Ohio Weather

Weather information is provided by the National Weather Service. These sites provide archived climatological data for various Ohio cities. Included in the data is heating degree day calculations and daily minimum and maximum temperatures.

Toledo, Ohio

Columbus, Ohio

What Is a Heating Degree Day?

Heating Degree Days measure the coldness of the weather. They are computed by taking the average temperature on a given day and subtracting it from 65° degrees. Each degree the average daily temperature falls below 65° degrees represents a heating degree day. The table that follows shows calendar degree days, which are based on the actual temperatures recorded during the month. They are intended to provide a general indication of coldness compared to normal weather.

Heating Degree Days for Central Ohio

Normal vs. Actual

Month	Normal	2007	2006	2005	2004	2003	2002	2001	2000	1999	1998	1997	1996
Jan	1146	946	748	1056	1257	1306	904	1117	1172	1045	843	1136	1147
Feb	959	1221	875	861	951	1059	809	822	789	776	879	800	992
Mar	712	548	758	857	659	668	724	828	586	848	681	687	905
Apr	382	431	248	323	370	306	345	289	403	299	352	494	448
May	87	72	180	215	8	144	225	96	84	68	38	264	191
Jun	0	2	20	1	3	54	4	24	21	9	41	15	11
Jul	0	0	0	0	0	0	0	2	1	0	0	0	2
Aug	0	0	0	0	8	0	0	0	3	0	0	10	0
Sep	20	25	80	15	24	76	21	97	104	46	22	63	74
Oct	318	171	399	324	307	374	390	297	256	295	292	346	307
Nov	643	607	567	580	556	526	700	456	717	517	567	741	821
Dec	983	899	766	1092	996	960	1002	815	1284	936	829	933	859
Total	5250	4922	4641	5324	5209	5473	5124	4843	5420	4839	4343	5489	5757