Weather Report and Forecast for
Portsmouth, IA

Sunday, May 27th 2012, 8:18am CDT

7-day Forecast / 10-day Forecast

Latitude: 41°39'N, Longitude: 95°19'W, Elevation: 1210.0 ft, Distance: 9.46 mi Portsmouth, IA Averages »

	Unit	Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Average temperature over 30 years	°F	48	19	24	36	50	61	70	74	72	63	52	37	23
Average high temperature over 30 years	°F	60	29	35	47	63	73	82	86	83	75	63	47	32
Average low temperature over 30 years	°F	37	9	14	26	37	49	58	63	60	52	40	27	14
Highest recorded temperature over 98 years	°F	111	68	69	89	93	100	102	111	105	102	93	78	66
Lowest recorded temperature over 98 years	°F	-36	-36	-36	-23	1	17	31	39	35	19	10	-9	-25
Average number of days above 90°F over 30 years	days	18	-	-	-	0.2	0.5	3.6	6.7	5.1	1.4	0.1	-	-
Average precipitation over 30 years	in	32.6	0.7	0.8	2.1	3.1	4.3	4.4	3.8	3.6	4.7	2.6	1.6	1.0
Average number of days below 32°F over 30 years	days	106	21	19	16	6.9	0.8	-	-	-	0.4	4.9	16	21
Average number of days below 0°F over 30 years	days	13	5.6	3.5	0.6	-	-	-	-	-	-	-	0.2	2.9
Average snowfall over 30 years	in	31.3	7.1	6.9	6.4	1.2	-	-	-	-	-	0.5	2.4	7.0
Most rain reported in a day over 98 years	in	7.8	1.4	1.6	2.0	3.0	5.4	4.1	6.7	5.2	7.8	3.7	4.1	1.9
Most rain reported in a month over 98 years	in	47.3	2.9	2.9	4.8	7.8	12.9	12.3	13.6	9.9	16.3	6.9	9.9	3.2
Least rain reported in a month over 98 years	in	19.2	-	0.1	-	0.1	0.5	0.2	0.3	0.4	0.2	-	-	-
Heating degree days over 30 years	days	6690	1415	1124	875	443	165	21	4	12	120	409	819	1283
Cooling degree days over 30 years	days	891	-	-	-	10	56	194	311	232	80	8	-	-
Most snow reported in a month over 98 years	in	56.7	28.2	21.2	18.4	8.0	-	-	0.2	0.5	-	5.5	11.7	21.6

Check weather averages for nearby locations (some locations might offer more data):

Average temperature of May: 61°F. Average high temperature: 73°F. Average low temperature: 49°F. Portsmouth, IA Averages »

Check out weather for other locations in Iowa or United States

Locations you have checked lately:

Beyond Weather