Climate and monthly weather forecastIdaho City, ID
Climate and monthly weather forecast
The climate of Idaho City
Idaho City, located in Idaho, USA, possesses a predominant Koppen climate classification of Dsb. Generally recognized as a Humid Continental, Dry Warm Summer climate, Idaho City boasts distinct seasonal variations, with cold winters and warm summers. January experiences the harshest temperatures averaging between 19.8°F (-6.8°C) and 32.5°F (0.3°C), while the warmest months ranging from 56.7°F (13.7°C) to 86.5°F (30.3°C) usually occur between June and August.Predominant weather parameters show significant changes throughout the year. Daily hours of sunlight oscillate from 9 hours in December to 15.4 hours in June. Rainfall displays a similar pattern with the highest precipitation recorded between March and May, usually varying from 1.97in to 2.83in, and the driest days recorded between, July to September with rainfall measurements barely reaching 0.35in to 0.63in.
Unique weather appearances are not unusual within Idaho City. While rainfall may decrease during the summer, there is an expansion in humidity, watching it reach up to 49%, usually in June. On the contrary, during the cold winters, the humidity rises to approximately 85%, mostly in January. Additionally, Idaho City observes substantial snowfall with accumulations peaking at 20.59in in January and decreasing to around 4.61in by April.
The best time to visit Idaho City
Visitors seeking pleasant temperatures and minimal precipitation should consider June through August as the ideal time for visiting Idaho City. During this period, the average high temperature ranges from 73.9°F (23.3°C) to 86.5°F (30.3°C). Furthermore, these months see the least rainfall, ranging from 0.31in to 0.63in. Idaho City brightness during summer is prominent, with daily sunshine hours peaking at approximately 12.1 hours in July and UV index rates rising to 6.The worst time to visit Idaho City
Winter might impose daunting conditions for some, mainly from December to February when temperatures frequently dip to around 19.8°F (-6.8°C) to 31.3°F (-0.4°C). These months exhibit the greatest snowfall, with January witnessing around 20.59in. Shorter daylight hours around 9 hours combined with reduced visibility of around 5 miles further challenge the desirability of visiting during these months.Spring weather in Idaho City
Spring in Idaho City observes a rise in temperatures and increased precipitation levels. From March to May, temperatures begin to increase, averaging from 29.7°F (-1.3°C) to 64.8°F (18.2°C). Concurrently, rainfall increases, peaking at about 2.83in in March. Days start to lengthen, with daylight hours extending from 12 hours in March to near 15 hours by May. Daily sunshine hours also begin to stretch, ranging from 7.4 hours to 10.7 hours.Summer weather in Idaho City
Summertime in Idaho City comes with warmer temperatures, longer days, and lower rain chances. The period between June and August sees temperatures climbing to highs around 73.9°F (23.3°C) to 86.5°F (30.3°C) with minimal rainfall, usually under 0.63in in September. These months also sustain the longest daylight hours - peaking at 15.4 hours in June - with daily sunshine hours strengthening around 11.3 to 12.1 hours.Autumn weather in Idaho City
Autumn carries a shift in the climate from warm to progressively colder conditions. Between September and November, the high temperatures typically range from 73.9°F (23.3°C) to 42.4°F (5.8°C). Rainfall fluctuates, with a peak of 1.42in in November — daylight hours shrink down to approximately 11 by November, paralleled with an increase in cloud coverage up to 34%.Winter weather in Idaho City
Winter in Idaho City is characterized by freezing temperatures, limited sunshine hours, and heavy snowfall. Between December and February, average temperatures oscillate between 19.8°F (-6.8°C) and 36.3°F (2.4°C). This period also sees the most significant snowfall, accumulating up to 20.59in in January. Sunshine is quite sparse, with daylight dwindling to around 9 hours and daily sunshine hours dropping to approximately 5.2 hours by December. Visibility is reduced, typically to around 5 miles, while the cloud cover increases up to 45%.Weather in January
January is a cold month in Idaho City, marking the onset of winter. Low temperatures reaching 19.8°F (-6.8°C) coupled with high ones barely scraping 32.5°F (0.3°C) emphasize the season's bite. Snowfall quite dominates the precipitation scene, transforming the city into a winter wonderland, while the daylight lasts for a very limited time, hinting at the lengthy nights typical of this period. Weather in January »Weather in February
February sees a slight increase in temperature, signaling the impending end of winter. Nevertheless, the mercury stays within a range from 23.4°F (-4.8°C) to 36.3°F (2.4°C), so thermal clothing remains a necessity. While snowfall persists, its frequency starts to abate, giving way to an equally balanced instance of rainfall. Weather in February »Weather in March
In March, Idaho City welcomes the spring season even as temperatures start to climb. A return of the sun begins to manifest, and the UV index responds accordingly, although the warmth occupies a significantly broader range from 29.7°F (-1.3°C) to 45.1°F (7.3°C). Weather in March »Weather in April
April springs upon Idaho City with a more recognizable shift in weather, as warming trends solidify the arrival of spring. Temperatures now dwell between 34.3°F (1.3°C) and 53.6°F (12°C), pointing to better heat retention during both day and night. Weather in April »Weather in May
May season in Idaho City is definitively warmer, giving forth to full-fledged spring. With temperature bounds set from 41.5°F (5.3°C) to 64.8°F (18.2°C), outdoor activities thrive in more favorable weather conditions. Plants blossom at their fullest thanks to sustained rainfall, lending vibrance to the landscape. Weather in May »Weather in June
June marks the beginning of summer in Idaho City, featuring a considerable leap in temperature. Indeed, locals and tourists can expect heat wave to sit from 48.4°F (9.1°C) to 73.9°F (23.3°C) as per monthly averages. Planning for a longer duration outside becomes possible, courtesy of daylight hours nearing their peak. Weather in June »Weather in July
July is the hottest month of the year in Idaho City, turning the tide of the weather altogether. With the most blazing heat extending from 56.7°F (13.7°C) to 86.5°F (30.3°C), most locals tend to remain indoors. Summer heat spares the city from rainfall, with record numerous days enjoying clear skies. Weather in July »Weather in August
August presents a high-summer season in Idaho City, maintaining elevated temperatures though slightly lesser than July's swelter. The temperature typically meanders around figures ranging between 56.8°F (13.8°C) and 84.7°F (29.3°C). Weather in August »Weather in September
September brings about the awaited changing of seasons in Idaho City, signaling a departure from summer's heat. The earlier roaring temperatures gradually recede, now ranging from 50.4°F (10.2°C) to 73.9°F (23.3°C). As fall comes knocking, a gentle increase in precipitation occurs, setting the stage for autumn hues. Weather in September »Weather in October
October is the middle of the fall season in Idaho City, embodying the defining aspects of autumn. With a noticeable drop in average temperatures, which now sit between 38.3°F (3.5°C) to 55.9°F (13.3°C), the outdoor atmosphere takes on a distinctly chilly feel. Weather in October »Weather in November
November inches Idaho City closer to winter, transitioning from the crisp fall weather. The thermometers register a further drop, marking the onset of the colder season, with temperatures fluctuating from 28°F (-2.2°C) to 42.4°F (5.8°C). Weather in November »Weather in December
December brings into full swing the winter season in Idaho City, taking on the mantle of the coldest month. With temperature figures straddling 19.4°F (-7°C) and 31.3°F (-0.4°C), hard freezes become the norm. An abundance of snowfall returns, setting the stage for winter sports and holiday celebrations. Weather in December »Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The most humid month in Idaho City is January, with an average relative humidity of 85%.
Throughout the year, there are 103.4 rainfall days, and 19.84" (504mm) of precipitation is accumulated.
January through June, October through December are months with snowfall.
January is the month with the most snowfall in Idaho City. Snow falls for 14.8 days and accumulates 20.59" (523mm) of snow.
Throughout the year, there are 79.1 snowfall days, and 88.94" (2259mm) of snow is accumulated.
The month with the lowest UV index is February, with an average maximum UV index of 1.
The month with the most rainfall is March, when the rain falls for 13.4 days and typically aggregates up to 2.83" (72mm) of precipitation.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.
With an average of 15h and 24min of daylight, June has the longest days of the year.
The month of July sees the average highest temperatures, reaching 86.5°F (30.3°C) at the peak and 56.7°F (13.7°C) at the low.
July and August, with an average relative humidity of 33%, are the least humid months.
July is the month with the least rainfall in Idaho City. Rain falls for 5.3 days and accumulates 0.31" (8mm) of precipitation.
July through September are months without snowfall in Idaho City.
July has the most sunshine of the year, with an average of 12.1h of sunshine.
July is the month with the highest UV index, with an average maximum UV index of 6.
In Idaho City, December is the coldest month, with temperatures averaging a high of 31.3°F (-0.4°C) and a low of 19.4°F (-7°C).
The month with the shortest days is December, with an average of 9h and 0min of daylight.
December has the least sunshine of the year in Idaho City, with an average of 5.2h of sunshine.
Average temperature
Idaho City, ID
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is December (31.3°F).
The month with the highest average low temperature is August (56.8°F).
The coldest month (with the lowest average low temperature) is December (19.4°F).
Average pressure
Idaho City, ID
- Average pressure in January:
30.25"Hg - Average pressure in February:
30.13"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.91"Hg - Average pressure in September:
29.95"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.22"Hg
The month with the highest atmospheric pressure is January (30.25"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed
Idaho City, ID
- Average wind speed in January:
4.3mph - Average wind speed in February:
5.1mph - Average wind speed in March:
5.9mph - Average wind speed in April:
6.1mph - Average wind speed in May:
5.6mph - Average wind speed in June:
5.2mph
- Average wind speed in July:
5.2mph - Average wind speed in August:
5mph - Average wind speed in September:
4.8mph - Average wind speed in October:
4.8mph - Average wind speed in November:
5mph - Average wind speed in December:
4.7mph
The windiest month (with the highest average wind speed) is April (6.1mph).
The calmest month (with the lowest average wind speed) is January (4.3mph).
Average humidity
Idaho City, ID
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are July and August (33%).
Average rainfall
Idaho City, ID
- Average rainfall in January:
2.48" - Average rainfall in February:
2.48" - Average rainfall in March:
2.83" - Average rainfall in April:
1.97" - Average rainfall in May:
2.17" - Average rainfall in June:
1.38"
- Average rainfall in July:
0.31" - Average rainfall in August:
0.35" - Average rainfall in September:
0.63" - Average rainfall in October:
1.38" - Average rainfall in November:
1.42" - Average rainfall in December:
2.44"
The wettest month (with the highest rainfall) is March (2.83").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days
Idaho City, ID
- Average rainfall days in January:
4.7 days - Average rainfall days in February:
5.7 days - Average rainfall days in March:
13.4 days - Average rainfall days in April:
13.8 days - Average rainfall days in May:
14.2 days - Average rainfall days in June:
10.3 days
- Average rainfall days in July:
5.3 days - Average rainfall days in August:
5.9 days - Average rainfall days in September:
7.4 days - Average rainfall days in October:
9.1 days - Average rainfall days in November:
7.7 days - Average rainfall days in December:
5.9 days
The month with the highest number of rainy days is May (14.2 days).
The month with the least rainy days is January (4.7 days).
Average snowfall
Idaho City, ID
- Average snowfall in January:
20.59" - Average snowfall in February:
18.98" - Average snowfall in March:
13.31" - Average snowfall in April:
4.61" - Average snowfall in May:
3.39" - Average snowfall in June:
1.14"
The month with the highest snowfall is January (20.59").
The months with the least snowfall are July, August and September (0").
Average snowfall days
Idaho City, ID
- Average snowfall days in January:
14.8 days - Average snowfall days in February:
14 days - Average snowfall days in March:
13.3 days - Average snowfall days in April:
6.3 days - Average snowfall days in May:
2.8 days - Average snowfall days in June:
0.8 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.1 days - Average snowfall days in October:
2.8 days - Average snowfall days in November:
9.8 days - Average snowfall days in December:
14.4 days
The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight / Average sunshine
Idaho City, ID
- Average daylight in January:
9h and 24min - Average daylight in February:
10h and 30min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 30min - Average daylight in May:
14h and 48min - Average daylight in June:
15h and 24min
- Average daylight in July:
15h and 6min - Average daylight in August:
13h and 54min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 42min - Average daylight in December:
9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January:
5h and 18min - Average sunshine in February:
7h and 0min - Average sunshine in March:
7h and 24min - Average sunshine in April:
9h and 6min - Average sunshine in May:
10h and 42min - Average sunshine in June:
11h and 18min
- Average sunshine in July:
12h and 6min - Average sunshine in August:
11h and 18min - Average sunshine in September:
9h and 24min - Average sunshine in October:
7h and 42min - Average sunshine in November:
6h and 12min - Average sunshine in December:
5h and 12min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days
Idaho City, ID
- Average sunshine days in January:
16.8 days - Average sunshine days in February:
13.1 days - Average sunshine days in March:
11.2 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
13.8 days - Average sunshine days in June:
17.8 days
- Average sunshine days in July:
22.3 days - Average sunshine days in August:
21.1 days - Average sunshine days in September:
20.6 days - Average sunshine days in October:
19.3 days - Average sunshine days in November:
16.1 days - Average sunshine days in December:
15.8 days
The month with the most sunshine days is July (22.3 days).
The month with the least sunshine days is March (11.2 days).
Average UV index
Idaho City, ID
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover
Idaho City, ID
The month with the most cloud cover is December (Cloud cover 45).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility
Idaho City, ID
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
