Dumbarton Weather in April
Average highs run from 65°F on April 1 to 74°F on April 30, and lows from 41°F to 50°F. Normal precipitation for the month is 3.43 in over about 11 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
- 70°F
- Average low
- 45°F
- Precipitation
- 3.43 in
- Record high
- 96°FApr 17, 2002
- Record low
- 25°FApr 6, 2004
- Chance of a freeze
- 75%
- Days of 90°F or more
- 0.5
- Daylight
- 12 h 38 min to 13 h 43 min
- Cloud cover
- 60%
- Humidity
- 76%
- Dew point
- 48°F
- Wind
- 6.3 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 | 65°F | 41°F | 87°F 2026 | 29°F 2019 | 36% | 1% |
| Apr 2 | 65°F | 41°F | 85°F 2007 | 27°F 2013 | 36% | 1% |
| Apr 3 | 65°F | 41°F | 85°F 2003 | 25°F 2013 | 36% | 1% |
| Apr 4 | 66°F | 42°F | 87°F 2011 | 26°F 2013 | 36% | 1% |
| Apr 5 | 66°F | 42°F | 89°F 2010 | 28°F 2016 | 36% | 1% |
| Apr 6 | 67°F | 42°F | 92°F 2010 | 25°F 2004 | 36% | 1% |
| Apr 7 | 67°F | 42°F | 93°F 2010 | 25°F 2002 | 36% | 1% |
| Apr 8 | 67°F | 43°F | 85°F 2001 | 28°F 2007 | 36% | 1% |
| Apr 9 | 68°F | 43°F | 93°F 2001 | 25°F 2007 | 36% | 1% |
| Apr 10 | 68°F | 43°F | 91°F 2013 | 25°F 2016 | 36% | 0% |
| Apr 11 | 68°F | 44°F | 86°F 2013 | 29°F 1997 | 36% | 0% |
| Apr 12 | 69°F | 44°F | 84°F 2001 | 31°F 1998 | 36% | 0% |
| Apr 13 | 69°F | 44°F | 88°F 2022 | 32°F 1999 | 36% | 0% |
| Apr 14 | 69°F | 45°F | 88°F 2026 | 31°F 2016 | 36% | 0% |
| Apr 15 | 70°F | 45°F | 92°F 2026 | 30°F 1997 | 36% | 0% |
| Apr 16 | 70°F | 45°F | 91°F 2026 | 31°F 2008 | 37% | 0% |
| Apr 17 | 70°F | 46°F | 96°F 2002 | 29°F 2014 | 37% | 0% |
| Apr 18 | 71°F | 46°F | 91°F 2002 | 32°F 2014 | 37% | 0% |
| Apr 19 | 71°F | 46°F | 90°F 2002 | 28°F 2001 | 37% | 0% |
| Apr 20 | 71°F | 47°F | 89°F 2023 | 31°F 1997 | 37% | 0% |
| Apr 21 | 72°F | 47°F | 88°F 2023 | 31°F 2026 | 38% | 0% |
| Apr 22 | 72°F | 47°F | 91°F 1999 | 32°F 2013 | 38% | 0% |
| Apr 23 | 72°F | 48°F | 88°F 1999 | 34°F 2021 | 38% | 0% |
| Apr 24 | 72°F | 48°F | 89°F 2022 | 32°F 2003 | 38% | 0% |
| Apr 25 | 73°F | 48°F | 93°F 2009 | 34°F 1999 | 39% | 0% |
| Apr 26 | 73°F | 49°F | 92°F 2009 | 35°F 2001 | 39% | 0% |
| Apr 27 | 73°F | 49°F | 91°F 2009 | 36°F 1998 | 39% | 0% |
| Apr 28 | 73°F | 49°F | 88°F 2021 | 33°F 1998 | 39% | 0% |
| Apr 29 | 74°F | 50°F | 89°F 2017 | 33°F 2010 | 39% | 0% |
| Apr 30 | 74°F | 50°F | 90°F 2007 | 36°F 2006 | 39% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EDT).
- April 1
- sunrise 6:55 AM, sunset 7:33 PM
- April 30
- sunrise 6:16 AM, sunset 7:59 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00093775 (Ashland Hanover CO Muni AP), public domain. Records: NOAA GHCN-Daily, station USW00093775, 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.