Average April Temperatures for Idaho

Average temperatures for April at cities, towns, parks and lakes throughout Idaho are listed below in degrees Fahrenheit and Celsius.

You can jump to a separate table for each region of the state: Eastern, Central, Southwestern and Northern Idaho.

The tables give the normals for maximum and minimum temperatures based on weather data collected from 1991 to 2020 by the US National Centers for Environmental Information.

Eastern Idaho

Average April temperatures
High °F	Low °F	Place	High °C	Low °C
54	28	Driggs	12	-3
58	31	Idaho Falls	14	0
47	23	Island Park	9	-5
60	32	Malad City	15	0
61	37	Pocatello	16	3
59	33	Preston	15	0
55	31	Saint Anthony	13	-1

Central Idaho

Average daily temperatures in April
High °F	Low °F	Place	High °C	Low °C
50	26	Craters of the Moon Monument	10	-4
52	27	Ketchum	11	-3
60	33	Lake Walcott, Minidoka Dam	16	0
57	31	Middle Fork Lodge	14	-1
59	32	Salmon	15	0
58	35	St. Maries	14	2
50	18	Stanley, Sawtooth Recreation Area	10	-8
59	35	Twin Falls	15	2

Southwestern Idaho

April temperatures: daily averages
High °F	Low °F	Place	High °C	Low °C
62	40	Boise	17	4
64	42	Brownlee Reservoir Dam	18	5
68	40	Bruneau	20	5
56	28	Idaho City	13	-3
65	38	Lake Lowell, Deer Flat Dam	18	4
51	27	McCall	10	-3
63	36	Mountain Home	17	2

Northern Idaho

Average April temperatures
High °F	Low °F	Place	High °C	Low °C
59	36	Bonners Ferry	15	2
56	37	Coeur d’Alene	13	3
53	27	Elk City	12	-3
58	32	Kellogg	14	0
62	41	Lewiston	17	5
58	32	Moscow	14	0
55	32	Mullan	13	0
60	34	Porthill	16	1
53	29	Powell	12	-2
62	35	Riggins	17	1
56	35	Sandpoint	13	1
55	34	Wallace	13	1

Average Temperatures for Idaho in April

Eastern Idaho

Central Idaho

Southwestern Idaho

Northern Idaho

Reference

More Idaho Weather Information