Delaware December-September Average Temperature
Degrees Fahrenheit
1901-2000
-99
189609
54.9
0.1
189709
53.7
-1.1
189809
55.9
1.1
189909
53.7
-1.1
190009
55.4
0.6
190109
54.1
-0.7
190209
53.4
-1.4
190309
54.3
-0.5
190409
51.8
-3.0
190509
52.5
-2.3
190609
55.4
0.6
190709
52.7
-2.1
190809
54.8
0.0
190909
54.8
0.0
191009
54.4
-0.4
191109
54.4
-0.4
191209
53.3
-1.5
191309
56.3
1.5
191409
54.1
-0.7
191509
54.2
-0.6
191609
53.5
-1.3
191709
53.1
-1.7
191809
52.6
-2.2
191909
55.4
0.6
192009
52.4
-2.4
192109
57.6
2.8
192209
54.7
-0.1
192309
54.2
-0.6
192409
53.6
-1.2
192509
56.0
1.2
192609
53.5
-1.3
192709
53.3
-1.5
192809
54.1
-0.7
192909
55.1
0.3
193009
56.1
1.3
193109
54.9
0.1
193209
56.4
1.6
193309
56.3
1.5
193409
54.0
-0.8
193509
53.9
-0.9
193609
53.5
-1.3
193709
55.5
0.7
193809
55.5
0.7
193909
56.0
1.2
194009
52.0
-2.8
194109
54.7
-0.1
194209
55.7
0.9
194309
55.1
0.3
194409
55.2
0.4
194509
55.3
0.5
194609
54.6
-0.2
194709
54.9
0.1
194809
53.9
-0.9
194909
57.1
2.3
195009
54.9
0.1
195109
54.9
0.1
195209
56.3
1.5
195309
56.6
1.8
195409
56.2
1.4
195509
55.8
1.0
195609
53.5
-1.3
195709
56.6
1.8
195809
53.7
-1.1
195909
55.3
0.5
196009
54.9
0.1
196109
53.8
-1.0
196209
53.9
-0.9
196309
53.1
-1.7
196409
54.0
-0.8
196509
54.5
-0.3
196609
54.2
-0.6
196709
53.4
-1.4
196809
54.4
-0.4
196909
54.3
-0.5
197009
53.8
-1.0
197109
54.1
-0.7
197209
54.8
0.0
197309
56.5
1.7
197409
55.6
0.8
197509
55.4
0.6
197609
55.9
1.1
197709
54.9
0.1
197809
52.9
-1.9
197909
54.0
-0.8
198009
55.5
0.7
198109
54.4
-0.4
198209
53.4
-1.4
198309
56.2
1.4
198409
54.1
-0.7
198509
56.2
1.4
198609
55.3
0.5
198709
55.7
0.9
198809
55.4
0.6
198909
55.7
0.9
199009
56.0
1.2
199109
58.1
3.3
199209
54.9
0.1
199309
55.8
1.0
199409
54.8
0.0
199509
56.8
2.0
199609
54.2
-0.6
199709
55.9
1.1
199809
58.1
3.3
199909
57.2
2.4
200009
56.4
1.6
200109
55.1
0.3
200209
59.1
4.3
200309
54.6
-0.2
200409
56.4
1.6
200509
56.3
1.5
200609
57.3
2.5
200709
57.0
2.2
200809
57.3
2.5
200909
56.2
1.4
201009
57.9
3.1
201109
56.9
2.1
201209
59.8
5.0
201309
56.9
2.1
201409
55.2
0.4
201509
55.9
1.1
201609
59.1
4.3
201709
58.5
3.7