Lake Oswego Weather in April
Average highs run from 58°F on April 1 to 64°F on April 30, and lows from 42°F to 47°F. Normal precipitation for the month is 3.63 in over about 17 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
- 61°F
- Average low
- 44°F
- Precipitation
- 3.63 in
- Record high
- 90°FApr 30, 1998
- Record low
- 29°FApr 4, 1955
- Chance of a freeze
- 2%
- Daylight
- 12 h 48 min to 14 h 16 min
- Cloud cover
- 75%
- Humidity
- 84%
- Dew point
- 42°F
- Wind
- 4.9 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 | 58°F | 42°F | 79°F 1987 | 30°F 1971 | 57% | 0% |
| Apr 2 | 58°F | 42°F | 79°F 1944 | 30°F 1972 | 57% | 0% |
| Apr 3 | 58°F | 43°F | 77°F 2004 | 30°F 1964 | 57% | 0% |
| Apr 4 | 58°F | 43°F | 76°F 2002 | 29°F 1955 | 57% | 0% |
| Apr 5 | 59°F | 43°F | 79°F 2026 | 30°F 1955 | 57% | 0% |
| Apr 6 | 59°F | 43°F | 79°F 2026 | 30°F 1956 | 57% | 0% |
| Apr 7 | 59°F | 43°F | 85°F 2016 | 31°F 2012 | 57% | 0% |
| Apr 8 | 59°F | 43°F | 83°F 2016 | 31°F 1975 | 56% | 0% |
| Apr 9 | 59°F | 43°F | 79°F 1985 | 33°F 1982 | 56% | 0% |
| Apr 10 | 59°F | 43°F | 79°F 2004 | 31°F 1954 | 56% | 0% |
| Apr 11 | 60°F | 43°F | 81°F 2004 | 32°F 2021 | 56% | 0% |
| Apr 12 | 60°F | 44°F | 82°F 1940 | 30°F 1970 | 56% | 0% |
| Apr 13 | 60°F | 44°F | 82°F 1943 | 30°F 1968 | 55% | 0% |
| Apr 14 | 60°F | 44°F | 84°F 1947 | 32°F 1977 | 55% | 0% |
| Apr 15 | 60°F | 44°F | 82°F 1990 | 31°F 1967 | 54% | 0% |
| Apr 16 | 61°F | 44°F | 81°F 1947 | 32°F 1964 | 54% | 0% |
| Apr 17 | 61°F | 44°F | 84°F 1939 | 31°F 1977 | 54% | 0% |
| Apr 18 | 61°F | 44°F | 87°F 2016 | 30°F 1964 | 53% | 0% |
| Apr 19 | 61°F | 45°F | 89°F 2016 | 31°F 1982 | 53% | 0% |
| Apr 20 | 62°F | 45°F | 86°F 1939 | 33°F 1975 | 52% | 0% |
| Apr 21 | 62°F | 45°F | 82°F 2009 | 29°F 1951 | 52% | 0% |
| Apr 22 | 62°F | 45°F | 82°F 2012 | 30°F 1972 | 51% | 0% |
| Apr 23 | 62°F | 45°F | 82°F 2012 | 34°F 1954 | 51% | 0% |
| Apr 24 | 63°F | 46°F | 81°F 2025 | 32°F 1950 | 50% | 0% |
| Apr 25 | 63°F | 46°F | 84°F 2018 | 32°F 1955 | 50% | 0% |
| Apr 26 | 63°F | 46°F | 86°F 1947 | 34°F 1948 | 50% | 0% |
| Apr 27 | 63°F | 46°F | 86°F 1987 | 32°F 1948 | 49% | 0% |
| Apr 28 | 64°F | 46°F | 88°F 2023 | 34°F 1955 | 48% | 0% |
| Apr 29 | 64°F | 46°F | 87°F 1957 | 33°F 1952 | 48% | 0% |
| Apr 30 | 64°F | 47°F | 90°F 1998 | 33°F 1964 | 47% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- April 1
- sunrise 6:51 AM, sunset 7:39 PM
- April 30
- sunrise 6:00 AM, sunset 8:16 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00356749 (Portland Kgw-TV), public domain. Records: NOAA GHCN-Daily, station USW00024229, 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.