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The climate of Idaho (United States of America)
The state of Idaho is located in the northwestern part of the United States of America. Idaho has a mountainous landscape. The scenery is dominated by the Rocky Mountains with several rough sections, for instance in Hells Canyon and the Balanced Rock. Idaho has a combination of arid and continental climate types with warm summers and cold winters which may be really dreadful. In the eastern part of Idaho the Pacific Ocean only has little influence. Because of this extreme cold is not uncommon here. On the mountains subzero temperatures during the night may even occur during summer. In Sun Valley which is a popular winter sports destination at an altitude of 1,800 meters subzero temperatures can be recorded all year round while average maximum temperatures during the summer are around 24-25 degrees Celsius (75-77 degrees Fahrenheit).

Average annual precipitation figures are fairly low in Idaho. On an annual basis only 300-500 millimeters of precipitation can be recorded. However, on the leeward side of a mountain it may be much wetter. In the western part of the state winters are wetter than summers which is caused by the supply of moist air from the Pacific Ocean. During the winter most precipitation here falls in the form of snow.

Climate information of places in Idaho
The climate information given on this page is only brief. Specific information on weather and climate can be found on the pages per region or city. The following climate information is available for Idaho:

Climate information
Throughout Idaho several climate figures and temperatures can be recorded. The figures below are for Boise and cannot be seen as an average for this state. For climate figures for other places and regions in Idaho please, visit the individual climate pages.

	average  maximum temperature (°C)	average minimum temperature (°C)	average hours of sunshine per day	average days with precipitation per month	average mm precipitation per month	average sea temperature (°C)
January	2	-6	4	12		n/a
February	7	-3	5	9		n/a
March	12	-1	8	10		n/a
April	16	2	9	9		n/a
May	22	6	11	7		n/a
June	27	11	12	6		n/a
July	32	14	13	3		n/a
August	31	13	12	4		n/a
September	25	8	10	5		n/a
October	18	3	8	6		n/a
November	10	-1	4	11		n/a
December	2	-6	3	12		n/a
= 0-5 mm ● = 6-30 mm ● = 31-60 mm ● = 61-100 mm ● = 101-200 mm ● = over 200 mm = 0-0.2 inches ● = 0.2-1.2 inches ● = 1.2-2.4 inches ● = 2.5-4 inches ● = 4.1-8 inches ● = over 8 inches

More climate information
Climate tables are useful but they don’t give an overall picture of the climate and possible weather conditions during a period of time. How high the chances are of hot or cold weather or hurricanes can often not be found in these tables. This is why we offer extra climate information per month. The figures below apply to Boise. For climate figures on specific regions and places please, visit the relevant individual climate pages.

	chance of (very) hot weather	chance of (very) cool weather	chance of long-term precipitation	chance of hurricanes (cyclones)	chance of sunny days	UV-index
January
February
March
April
May
June
July
August
September
October
November
December
click here for the explanation of the symbols

Disclaimer
The information at this site was carefully composed from climate data collected by meteorological services, meteorological offices, climate experts and other sources. “More climate info” is based on statistics, climate data and personal experience. No rights can be derived from this site. Weather has no memory and gives no guaranties. Nothing is as changeable and unpredictable as the weather. The authors of this site feel in no way responsible for any damages caused by misinterpretation or other circumstances that may influence your holiday or trip to a certain destination. We provide information, it’s up to the reader to use it to it’s benefit.