Eagle climate

Eagle Weather in September

NOAA 1991-2020 normals for Boise 7 N, 13.1 km from Eagle

Average highs run from 82°F on September 1 to 70°F on September 30, and lows from 54°F to 46°F. Normal precipitation for the month is 0.57 in over about 5 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 Eagle, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
76°F
Average low
50°F
Precipitation
0.57 in
Record high
104°FSep 7, 2022
Record low
23°FSep 14, 1970
Chance of a freeze
17%
Days of 90°F or more
1.4
Daylight
13 h 12 min to 11 h 46 min
Cloud cover
35%
Humidity
34%
Dew point
33°F
Wind
6.7 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°F54°F102°F 194541°F 197713%0%
Sep 281°F54°F101°F 195042°F 199913%0%
Sep 381°F54°F102°F 202237°F 195613%0%
Sep 481°F53°F102°F 202040°F 196914%0%
Sep 580°F53°F100°F 196336°F 196914%0%
Sep 680°F53°F101°F 202240°F 194514%0%
Sep 779°F53°F104°F 202234°F 197614%0%
Sep 879°F52°F98°F 202437°F 194614%0%
Sep 979°F52°F98°F 202134°F 197015%0%
Sep 1078°F52°F97°F 199036°F 198915%0%
Sep 1178°F52°F97°F 196335°F 198215%0%
Sep 1278°F51°F94°F 196332°F 197015%0%
Sep 1377°F51°F94°F 194531°F 197015%0%
Sep 1477°F51°F101°F 200023°F 197016%0%
Sep 1576°F50°F94°F 199536°F 197016%0%
Sep 1676°F50°F93°F 194333°F 196516%0%
Sep 1776°F50°F95°F 198124°F 196516%0%
Sep 1875°F50°F96°F 198127°F 196516%0%
Sep 1975°F49°F94°F 200831°F 197817%0%
Sep 2074°F49°F89°F 196633°F 198317%0%
Sep 2174°F49°F95°F 196730°F 199317%0%
Sep 2274°F48°F99°F 196631°F 195517%0%
Sep 2373°F48°F94°F 198729°F 198417%0%
Sep 2473°F48°F98°F 201128°F 198417%0%
Sep 2572°F47°F95°F 196328°F 197217%0%
Sep 2672°F47°F93°F 196335°F 196118%0%
Sep 2771°F47°F95°F 202232°F 194518%0%
Sep 2871°F46°F95°F 196331°F 199918%0%
Sep 2970°F46°F95°F 199227°F 195418%0%
Sep 3070°F46°F96°F 199229°F 195418%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Eagle, in percent, and of at least 0.1 inch of snowfall.051015201102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MDT).

September 1
sunrise 7:09 AM, sunset 8:21 PM
September 30
sunrise 7:42 AM, sunset 7:28 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00101017 (Boise 7 N), public domain. Records: NOAA GHCN-Daily, station USW00024131, 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.