Deerfield climate

Deerfield Weather in September

NOAA 1991-2020 normals for Dundee, 13 km from Deerfield

Average highs run from 79°F on September 1 to 70°F on September 30, and lows from 58°F to 47°F. Normal precipitation for the month is 2.86 in over about 9 wet days.

September day by day

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

Normal daily high and low temperature at Deerfield, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
75°F
Average low
53°F
Precipitation
2.86 in
Record high
98°FSep 8, 1978
Record low
26°FSep 23, 1974
Chance of a freeze
4%
Days of 90°F or more
1.7
Daylight
13 h 07 min to 11 h 47 min
Cloud cover
53%
Humidity
72%
Dew point
54°F
Wind
8.9 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
Sep 179°F58°F95°F 196041°F 196731%0%
Sep 279°F57°F96°F 202641°F 195831%0%
Sep 379°F57°F95°F 200843°F 196731%0%
Sep 479°F57°F95°F 196040°F 197431%0%
Sep 579°F56°F94°F 201842°F 197231%0%
Sep 678°F56°F95°F 199039°F 197631%0%
Sep 778°F56°F95°F 200238°F 198831%0%
Sep 878°F56°F98°F 197837°F 198631%0%
Sep 978°F55°F95°F 200238°F 198631%0%
Sep 1077°F55°F97°F 201338°F 196931%0%
Sep 1177°F55°F95°F 201335°F 196731%0%
Sep 1277°F54°F91°F 198237°F 196731%0%
Sep 1376°F54°F92°F 201935°F 197531%0%
Sep 1476°F53°F92°F 202131°F 197531%0%
Sep 1576°F53°F94°F 199139°F 197531%0%
Sep 1675°F53°F91°F 195535°F 196631%0%
Sep 1775°F52°F96°F 195534°F 195931%0%
Sep 1875°F52°F93°F 195535°F 195931%0%
Sep 1974°F52°F93°F 195535°F 197331%0%
Sep 2074°F51°F90°F 197833°F 195631%0%
Sep 2174°F51°F93°F 197030°F 196232%0%
Sep 2273°F50°F92°F 201729°F 197432%0%
Sep 2373°F50°F92°F 201026°F 197432%0%
Sep 2472°F50°F92°F 201730°F 197632%0%
Sep 2572°F49°F92°F 201732°F 197632%0%
Sep 2672°F49°F92°F 199834°F 196632%0%
Sep 2771°F48°F89°F 197333°F 198033%0%
Sep 2871°F48°F87°F 195930°F 199133%0%
Sep 2970°F48°F88°F 198629°F 196133%0%
Sep 3070°F47°F88°F 201933°F 199333%0%

Chance of rain

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

September 1
sunrise 7:01 AM, sunset 8:08 PM
September 30
sunrise 7:31 AM, sunset 7:18 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00202308 (Dundee), public domain. Records: NOAA GHCN-Daily, station USW00094830, 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.