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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, is another subzero cold winter month in Ketchum, Idaho, with temperature in the range of an average low of 8.4°F (-13.1°C) and an average high of 26.8°F (-2.9°C). As January unfolds, the average high-temperature reaches a still subzero cold 26.8°F (-2.9°C), hinting at a slight fluctuation from the previous month. Weather in January »
Weather in February
The last month of the winter, February, is also a subzero cold month in Ketchum, Idaho, with an average temperature varying between 27°F (-2.8°C) and 10°F (-12.2°C). February brings a marginal elevation to a still subzero cold 27°F (-2.8°C) from January's 26.8°F (-2.9°C) in Ketchum's average high-temperatures. Weather in February »
Weather in March
March, the first month of the spring in Ketchum, is a wintry month, with temperature in the range of an average low of 16.9°F (-8.4°C) and an average high of 32.2°F (0.1°C). Ketchum marks the arrival of March with an average high-temperature of a wintry 32.2°F (0.1°C), hardly different from February's 27°F (-2.8°C). Weather in March »
Weather in April
April, the same as March, is an icy spring month in Ketchum, Idaho, with an average temperature varying between 39.9°F (4.4°C) and 23.4°F (-4.8°C). The shift into April is accompanied by a modest temperature increase, with the average high-temperature edging up from a cold 32.2°F (0.1°C) in March to a still icy 39.9°F (4.4°C). Weather in April »
Weather in May
The last month of the spring, May, is a cool month in Ketchum, Idaho, with an average temperature ranging between max 51.4°F (10.8°C) and min 32.9°F (0.5°C). An increase in the average high-temperature marks May, moving from April's cold 39.9°F (4.4°C) to a cool 51.4°F (10.8°C). Weather in May »
Weather in June
June, the first month of the summer in Ketchum, is an enjoyable month, with an average temperature varying between 62.4°F (16.9°C) and 41.5°F (5.3°C). The shift into June is marked by a rise in the average high-temperature, moving from May's cool 51.4°F (10.8°C) to a comfortable 62.4°F (16.9°C). Weather in June »
Weather in July
July in Ketchum, Idaho, is a moderately hot summer month, with an average temperature ranging between max 74.1°F (23.4°C) and min 50.5°F (10.3°C). July tends to be the warmest month, with temperatures averaging a daily high of 74.1°F (23.4°C) and a low of 50.5°F (10.3°C). Weather in July »
Weather in August
August, the last month of the summer in Ketchum, is another pleasant month, with temperature in the range of an average low of 50.5°F (10.3°C) and an average high of 73.2°F (22.9°C). August brings an average high-temperature of an agreeable 73.2°F (22.9°C), showing a slight difference from July's 74.1°F (23.4°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a comfortable month in Ketchum, Idaho, with temperature in the range of an average high of 63.7°F (17.6°C) and an average low of 43.2°F (6.2°C). Transition from August to September is accompanied by a temperature drop, with average high-temperatures decreasing from a pleasant 73.2°F (22.9°C) to a comfortable 63.7°F (17.6°C). Weather in September »
Weather in October
October, like September, is a frosty autumn month in Ketchum, Idaho, with an average temperature ranging between min 31.1°F (-0.5°C) and max 48°F (8.9°C). The shift from September to October is characterized by a clear decrease in the average high-temperature, reducing from an enjoyable 63.7°F (17.6°C) to a frosty 48°F (8.9°C). Weather in October »
Weather in November
November, the last month of the autumn in Ketchum, is also a wintry month, with an average temperature ranging between max 34.7°F (1.5°C) and min 18.9°F (-7.3°C). Ketchum in November demonstrates a small temperature transition, adjusting from an average high of a chilly 48°F (8.9°C) in October to a cold 34.7°F (1.5°C). Weather in November »
Weather in December
The first month of the winter, December, is still a freezing cold month in Ketchum, Idaho, with an average temperature fluctuating between 8.6°F (-13°C) and 25°F (-3.9°C). Ketchum's December weather, marked by an average high temperature of 25°F (-3.9°C) and an average low temperature of 8.6°F (-13°C), is the coldest in the year. Weather in December »
Updated: Aug 21, 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
How many days does it rain?
In Ketchum, during the entire year, the rain falls for 107.7 days and collects up to 15.63" (397mm) of precipitation.
When does it snow?
Months with snowfall are January through June, September through December.
How much does it snow?
In Ketchum, during the entire year, snow falls for 88.2 days and aggregates up to 69.45" (1764mm) of snow.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 5.7h of sunshine.
What is the most humid month?
With an average relative humidity of 87%, February is the most humid month.
What is the snowiest month?
The month with the most snowfall in Ketchum is February, when snow falls for 15.5 days and typically aggregates up to 15" (381mm) of snow.
What is the month with the lowest UV index?
February is the month with the lowest UV index, with an average maximum UV index of 1.
What is the rainiest month?
March is the month with the most rainfall. Rain falls for 11.4 days and accumulates 2.01" (51mm) of precipitation.
When is Daylight Saving Time (DST)?
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.
When are the longest days?
June has the longest days of the year, with an average of 15h and 24min of daylight.
When is the highest UV index?
The months with the highest UV index are June and July, with an average maximum UV index of 5.
What are the warmest months?
July tends to be the warmest month, with temperatures averaging a daily high of 74.1°F (23.4°C) and a low of 50.5°F (10.3°C).
What is the driest month?
July is the month with the least rainfall. Rain falls for 5.9 days and accumulates 0.43" (11mm) of precipitation.
When it does not snow?
July and August are months without snowfall.
What month has the most sunshine?
With an average of 12h of sunshine, July has the most sunshine of the year.
What is the least humid month?
The least humid month is August, with an average relative humidity of 37%.
What part of the year is the coldest?
Ketchum reaches its average lowest temperatures in December, measuring 25°F (-3.9°C) at the peak and 8.6°F (-13°C) at the lowest.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 0min of daylight.
Average temperature
Ketchum, ID
The warmest month (with the highest average high temperature) is July (74.1°F).
The month with the lowest average high temperature is December (25°F).
The months with the highest average low temperature are July and August (50.5°F).
The coldest month (with the lowest average low temperature) is January (8.4°F).
Average pressure
Ketchum, ID
- Average pressure in January:
30.27"Hg - Average pressure in February:
30.15"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.97"Hg - Average pressure in May:
29.91"Hg - Average pressure in June:
29.89"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.95"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.15"Hg - Average pressure in December:
30.24"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed
Ketchum, ID
- Average wind speed in January:
4.5mph - Average wind speed in February:
5.2mph - Average wind speed in March:
5.5mph - Average wind speed in April:
5.9mph - Average wind speed in May:
5.8mph - Average wind speed in June:
6.2mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
5.9mph - Average wind speed in September:
5.4mph - Average wind speed in October:
5.2mph - Average wind speed in November:
4.8mph - Average wind speed in December:
4.7mph
The windiest month (with the highest average wind speed) is July (6.3mph).
The calmest month (with the lowest average wind speed) is January (4.5mph).
Average humidity
Ketchum, ID
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is August (37%).
Average rainfall
Ketchum, ID
- Average rainfall in January:
1.57" - Average rainfall in February:
1.93" - Average rainfall in March:
2.01" - Average rainfall in April:
1.5" - Average rainfall in May:
1.77" - Average rainfall in June:
1.22"
- Average rainfall in July:
0.43" - Average rainfall in August:
0.51" - Average rainfall in September:
0.87" - Average rainfall in October:
1.06" - Average rainfall in November:
1.1" - Average rainfall in December:
1.65"
The wettest month (with the highest rainfall) is March (2.01").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days
Ketchum, ID
- Average rainfall days in January:
6.2 days - Average rainfall days in February:
7.4 days - Average rainfall days in March:
11.4 days - Average rainfall days in April:
11.9 days - Average rainfall days in May:
14.8 days - Average rainfall days in June:
11.5 days
- Average rainfall days in July:
5.9 days - Average rainfall days in August:
6.5 days - Average rainfall days in September:
8.8 days - Average rainfall days in October:
9.3 days - Average rainfall days in November:
7 days - Average rainfall days in December:
7 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is July (5.9 days).
Average snowfall
Ketchum, ID
- Average snowfall in January:
12.72" - Average snowfall in February:
15" - Average snowfall in March:
12.56" - Average snowfall in April:
5.83" - Average snowfall in May:
1.46" - Average snowfall in June:
0.2"
The month with the highest snowfall is February (15").
The months with the least snowfall are July and August (0").
Average snowfall days
Ketchum, ID
- Average snowfall days in January:
14.1 days - Average snowfall days in February:
15.5 days - Average snowfall days in March:
16 days - Average snowfall days in April:
10.6 days - Average snowfall days in May:
2.8 days - Average snowfall days in June:
0.7 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.5 days - Average snowfall days in October:
3.4 days - Average snowfall days in November:
10.6 days - Average snowfall days in December:
14 days
The month with the highest number of snowfall days is March (16 days).
The months with the least snowfall days are July and August (0 days).
Average daylight / Average sunshine
Ketchum, ID
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 3min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 3min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 2min
- Average daylight in July:
15h and 1min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - 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 4min - Average sunshine in February:
6h and 2min - Average sunshine in March:
7h and 0min - Average sunshine in April:
9h and 4min - Average sunshine in May:
10h and 5min - Average sunshine in June:
11h and 4min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
11h and 5min - Average sunshine in September:
9h and 2min - Average sunshine in October:
7h and 4min - Average sunshine in November:
6h and 4min - Average sunshine in December:
5h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).
Average sunshine days
Ketchum, ID
- Average sunshine days in January:
16.3 days - Average sunshine days in February:
11.7 days - Average sunshine days in March:
11.3 days - Average sunshine days in April:
11.1 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
15.3 days
- Average sunshine days in July:
20.8 days - Average sunshine days in August:
20.6 days - Average sunshine days in September:
19.7 days - Average sunshine days in October:
18.2 days - Average sunshine days in November:
16.7 days - Average sunshine days in December:
15.8 days
The month with the most sunshine days is July (20.8 days).
The month with the least sunshine days is April (11.1 days).
Average UV index
Ketchum, ID
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover
Ketchum, ID
The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 10).
Average visibility
Ketchum, ID
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
Ketchum, Idaho, USA
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