Idaho September-December Average Temperature
Degrees Fahrenheit
1901-2000
-99
189512
37.5
-1.1
189612
38.3
-0.3
189712
38.9
0.3
189812
35.3
-3.3
189912
39.2
0.6
190012
38.8
0.2
190112
40.0
1.4
190212
38.4
-0.2
190312
37.8
-0.8
190412
41.2
2.6
190512
36.8
-1.8
190612
40.3
1.7
190712
40.4
1.8
190812
38.1
-0.5
190912
37.6
-1.0
191012
40.5
1.9
191112
35.8
-2.8
191212
36.3
-2.3
191312
37.7
-0.9
191412
37.0
-1.6
191512
38.2
-0.4
191612
34.9
-3.7
191712
43.0
4.4
191812
39.2
0.6
191912
34.3
-4.3
192012
37.8
-0.8
192112
39.0
0.4
192212
38.7
0.1
192312
38.8
0.2
192412
36.1
-2.5
192512
39.2
0.6
192612
38.4
-0.2
192712
37.9
-0.7
192812
37.7
-0.9
192912
38.5
-0.1
193012
35.0
-3.6
193112
36.4
-2.2
193212
37.1
-1.5
193312
41.9
3.3
193412
40.4
1.8
193512
37.4
-1.2
193612
38.6
0.0
193712
41.9
3.3
193812
39.8
1.2
193912
41.8
3.2
194012
39.7
1.1
194112
38.6
0.0
194212
39.7
1.1
194312
40.7
2.1
194412
39.2
0.6
194512
38.2
-0.4
194612
37.8
-0.8
194712
39.3
0.7
194812
36.3
-2.3
194912
39.5
0.9
195012
41.3
2.7
195112
36.6
-2.0
195212
39.4
0.8
195312
41.6
3.0
195412
39.1
0.5
195512
38.0
-0.6
195612
37.8
-0.8
195712
38.7
0.1
195812
40.7
2.1
195912
37.8
-0.8
196012
39.1
0.5
196112
35.8
-2.8
196212
41.2
2.6
196312
41.0
2.4
196412
38.4
-0.2
196512
39.3
0.7
196612
40.3
1.7
196712
39.5
0.9
196812
37.7
-0.9
196912
38.8
0.2
197012
36.4
-2.2
197112
35.6
-3.0
197212
36.2
-2.4
197312
39.4
0.8
197412
39.8
1.2
197512
38.9
0.3
197612
39.5
0.9
197712
39.3
0.7
197812
36.1
-2.5
197912
40.2
1.6
198012
40.3
1.7
198112
40.2
1.6
198212
36.8
-1.8
198312
37.5
-1.1
198412
35.4
-3.2
198512
32.2
-6.4
198612
37.9
-0.7
198712
40.8
2.2
198812
39.7
1.1
198912
39.8
1.2
199012
38.0
-0.6
199112
39.2
0.6
199212
37.4
-1.2
199312
37.9
-0.7
199412
37.9
-0.7
199512
40.4
1.8
199612
38.7
0.1
199712
39.4
0.8
199812
40.2
1.6
199912
41.3
2.7
200012
37.0
-1.6
200112
40.6
2.0
200212
39.6
1.0
200312
40.4
1.8
200412
39.9
1.3
200512
38.7
0.1
200612
39.1
0.5
200712
38.7
0.1
200812
39.9
1.3
200912
38.1
-0.5
201012
40.3
1.7
201112
40.1
1.5
201212
41.0
2.4
201312
38.5
-0.1
201412
41.6
3.0
201512
40.5
1.9