Clearbrook), public domain. Records: NOAA GHCN-Daily, station USW00024217, 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.