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Elmore County, ID

: September 2026 so far averaged 58.7°F in Elmore County, ID, the coldest 1 to 29 September in the county average since 2016, 30th coldest of 76 (county average from NOAA gridded data, 1951 to 2026).

Last updated . This page normally updates every day; the latest update is late.

High
69.4°F
Coldest since 2023
29th coldest of 76
Low
42.7°F
Warmest since 2025
33rd warmest of 76

No measurable precipitation in the county average of Elmore County, ID for 5 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).

Every 29 September high of the county average in Elmore County, ID since 1951: 69.4°F in 2026; the highest is 85.8°F, in 2010.
2023: 65.8°F2010: 85.8°F2026: 69.4°F 2026 69.4°F 2010 85.8°F since 2023 1951 2026
  • Normal range, 63.4 to 81.7°F
Every year as a table

Every 29 September low of the county average in Elmore County, ID since 1951: 42.7°F in 2026; the lowest is 26°F, in 1999.

YearHigh, °FLow, °F
202669.442.7
202580.646.5
202485.346
202365.838.1
202282.551.4
202157.636.3
202071.939.1
201949.935.7
201879.345.1
201772.839.2
201683.449.6
201578.445
20146246.1
201363.540.8
201279.245.6
201175.746.4
201085.847.9
200978.345.2
200879.342
200765.236
200678.342.8
200572.436.2
200477.946.1
200383.748
200266.735.2
20017247
200078.345.8
199959.426
199876.444
199771.236.9
199678.642.3
199564.341.1
199481.347.9
199377.840.9
199281.540.3
199164.950.8
199076.845
198981.850
198864.533.3
198772.533.8
198651.333
198554.427.6
198463.430.5
198359.237.9
198251.536.8
198160.542.1
198072.542
19797743
197871.841.1
197767.445.7
197675.744.2
197571.439.5
19747333
197376.742.4
197258.730.7
197149.734.1
197078.839.2
196974.444.5
196870.241.4
196783.250.2
196674.543.6
196559.834.2
196473.937.5
196384.849.5
196257.536.4
196159.836
196075.344.5
195949.631.7
195871.643.8
195777.949.2
195666.333.3
195557.629.4
195453.730
19536635.8
195276.539.7
195170.445.6

The month

August 2026 averaged 72.2°F in Elmore County, ID, the warmest August in the county average since 2022, 4th warmest of 132 (county average from NOAA's monthly county data, 1895 to 2026).

The month in words
  • Tuesday 29 September 2026: a high of 69.4°F averaged over Elmore County, ID, the coldest 29 September day in the county average since 2023, 29th coldest of 76 (county average from NOAA gridded data, 1951 to 2026).
  • Tuesday 29 September 2026: a low of 42.7°F averaged over Elmore County, ID, the warmest 29 September night in the county average since 2025, 33rd warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
Days of the month without a value
0

Nearby

Boise, ID 40.4 mi, the nearest city with its own station