Climate and monthly weather forecastPreston, ID
Climate and monthly weather forecast
The climate of Preston
Preston, Idaho, USA, falls within Köppen climate classification, Dfb: Humid continental, no dry season, and warm summer. The dominating weather patterns present a myriad of seasonal adjustments. The city sees extreme changes in temperature throughout the year, with the high average temperature peaking at 84.4°F (29.1°C) in July and the low average temperature dropping down to 13.5°F (-10.3°C) in January.There is a significant difference in rainfall during the year, with the lowest average of 0.35" (9mm) in July and the highest average of 2.24" (57mm) in February. Snowfall is mostly restricted to the colder months, starting at 16.73" (425mm) in January and declining to no snowfall from June to September. The months that have snowfall are often accompanied by quite a few days of snowfall, with 17.6 days of snowfall seen in January and 17.3 days in December.
Rainfall days and day length also vary widely throughout the year. The number of rainfall days tends to decrease from 16.6 days in April to 5.5 days in July, before increasing again. Daylight hours range from 9.2 hours in December to 15.2 hours in June. The city also experiences changes in cloud cover, which is highest at 51% in February and lowest at 10% in July and August.
The best time to visit Preston
The optimum time for a visit to Preston would be during the warm summer months from June to August. The average high temperature during this period ranges from 73.6°F (23.1°C) in June to 84.4°F (29.1°C) in July and 82.9°F (28.3°C) in August. Apart from the welcoming warmth, these months also exhibit the least amount of rain, averaging from 0.35" (9mm) to 1.26" (32mm) of rainfall. Additionally, the region enjoys the longest daylight hours, extending from 14.6 hours in May to 15.2 hours in June and 14.9 hours in July.The worst time to visit Preston
Traveling to Preston during the winter months of December, January, and February could be challenging due to the harsh weather conditions. The average high temperatures during these months are on the lower side, from 28.8°F (-1.8°C) in December to a mere 29.1°F (-1.6°C) in January and slightly better 31.6°F (-0.2°C) in February. Furthermore, these months experience the highest levels of snowfall, reaching up to 16.73" (425mm) in January and 12.4" (315mm) in December, respectively.Spring weather in Preston
Spring transforms the weather in Preston from the chilly, snowy conditions of winter to warmer and sunnier days. In March, the average high temperature is 41°F (5°C) and gradually increases to 49.8°F (9.9°C) and 61.2°F (16.2°C) in April and May. Concurrently, snowfall declines from 7.6" (193mm) in March, to 2.8" (71mm) in April, and to a negligible 0.39" (10mm) in May, signifying the retreat of winter. The city receives modest rainfall during spring, ranging from 2.09" (53mm) to 2.17" (55mm).Summer weather in Preston
One finds summer in Preston to be warm, with an average high temperature peaking at 84.4°F (29.1°C) in July from 73.6°F (23.1°C) in June. Rainfall reduces dramatically in summer, reaching the annual low of 0.35" (9mm) in July from 1.26" (32mm) in June. Although daylight hours are longest in the summer, reaching its peak at 15.2 hours in June and gradually reducing to 13.8 hours by August, the city experiences the lowest cloud cover during the summer.Autumn weather in Preston
Autumn brings a crisp chill to Preston, as the high temperatures drop from 72.5°F (22.5°C) in September through 54.7°F (12.6°C) in October and then to 41.2°F (5.1°C) in November. Rainfall increases slightly, touching 1.14" (29mm) in both September and October before reaching 1.26" (32mm) in November. The daylight hours decrease, while cloud cover increases progressively through these months.Winter weather in Preston
Winters in Preston are marked by cold tempretures and heavy snowfall. The average high temperatures drop considerably from 41.2°F (5.1°C) in November to 28.8°F (-1.8°C) in December and 29.1°F (-1.6°C) in January. The city experiences the most substantial snowfall during these months, with December and January recording 12.4" (315mm) and 16.73" (425mm), respectively. The daylight hours are shorter, and clouds cover most of the sky in winter.Weather in January
The beginning of the year in Preston, Idaho, is marked by a chilly, yet humid, weather pattern. A frequent visitor during this month is snowfall, with the city receiving around 16.73" (425mm) of snow across 17.6 days. The daytime temperatures, while on the cooler side, tend not to exceed 29.1°F (-1.6°C), making for brisk, yet manageable outdoor conditions. Weather in January »Weather in February
As winter continues, weather conditions in February in Preston follow a pattern similar to January, albeit with some notable variances. The snowfall begins to decrease this month, although it is still very much a part of everyday living. Weather in February »Weather in March
March ushers in the early hints of the spring season in Preston, Idaho as temperatures start to climb. Residents can expect milder daytime temperatures reaching up to around 41°F (5°C) as winter recedes. The warming trend is further emphasized by increased daylight hours, granting a welcome respite from the long winter evenings. Weather in March »Weather in April
Moving into the fourth month, the weather in Preston, Idaho transforms considerably. Daytime temperatures continue their steady ascent, and this warmer trend coupled with a dip in humidity injects vibrancy into the crisp spring air. Weather in April »Weather in May
May marks the advent of late spring and a noticeable shift in Preston's climate. This month experiences only 0.39" (10mm) of snowfall across a mere 0.6 days, signifying almost an end to the wintry remnants. As temperatures rise, the snow makes way for more rainfall, leading to lush green landscapes. Weather in May »Weather in June
June in Preston, Idaho, rings in the summer with significantly higher temperatures and extended daylight hours. This month is relatively dry, characterized by decreased rainfall and humidity, introducing mid-year aridity. Long summer days allow ample sunlight, imbuing Preston with a hearty dose of robust vitality. Weather in June »Weather in July
In the peak of summer, July sits as the warmest month in Preston, Idaho with temperatures escalating to about 84.4°F (29.1°C) at their highest. The city experiences the longest daylight hours, nearly 15 hours, accentuating its summer vibrancy. Weather in July »Weather in August
August in Preston maintains similar weather patterns to July but begins the subtle shift towards autumn. Despite this, summer continues its reign with ample sunshine and negligible rainfall. Extended hours of sunlight still dominate the day, allowing plenty of opportunities for outdoor pursuits. Weather in August »Weather in September
The transition from summer to fall comes about in September as temperatures begin to recede. This season welcomes a more balanced weather condition with the precipitation levels balancing out at approximately 1.14" (29mm) for the month. Weather in September »Weather in October
The fall season in Preston, Idaho is in full swing during October. With shorter daylight hours and lowering temperatures, residents get the quintessential autumn experience. The city reenters a wetter phase, with regular bouts of rainfall becoming more frequent. Weather in October »Weather in November
As autumn gives way to winter, November in Preston, Idaho manifests a stark change in weather conditions. With a significant dip in temperature, variable wind speeds rise to as high as 5.3mph (8.5km/h). The decrease in daylight hours is notably profound, setting in earlier evenings and later mornings. Weather in November »Weather in December
Finally, December ushers in a full swing of winter in Preston, Idaho. Despite the cold, crisp weather and shorter daylight hours, a unique beauty resides in the town during this time. Snowfall becomes a regular feature alongside falling temperatures, layering the city in a blanket of white. Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Preston, ID
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is December (28.8°F).
The month with the highest average low temperature is July (53.8°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure
Preston, ID
- Average pressure in January:
30.3"Hg - Average pressure in February:
30.16"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.91"Hg - Average pressure in June:
29.89"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.15"Hg - Average pressure in December:
30.25"Hg
The month with the highest atmospheric pressure is January (30.3"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed
Preston, ID
- Average wind speed in January:
4.2mph - Average wind speed in February:
4.8mph - Average wind speed in March:
5.3mph - Average wind speed in April:
5.8mph - Average wind speed in May:
5.5mph - Average wind speed in June:
5.7mph
- Average wind speed in July:
5.4mph - Average wind speed in August:
5.7mph - Average wind speed in September:
5.4mph - Average wind speed in October:
4.8mph - Average wind speed in November:
4.8mph - Average wind speed in December:
4.5mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).
Average humidity
Preston, ID
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (38%).
Average rainfall
Preston, ID
- Average rainfall in January:
2.2" - Average rainfall in February:
2.24" - Average rainfall in March:
2.09" - Average rainfall in April:
2.09" - Average rainfall in May:
2.17" - Average rainfall in June:
1.26"
- Average rainfall in July:
0.35" - Average rainfall in August:
0.51" - Average rainfall in September:
1.14" - Average rainfall in October:
1.14" - Average rainfall in November:
1.26" - Average rainfall in December:
1.81"
The wettest month (with the highest rainfall) is February (2.24").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days
Preston, ID
- Average rainfall days in January:
8.9 days - Average rainfall days in February:
10.9 days - Average rainfall days in March:
15.3 days - Average rainfall days in April:
16.6 days - Average rainfall days in May:
16.5 days - Average rainfall days in June:
9.9 days
- Average rainfall days in July:
5.5 days - Average rainfall days in August:
6.5 days - Average rainfall days in September:
7.5 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
9.7 days - Average rainfall days in December:
9.6 days
The month with the highest number of rainy days is April (16.6 days).
The month with the least rainy days is July (5.5 days).
Average snowfall
Preston, ID
- Average snowfall in January:
16.73" - Average snowfall in February:
12.95" - Average snowfall in March:
7.6" - Average snowfall in April:
2.8" - Average snowfall in May:
0.39" - Average snowfall in June:
0"
The month with the highest snowfall is January (16.73").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Preston, ID
- Average snowfall days in January:
17.6 days - Average snowfall days in February:
17.6 days - Average snowfall days in March:
12.3 days - Average snowfall days in April:
6.5 days - Average snowfall days in May:
0.6 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:
0.1 days - Average snowfall days in October:
2.3 days - Average snowfall days in November:
9.5 days - Average snowfall days in December:
17.3 days
The months with the highest number of snowfall days are January and February (17.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Preston, ID
- Average daylight in January:
9h and 30min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 36min - Average daylight in June:
15h and 12min
- Average daylight in July:
14h and 54min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 48min - Average daylight in December:
9h and 12min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
4h and 48min - Average sunshine in February:
5h and 30min - Average sunshine in March:
7h and 24min - Average sunshine in April:
9h and 42min - Average sunshine in May:
10h and 42min - Average sunshine in June:
11h and 36min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
11h and 54min - Average sunshine in September:
10h and 0min - Average sunshine in October:
7h and 24min - Average sunshine in November:
6h and 30min - Average sunshine in December:
5h and 18min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days
Preston, ID
- Average sunshine days in January:
12.6 days - Average sunshine days in February:
8.3 days - Average sunshine days in March:
8.8 days - Average sunshine days in April:
9.2 days - Average sunshine days in May:
10.1 days - Average sunshine days in June:
16.3 days
- Average sunshine days in July:
21.8 days - Average sunshine days in August:
21.1 days - Average sunshine days in September:
18.8 days - Average sunshine days in October:
18.3 days - Average sunshine days in November:
15.6 days - Average sunshine days in December:
11.2 days
The month with the most sunshine days is July (21.8 days).
The month with the least sunshine days is February (8.3 days).
Average UV index
Preston, ID
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Preston, ID
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility
Preston, 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).





