Hillsboro climate

Hillsboro Weather in September

NOAA 1991-2020 normals for Hillsboro, 3.5 km from Hillsboro

Average highs run from 82°F on September 1 to 73°F on September 30, and lows from 58°F to 48°F. Normal precipitation for the month is 3.17 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 Hillsboro, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
78°F
Average low
53°F
Precipitation
3.17 in
Record high
98°FSep 5, 1954
Record low
34°FSep 24, 2012
Chance of a freeze
3%
Days of 90°F or more
1.3
Daylight
13 h 02 min to 11 h 48 min
Cloud cover
49%
Humidity
68%
Dew point
55°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
Sep 182°F58°F96°F 195345°F 196731%0%
Sep 282°F58°F97°F 201144°F 196731%0%
Sep 382°F57°F97°F 201146°F 199831%0%
Sep 481°F57°F96°F 202645°F 201030%0%
Sep 581°F57°F98°F 195442°F 201030%0%
Sep 681°F56°F97°F 195447°F 201730%0%
Sep 781°F56°F93°F 201043°F 202530%0%
Sep 880°F56°F94°F 200242°F 199830%0%
Sep 980°F55°F97°F 195541°F 199830%0%
Sep 1080°F55°F93°F 201341°F 199830%0%
Sep 1180°F55°F91°F 201342°F 199930%0%
Sep 1279°F54°F91°F 201944°F 195530%0%
Sep 1379°F54°F91°F 201940°F 195330%0%
Sep 1479°F54°F93°F 199840°F 195330%0%
Sep 1578°F53°F89°F 195442°F 199930%0%
Sep 1678°F53°F91°F 202639°F 201130%0%
Sep 1778°F53°F91°F 195540°F 195930%0%
Sep 1878°F52°F91°F 195340°F 195930%0%
Sep 1977°F52°F91°F 202438°F 201230%0%
Sep 2077°F52°F92°F 202439°F 195630%0%
Sep 2176°F51°F94°F 202439°F 199930%0%
Sep 2276°F51°F93°F 202435°F 199930%0%
Sep 2376°F50°F94°F 201036°F 201230%0%
Sep 2475°F50°F94°F 200734°F 201230%0%
Sep 2575°F50°F92°F 200738°F 196530%0%
Sep 2675°F49°F90°F 201740°F 196530%0%
Sep 2774°F49°F89°F 201738°F 200030%0%
Sep 2874°F48°F89°F 195938°F 195730%0%
Sep 2974°F48°F95°F 195337°F 200030%0%
Sep 3073°F48°F91°F 195334°F 194930%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Hillsboro, 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 7:03 AM, sunset 8:05 PM
September 30
sunrise 7:30 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 USC00333758 (Hillsboro), public domain. Records: NOAA GHCN-Daily, station USW00013841, 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.