Climate and monthly weather forecastPost Falls, ID

Climate and monthly weather forecast
The climate of Post Falls
Geographically positioned in Idaho, USA, Post Falls experiences a predominant Köppen climate classification of Csb. This represents a Mediterranean climate with warm summers. The yearly weather pattern in Post Falls includes a range of climatological factors.Focusing on temperature, the coolest and warmest months are January and July respectively. Temperatures usually drop to 21.2°F (-6°C) in January while they soar up to 82°F (27.8°C) in July. Over the year, the variation in temperatures is reflective of the weather disparity.
Rainfall shows up across all months, with the wettest month being December at 3.15" (80mm). The driest month shows up in July, presenting merely 0.43" (11mm) rainfall. Post Falls experiences snowfall mostly in winter months, with the highest level of snowfall seen in January at 16.57" (421mm).
The community enjoys optimum daylight hours during June, with the duration stretching up to 15.9 hours. Various weather components paint a vivid picture of Post Falls and play a significant role in determining the best time for visitation.
The best time to visit Post Falls
Considering the diversity of weather conditions, the period between May to August appears to be an ideal time to visit Post Falls. The temperatures during this period range from 52.5°F (11.4°C) to 82°F (27.8°C), making the weather warm but not excessively hot.Coinciding with these comfortable temperatures, the community enjoys extended daylight hours from 13.7 hours in May to 15.5 hours in July. Importantly, rainfall is least from June to August with a minimum value of 0.43" (11mm), making it less probable to experience weather interruptions during outdoor activities.
The worst time to visit Post Falls
The harshness of winter in Post Falls restricts outdoor activities, making the months between December to February less enticing for tourists. With temperatures plunging to 21.2°F (-6°C) in January and snowfall approximating to 16.57" (421mm) in the same month, winter conditions can be quite severe.Visibility during winter is compromised, descending to 3 miles in December and January. These conditions coupled with limited daylight hours of 8.5 hours in December make winter a challenging season for visiting Post Falls.
Spring weather in Post Falls
Springtime in Post Falls extends from March to May. The temperatures steadily rise, moving from 43.2°F (6.2°C) in March to a high of 64.8°F (18.2°C) in May. An increase in daylight hours from 11.9 hours in March to 15.2 hours in May enhances outdoor activities.Spring also sees a drop in rainfall, moving from 2.68" (68mm) in March to 1.77" (45mm) in May. Therefore, this season offers a balance between moderate temperatures and diminished rainfall, making it an enjoyable period in Post Falls.
Summer weather in Post Falls
Summer in Post Falls showcases a blend of long, sunny days and less rainfall. Temperatures during this time range from 70.2°F (21.2°C) in June to a high of 82°F (27.8°C) in July and August.Daylight hours peak in June at 15.9 hours, slowly decreasing to 14.2 hours by August. Consistent with summer characteristics, the rainfall hits the lowest mark from June to August exhibiting a minimum of 0.43" (11mm).
Autumn weather in Post Falls
Autumn presents a cooling trend from September to November, with temperatures dropping from 71.4°F (21.9°C) in September to a chilly 40.5°F (4.7°C) in November. Humidity levels also increase, raising chances of fog or mist.Rainfall progressively increases through autumn, with November recording a high of 2.28" (58mm). Despite these conditions, the moderate temperature range can offer a different type of appeal to some visitors.
Winter weather in Post Falls
Winter in Post Falls is characterized by cold temperature and frequent snowfall. The period spans from December to February with temperatures as low as 21.2°F (-6°C) in January.The snowfall level significantly increases during winter, peaking at 16.57" (421mm) in January. Visibility reduces during winter, matching the reduced daylight hours, which bottom out at 8.5 hours during December. This season is reflective of the typical winter features of a Mediterranean climate.
Weather in January
January ushers in the coldest temperatures in Post Falls, Idaho, with the lowest average low of 21.6°F (-5.8°C). This month is known for its constant snowfall, clear nights showing off brilliant constellations, and shimmering icy landscapes under the crisp winter sun. Weather in January »Weather in February
As February takes over from January, the city of Post Falls bargains a slight respite from the frigid weather while still staying on the colder side. Snow remains a frequent visitor this month; however, the amount of snowfall sees a considerable decrease from the previous month. Weather in February »Weather in March
March in Post Falls delights its inhabitants with clear signals of the impending spring, involving a tangible rise in temperature. A significant reduction in snowfall from 12.24" (311mm) in February to 6.69" (170mm) is noteworthy, indicating the city's transition into warmer weather. Weather in March »Weather in April
April paints the cityscape of Post Falls in the vibrant colors of spring, with temperatures ranging from 32.9°F (0.5°C) to 52.5°F (11.4°C). A notable decrease in the average snowfall to 1.61" (41mm) witnesses the last remnants of winter disappearing. Weather in April »Weather in May
May welcomes summer with an increase in temperature, rendering the weather in Post Falls quite pleasant. The remnants of April's rains give way to dry spells, enhancing the warmth and inviting residents to enjoy the outdoors. It also marks the disappearance of snowfall, with an average of only 0.08" (2mm). Weather in May »Weather in June
June brings a full-blown summer in Post Falls, favoring outdoor activities and leisure. Compared to May, daytime temperatures increase significantly, and the city experiences longer daylight hours. June also witnesses the reduction in snowfall to non-existent levels and decreased rainfall, resulting in dry and agreeable weather. Weather in June »Weather in July
July, the warmest month of the year, enhances the summer vibes in Post Falls with a high average temperature soaring to 81.9°F (27.7°C). The maximum recorded UV index for Post Falls is seen this month, urging residents to take sun protection measures during outdoor activities. Weather in July »Weather in August
In Post Falls, August maintains the warmth from July but with a minimal reduction in temperature. The city's landscapes continue to bask in glorious sunshine, with daylight hours decreasing slightly. August also signifies the end of the summer peak, with residents maximising on outdoor events before fall arrives. Weather in August »Weather in September
September in Post Falls brings in the beautiful hues of fall with a visible drop in temperature. This month records a decrease in the temperature high to 71.4°F (21.9°C) from the scorching 82°F (27.8°C) in August. The city witnesses a short-lived resurgence in rainfall before the drier months of October and November, enhancing the rich autumn colors. Weather in September »Weather in October
October in Post Falls ushers in the distinct chill of fall, preparing residents for the forthcoming winter. This month observes a further decline in temperature, with more rainy days than September. The landscape is covered in a riot of fall colors, making it a pleasant view for residents and visitors alike. Weather in October »Weather in November
November nudges Post Falls deeper into winter, with dropping temperatures and increasing snowfall. November outpaces October by showing an increase in snowfall from 0.43" (11mm) to 4.92" (125mm). The city shrouds itself in a winter blanket, with residents enjoying the first heavy snowfall of the season. Weather in November »Weather in December
December plunges Post Falls into the peak of winter with its coldest temperatures and heaviest snowfall. This month registers a significant jump in snowfall, starkly contrasting November's 4.92" (125mm) with its own hefty 13.66" (347mm). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Post Falls, ID
The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (31.3°F).
The month with the highest average low temperature is August (51.8°F).
The coldest month (with the lowest average low temperature) is December (21.2°F).
Average pressure
Post Falls, ID
- Average pressure in January:
30.19"Hg - Average pressure in February:
30.11"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:
29.92"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.91"Hg - Average pressure in September:
29.96"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 August (29.91"Hg).
Average wind speed
Post Falls, ID
- Average wind speed in January:
4mph - Average wind speed in February:
4.4mph - Average wind speed in March:
4.8mph - Average wind speed in April:
5mph - Average wind speed in May:
4.6mph - Average wind speed in June:
4.6mph
- Average wind speed in July:
4.3mph - Average wind speed in August:
4.1mph - Average wind speed in September:
4.1mph - Average wind speed in October:
4.3mph - Average wind speed in November:
4.2mph - Average wind speed in December:
3.9mph
The windiest month (with the highest average wind speed) is April (5mph).
The calmest month (with the lowest average wind speed) is December (3.9mph).
Average humidity
Post Falls, ID
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (48%).
Average rainfall
Post Falls, ID
- Average rainfall in January:
3.27" - Average rainfall in February:
2.24" - Average rainfall in March:
2.68" - Average rainfall in April:
1.89" - Average rainfall in May:
1.77" - Average rainfall in June:
1.54"
- Average rainfall in July:
0.43" - Average rainfall in August:
0.43" - Average rainfall in September:
0.79" - Average rainfall in October:
2.13" - Average rainfall in November:
2.28" - Average rainfall in December:
3.15"
The wettest month (with the highest rainfall) is January (3.27").
The driest months (with the least rainfall) are July and August (0.43").
Average rainfall days
Post Falls, ID
- Average rainfall days in January:
11.5 days - Average rainfall days in February:
11.2 days - Average rainfall days in March:
17.5 days - Average rainfall days in April:
16.5 days - Average rainfall days in May:
13.3 days - Average rainfall days in June:
12.5 days
- Average rainfall days in July:
5.8 days - Average rainfall days in August:
5.6 days - Average rainfall days in September:
8.4 days - Average rainfall days in October:
13.9 days - Average rainfall days in November:
14.2 days - Average rainfall days in December:
10.8 days
The month with the highest number of rainy days is March (17.5 days).
The month with the least rainy days is August (5.6 days).
Average snowfall
Post Falls, ID
- Average snowfall in January:
16.57" - Average snowfall in February:
12.24" - Average snowfall in March:
6.69" - Average snowfall in April:
1.61" - Average snowfall in May:
0.08" - Average snowfall in June:
0"
The month with the highest snowfall is January (16.57").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Post Falls, ID
- Average snowfall days in January:
16.4 days - Average snowfall days in February:
14.4 days - Average snowfall days in March:
10.1 days - Average snowfall days in April:
3.7 days - Average snowfall days in May:
0.4 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:
0.2 days - Average snowfall days in October:
1 days - Average snowfall days in November:
8.7 days - Average snowfall days in December:
16.9 days
The month with the highest number of snowfall days is December (16.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Post Falls, ID
- Average daylight in January:
8h and 54min - Average daylight in February:
10h and 18min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 42min - Average daylight in May:
15h and 12min - Average daylight in June:
15h and 54min
- Average daylight in July:
15h and 30min - Average daylight in August:
14h and 12min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 48min - Average daylight in November:
9h and 18min - Average daylight in December:
8h and 30min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in January:
3h and 30min - Average sunshine in February:
3h and 42min - Average sunshine in March:
5h and 12min - Average sunshine in April:
8h and 18min - Average sunshine in May:
9h and 48min - Average sunshine in June:
9h and 48min
- Average sunshine in July:
11h and 42min - Average sunshine in August:
11h and 54min - Average sunshine in September:
9h and 48min - Average sunshine in October:
6h and 6min - Average sunshine in November:
4h and 24min - Average sunshine in December:
3h and 24min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days
Post Falls, ID
- Average sunshine days in January:
11 days - Average sunshine days in February:
8.6 days - Average sunshine days in March:
9.1 days - Average sunshine days in April:
10.3 days - Average sunshine days in May:
16.2 days - Average sunshine days in June:
15.8 days
- Average sunshine days in July:
23.9 days - Average sunshine days in August:
22.7 days - Average sunshine days in September:
19.8 days - Average sunshine days in October:
15.7 days - Average sunshine days in November:
10.5 days - Average sunshine days in December:
9.9 days
The month with the most sunshine days is July (23.9 days).
The month with the least sunshine days is February (8.6 days).
Average UV index
Post Falls, ID
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are February, November and December (UV index 1).
Average cloud cover
Post Falls, ID
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility
Post Falls, ID
The months with the highest visibility are May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).





