Castine climate

Castine Weather in October

NOAA 1991-2020 normals for Belfast, 15.1 km from Castine

Average highs run from 64°F on October 1 to 52°F on October 31, and lows from 43°F to 34°F. Normal precipitation for the month is 5.38 in over about 10 wet days.

October day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Castine, in °F, with the record for each date.020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

October at a glance

Average high
57°F
Average low
38°F
Precipitation
5.38 in
Snowfall
0.3 in
Record high
83°FOct 9, 2011
Record low
20°FOct 29, 2024
Chance of a freeze
98%
Daylight
11 h 43 min to 10 h 15 min
Cloud cover
63%
Humidity
81%
Dew point
43°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.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Oct 164°F43°F75°F 201334°F 201728%0%
Oct 263°F42°F78°F 201335°F 202228%0%
Oct 363°F42°F82°F 202331°F 201728%0%
Oct 462°F42°F76°F 202529°F 202228%0%
Oct 562°F41°F74°F 201731°F 201629%0%
Oct 662°F41°F76°F 202530°F 201929%0%
Oct 761°F41°F76°F 201629°F 201129%0%
Oct 861°F40°F78°F 201133°F 202229%0%
Oct 960°F40°F83°F 201128°F 202230%0%
Oct 1060°F40°F78°F 201829°F 202530%0%
Oct 1159°F39°F74°F 201329°F 202230%0%
Oct 1259°F39°F76°F 202129°F 202030%0%
Oct 1359°F39°F72°F 202128°F 201230%0%
Oct 1458°F38°F72°F 202131°F 201830%0%
Oct 1558°F38°F68°F 201428°F 201630%0%
Oct 1657°F38°F66°F 201430°F 201930%0%
Oct 1757°F38°F71°F 201629°F 202431%0%
Oct 1857°F37°F68°F 201727°F 201831%0%
Oct 1956°F37°F74°F 201623°F 201531%1%
Oct 2056°F37°F67°F 202431°F 201431%1%
Oct 2155°F36°F75°F 202429°F 201831%1%
Oct 2255°F36°F68°F 202124°F 201831%1%
Oct 2355°F36°F66°F 202226°F 201831%1%
Oct 2454°F36°F67°F 202428°F 201531%1%
Oct 2554°F35°F65°F 201729°F 201231%1%
Oct 2653°F35°F69°F 202327°F 201331%1%
Oct 2753°F35°F71°F 202325°F 201531%1%
Oct 2853°F34°F74°F 202324°F 202431%1%
Oct 2952°F34°F62°F 201220°F 202431%1%
Oct 3052°F34°F65°F 202224°F 201331%1%
Oct 3152°F34°F63°F 201220°F 202031%1%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Castine, 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).

October 1
sunrise 6:33 AM, sunset 6:16 PM
October 31
sunrise 7:11 AM, sunset 5:26 PM

Every day of October: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00170480 (Belfast), public domain. Records: NOAA GHCN-Daily, station USC00172443, 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.