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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, the same as December, in Porthill, Idaho, is another subzero cold winter month, with an average temperature fluctuating between 16.3°F (-8.7°C) and 28.4°F (-2°C). January's onset brings an average high-temperature of a still subzero cold 28.4°F (-2°C), showing a minute difference from December's 27.3°F (-2.6°C). Weather in January »
Weather in February
February, the last month of the winter in Porthill, is also a subzero cold month, with temperature in the range of an average low of 16.7°F (-8.5°C) and an average high of 29.8°F (-1.2°C). February's weather displays an average high-temperature of a still freezing cold 29.8°F (-1.2°C), slightly varied from January's 28.4°F (-2°C). Weather in February »
Weather in March
The first month of the spring, March, is an icy month in Porthill, Idaho, with an average temperature varying between 37°F (2.8°C) and 23.7°F (-4.6°C). As March begins, there's a slight increase in the average high-temperature, moving from a freezing cold 29.8°F (-1.2°C) in February to a cold 37°F (2.8°C). Weather in March »
Weather in April
April in Porthill, Idaho, is a chilly spring month, with an average temperature fluctuating between 29.1°F (-1.6°C) and 46°F (7.8°C). April brings an increase in the average high-temperature, progressing from a wintry 37°F (2.8°C) in March to a chilly 46°F (7.8°C). Weather in April »
Weather in May
May, the last month of the spring in Porthill, is a refreshing month, with an average temperature varying between 59.7°F (15.4°C) and 36.7°F (2.6°C). As Porthill, Idaho, enters May, the average high-temperature increases from the a frosty 46°F (7.8°C) of April to a refreshing 59.7°F (15.4°C). Weather in May »
Weather in June
The first month of the summer, June, is a refreshing month in Porthill, Idaho, with temperature in the range of an average low of 42.1°F (5.6°C) and an average high of 65.3°F (18.5°C). Observing a slight rise in June, the average high-temperature shifts from May's mild 59.7°F (15.4°C) to an enjoyable 65.3°F (18.5°C). Weather in June »
Weather in July
July in Porthill, Idaho, is a warm summer month, with an average temperature ranging between max 75.9°F (24.4°C) and min 46.4°F (8°C). As Porthill transitions into July, the average high-temperature shows a change, moving from an enjoyable 65.3°F (18.5°C) in June to a warm 75.9°F (24.4°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Porthill, Idaho, with an average temperature varying between 76.3°F (24.6°C) and 47.7°F (8.7°C). The month of August, characterized by an average high of 76.3°F (24.6°C) and a low of 47.7°F (8.7°C), is recognized as the warmest. Weather in August »
Weather in September
The first month of the autumn, September, is still a refreshing month in Porthill, Idaho, with an average temperature fluctuating between 39.9°F (4.4°C) and 65.8°F (18.8°C). The onset of September coincides with a reduction in the average high-temperature, falling from a warm 76.3°F (24.6°C) in August to an enjoyable 65.8°F (18.8°C). Weather in September »
Weather in October
October, the same as September, in Porthill, Idaho, is a frosty autumn month, with an average temperature fluctuating between 31.5°F (-0.3°C) and 49.1°F (9.5°C). In October, the meteorological conditions markedly change with the average high-temperature descending from an enjoyable 65.8°F (18.8°C) in September to a frosty 49.1°F (9.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is also an icy month in Porthill, Idaho, with an average temperature varying between 23.9°F (-4.5°C) and 34.9°F (1.6°C). November indicates a shift in the average high-temperature, from October's frosty 49.1°F (9.5°C) to a cold 34.9°F (1.6°C). Weather in November »
Weather in December
The first month of the winter, December, is still a freezing cold month in Porthill, Idaho, with temperature in the range of an average low of 16.3°F (-8.7°C) and an average high of 27.3°F (-2.6°C). December, characterized by an average high temperature of 27.3°F (-2.6°C) and a low temperature of 16.3°F (-8.7°C), is generally the coldest month. Weather in December »
Updated: Feb 12, 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
What is the most humid month in Porthill?
January is the most humid month in Porthill, with an average relative humidity of 94%.
How many days does it rain in Porthill?
Throughout the year, in Porthill, Idaho, there are 157.1 rainfall days, and 21.61" (549mm) of precipitation is accumulated.
When does it snow in Porthill?
January through April, September through December are months with snowfall.
When does it snow the most in Porthill?
January is the month with the most snowfall in Porthill, Idaho. Snow falls for 14.2 days and accumulates 11.02" (280mm) of snow.
How much does it snow in Porthill?
In Porthill, Idaho, during the entire year, snow falls for 70.6 days and aggregates up to 41.77" (1061mm) of snow.
What is the month with the least sunshine in Porthill?
January has the least sunshine of the year, with an average of 3.8h of sunshine.
What is the month with the lowest UV index in Porthill?
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Porthill.
When is Daylight Saving Time (DST) in Porthill?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Porthill, 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 it does not snow in Porthill?
May through August are months without snowfall in Porthill, Idaho.
When are the longest days in Porthill?
The month with the longest days is June, with an average of 16h and 6min of daylight.
When is the highest UV index in Porthill?
July is the month with the highest UV index in Porthill, with an average maximum UV index of 5.
What month is the hottest in Porthill?
Porthill notes the warmest temperatures in August, with a average high of 76.3°F (24.6°C) and a low of 47.7°F (8.7°C).
What is the least humid month in Porthill?
With an average relative humidity of 55%, August is the least humid month.
What is the driest month in Porthill?
The month with the least rainfall in Porthill is August, when the rain falls for 6.5 days and typically collects 0.43" (11mm) of precipitation.
What month has the most sunshine in Porthill?
With an average of 11.9h of sunshine, August has the most sunshine of the year in Porthill, Idaho.
What is the coldest month in Porthill?
December, with its high-temperature average of 27.3°F (-2.6°C) and a low-temperature average of 16.3°F (-8.7°C), is the coldest month.
What is the wettest month in Porthill?
December is the month with the most rainfall. Rain falls for 11.8 days and accumulates 2.76" (70mm) of precipitation.
What is the month with the shortest days in Porthill?
The month with the shortest days is December, with an average of 8h and 18min of daylight.
Average temperature
Porthill, ID
The warmest month (with the highest average high temperature) is August (76.3°F).
The month with the lowest average high temperature is December (27.3°F).
The month with the highest average low temperature is August (47.7°F).
The coldest months (with the lowest average low temperature) are January and December (16.3°F).
Average pressure
Porthill, ID
- Average pressure in January:
30.19"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.94"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.98"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.17"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Porthill, ID
- Average wind speed in January:
3.6mph - Average wind speed in February:
3.7mph - Average wind speed in March:
4.2mph - Average wind speed in April:
4.2mph - Average wind speed in May:
4.2mph - Average wind speed in June:
4.3mph
- Average wind speed in July:
4mph - Average wind speed in August:
3.7mph - Average wind speed in September:
3.7mph - Average wind speed in October:
3.7mph - Average wind speed in November:
3.8mph - Average wind speed in December:
3.5mph
The windiest month (with the highest average wind speed) is June (4.3mph).
The calmest month (with the lowest average wind speed) is December (3.5mph).
Average humidity
Porthill, ID
The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (55%).
Average rainfall
Porthill, ID
- Average rainfall in January:
2.72" - Average rainfall in February:
1.81" - Average rainfall in March:
2.52" - Average rainfall in April:
1.97" - Average rainfall in May:
1.89" - Average rainfall in June:
1.57"
- Average rainfall in July:
0.63" - Average rainfall in August:
0.43" - Average rainfall in September:
0.87" - Average rainfall in October:
1.93" - Average rainfall in November:
2.52" - Average rainfall in December:
2.76"
The wettest month (with the highest rainfall) is December (2.76").
The driest month (with the least rainfall) is August (0.43").
Average rainfall days
Porthill, ID
- Average rainfall days in January:
13.2 days - Average rainfall days in February:
10.7 days - Average rainfall days in March:
18.8 days - Average rainfall days in April:
19.7 days - Average rainfall days in May:
16.3 days - Average rainfall days in June:
13.8 days
- Average rainfall days in July:
7.9 days - Average rainfall days in August:
6.5 days - Average rainfall days in September:
9.5 days - Average rainfall days in October:
13.4 days - Average rainfall days in November:
15.5 days - Average rainfall days in December:
11.8 days
The month with the highest number of rainy days is April (19.7 days).
The month with the least rainy days is August (6.5 days).
Average snowfall
Porthill, ID
The month with the highest snowfall is January (11.02").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days
Porthill, ID
- Average snowfall days in January:
14.2 days - Average snowfall days in February:
14.1 days - Average snowfall days in March:
10.3 days - Average snowfall days in April:
4.1 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.3 days - Average snowfall days in October:
1.5 days - Average snowfall days in November:
8.7 days - Average snowfall days in December:
17.4 days
The month with the highest number of snowfall days is December (17.4 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight / Average sunshine
Porthill, ID
- Average daylight in January:
8h and 5min - Average daylight in February:
10h and 1min - Average daylight in March:
11h and 5min - Average daylight in April:
13h and 5min - Average daylight in May:
15h and 2min - Average daylight in June:
16h and 1min
- Average daylight in July:
15h and 4min - Average daylight in August:
14h and 2min - Average daylight in September:
12h and 4min - Average daylight in October:
10h and 5min - Average daylight in November:
9h and 1min - Average daylight in December:
8h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
4h and 1min - Average sunshine in March:
5h and 3min - Average sunshine in April:
8h and 4min - Average sunshine in May:
10h and 1min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
11h and 3min - Average sunshine in August:
11h and 5min - Average sunshine in September:
9h and 4min - Average sunshine in October:
6h and 2min - Average sunshine in November:
4h and 4min - Average sunshine in December:
4h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Porthill, ID
- Average sunshine days in January:
11.5 days - Average sunshine days in February:
9.4 days - Average sunshine days in March:
7.7 days - Average sunshine days in April:
8.1 days - Average sunshine days in May:
12.6 days - Average sunshine days in June:
13.9 days
- Average sunshine days in July:
21.1 days - Average sunshine days in August:
21.8 days - Average sunshine days in September:
18 days - Average sunshine days in October:
15.5 days - Average sunshine days in November:
9.5 days - Average sunshine days in December:
10 days
The month with the most sunshine days is August (21.8 days).
The month with the least sunshine days is March (7.7 days).
Average UV index
Porthill, ID
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover
Porthill, ID
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility
Porthill, ID
The months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (2mi).
Porthill, Idaho, USA
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