Dennis climate

Dennis Weather in April

NOAA 1991-2020 normals for Hyannis, 12 km from Dennis

Average highs run from 48°F on April 1 to 59°F on April 30, and lows from 34°F to 43°F. Normal precipitation for the month is 4.00 in over about 11 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 Dennis, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

April at a glance

Average high
54°F
Average low
38°F
Precipitation
4.00 in
Record high
86°FApr 17, 2002
Record low
20°FApr 2, 2015
Chance of a freeze
97%
Daylight
12 h 42 min to 13 h 59 min
Cloud cover
66%
Humidity
85%
Dew point
40°F
Wind
15.9 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.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Apr 148°F34°F63°F 199924°F 201536%2%
Apr 249°F34°F61°F 200620°F 201536%2%
Apr 349°F34°F58°F 200924°F 201836%2%
Apr 449°F35°F64°F 202525°F 200136%2%
Apr 550°F35°F62°F 200923°F 201636%2%
Apr 650°F35°F69°F 201025°F 201836%1%
Apr 750°F36°F80°F 201024°F 200736%1%
Apr 851°F36°F67°F 199925°F 202636%1%
Apr 951°F36°F67°F 201322°F 202636%1%
Apr 1052°F36°F64°F 200825°F 202536%1%
Apr 1152°F37°F67°F 202324°F 201836%1%
Apr 1252°F37°F67°F 202327°F 199836%1%
Apr 1353°F37°F77°F 202329°F 200536%1%
Apr 1453°F38°F83°F 202329°F 200036%1%
Apr 1553°F38°F73°F 202629°F 200136%1%
Apr 1654°F38°F70°F 201727°F 200536%1%
Apr 1754°F39°F86°F 200225°F 200336%0%
Apr 1855°F39°F66°F 200924°F 200336%0%
Apr 1955°F40°F70°F 200827°F 200136%0%
Apr 2055°F40°F74°F 200529°F 202636%0%
Apr 2156°F40°F68°F 200726°F 202036%0%
Apr 2256°F41°F74°F 201628°F 200636%0%
Apr 2356°F41°F71°F 200829°F 202436%0%
Apr 2457°F41°F74°F 200729°F 202636%0%
Apr 2557°F42°F72°F 202528°F 200235%0%
Apr 2657°F42°F86°F 200927°F 202435%0%
Apr 2758°F42°F67°F 201130°F 202435%0%
Apr 2858°F42°F78°F 200931°F 200035%0%
Apr 2958°F43°F76°F 201731°F 200135%0%
Apr 3059°F43°F70°F 201030°F 199935%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Dennis, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

April 1
sunrise 6:24 AM, sunset 7:06 PM
April 30
sunrise 5:39 AM, sunset 7:38 PM

Every day of April: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00193821 (Hyannis), public domain. Records: NOAA GHCN-Daily, station USW00094720, 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.