Whatcom County Weather in April
Average highs run from 52°F on April 1 to 60°F on April 30, and lows from 34°F to 38°F. Normal precipitation for the month is 6.70 in over about 18 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
- 56°F
- Average low
- 36°F
- Precipitation
- 6.70 in
- Snowfall
- 0.2 in
- Record high
- 83°FApr 18, 2016
- Record low
- 24°FApr 20, 1951
- Chance of a freeze
- 93%
- Daylight
- 12 h 54 min to 14 h 34 min
- Cloud cover
- 73%
- Humidity
- 84%
- Dew point
- 36°F
- Wind
- 3.6 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 | 52°F | 34°F | 73°F 1987 | 26°F 1975 | 63% | 3% |
| Apr 2 | 52°F | 34°F | 71°F 2019 | 27°F 1953 | 63% | 3% |
| Apr 3 | 52°F | 34°F | 69°F 1951 | 27°F 1972 | 63% | 2% |
| Apr 4 | 52°F | 34°F | 69°F 1966 | 28°F 1955 | 62% | 2% |
| Apr 5 | 53°F | 34°F | 68°F 1966 | 29°F 1955 | 62% | 2% |
| Apr 6 | 53°F | 35°F | 74°F 2007 | 29°F 1967 | 62% | 2% |
| Apr 7 | 53°F | 35°F | 71°F 2016 | 26°F 1952 | 62% | 2% |
| Apr 8 | 53°F | 35°F | 68°F 2012 | 25°F 1952 | 61% | 2% |
| Apr 9 | 54°F | 35°F | 69°F 1959 | 28°F 1982 | 61% | 2% |
| Apr 10 | 54°F | 35°F | 70°F 1956 | 29°F 1972 | 61% | 1% |
| Apr 11 | 54°F | 35°F | 77°F 2004 | 29°F 2021 | 60% | 1% |
| Apr 12 | 55°F | 35°F | 73°F 1951 | 28°F 1971 | 60% | 1% |
| Apr 13 | 55°F | 35°F | 71°F 1980 | 29°F 1981 | 60% | 1% |
| Apr 14 | 55°F | 35°F | 74°F 1984 | 29°F 2001 | 59% | 1% |
| Apr 15 | 56°F | 36°F | 70°F 1951 | 29°F 2001 | 59% | 1% |
| Apr 16 | 56°F | 36°F | 78°F 1990 | 30°F 2022 | 58% | 1% |
| Apr 17 | 56°F | 36°F | 74°F 2021 | 30°F 1964 | 58% | 1% |
| Apr 18 | 57°F | 36°F | 83°F 2016 | 30°F 1955 | 57% | 1% |
| Apr 19 | 57°F | 36°F | 74°F 2016 | 28°F 1951 | 57% | 1% |
| Apr 20 | 57°F | 36°F | 78°F 2016 | 24°F 1951 | 56% | 1% |
| Apr 21 | 58°F | 37°F | 70°F 1959 | 28°F 1951 | 56% | 1% |
| Apr 22 | 58°F | 37°F | 71°F 1977 | 29°F 2008 | 55% | 1% |
| Apr 23 | 58°F | 37°F | 76°F 2005 | 30°F 1951 | 55% | 0% |
| Apr 24 | 59°F | 37°F | 73°F 1989 | 30°F 1951 | 54% | 0% |
| Apr 25 | 59°F | 37°F | 76°F 1992 | 29°F 1955 | 54% | 0% |
| Apr 26 | 59°F | 37°F | 75°F 2018 | 31°F 1969 | 54% | 0% |
| Apr 27 | 59°F | 38°F | 77°F 1987 | 29°F 1954 | 53% | 0% |
| Apr 28 | 60°F | 38°F | 73°F 1976 | 30°F 1955 | 53% | 0% |
| Apr 29 | 60°F | 38°F | 75°F 1976 | 29°F 1955 | 52% | 0% |
| Apr 30 | 60°F | 38°F | 76°F 1989 | 29°F 1954 | 52% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- April 1
- sunrise 6:45 AM, sunset 7:39 PM
- April 30
- sunrise 5:48 AM, sunset 8:22 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00458715 (Upper Baker Dam), 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.