The Ithaca Climate Page

Monthly and annual climatological normals for Ithaca, NY

Normal	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Max Temperature (°F)	31	33.1	40.8	54.5	67.3	75.7	79.9	78.5	71.6	59	46.8	36.2	56.2
Min Temperature (°F)	14.6	15.1	21.8	32.9	44	53.4	57.9	56.3	48.8	38.9	30.4	22	36.3
Avg Temperature (°F)	22.8	24.1	31.3	43.7	55.6	64.6	68.9	67.4	60.2	49	38.6	29.1	46.3
HDD (base 65)	1308	1145	1045	642	314	95	27	42	184	501	792	1113	7208
CDD (base 65)	0	0	0	3	24	81	148	116	40	3	0	0	415
Precipitation (inches)	2.24	1.98	2.78	3.4	3.2	3.98	3.9	3.77	3.83	3.7	2.94	2.57	38.29
Snowfall (inches)	16.6	14.5	12	2.8	0	0	0	0	0	0.2	4.6	12.2	62.9

These normals are based on data for the period 1991-2020. Normals are updated every ten years by the National Centers for Environmental Information.