The climate of Challis
In
Challis,
Idaho, the predominant climate is classified as Dfb according to the Köppen system. This refers to a Humid Continental climate that experiences no dry season, with warm summers. Geographically nestled in the mountainous region of central Idaho, Challis is subject to a distinct range of weather conditions throughout the year.
Temperatures over the year fluctuate significantly. The monthly average highs range from 28.4°F (-2°C) in
January to a peak of 76.6°F (24.8°C) in
July. Conversely, the monthly lows show a similar variation, reaching a minimum of 8.1°F (-13.3°C) in January and climbing to a balmy 47.8°F (8.8°C) in
August. Humidity levels generally follow an opposite trend with respect to the temperature, starting at 86% in January, and decreasing to the yearly minimum of 38% during July and August, before climbing back up towards the end of the year.
In terms of precipitation, Challis experiences both rainfall and snowfall. Rainfall is relatively evenly distributed throughout the year, varying from 0.28" (7mm) during the driest month in July to 1.1" (28mm) during the wettest month in
June. Snowfall, on the other hand, is common from
October to
April with peak snowfall of 3.54" (90mm) occurring in
February.
The best time to visit Challis
The best time to visit
Challis primarily depends upon what one prefers in terms of weather conditions. For those who relish warmer temperatures and less humidity,
July seems an ideal time. July offers the highest temperatures with an average high of 76.6°F (24.8°C) and the lowest relative humidity levels at 38%. This month also brings the least amount of rainfall, which facilitates outdoor activities. Moreover, daylight is at its maximum, with 15.2 hours of daylight per day, that invigorates longer exploration durations.
The worst time to visit Challis
Visitors not fond of lower temperatures and significant snowfall should consider avoiding winter months, particularly
January. January averages the lowest temperatures with highs of 28.4°F (-2°C) and lows dipping down to 8.1°F (-13.3°C). January also receives a considerable amount of snowfall with 3.23" (82mm) on average and shorter daylight duration, limiting outdoor activities.
Spring weather in Challis
Spring in
Challis is marked by a gradual warming trend from the winter. During this season,
March to
May, temperatures show an upward movement from an average high of 35.2°F (1.8°C) during March to 54.5°F (12.5°C) in May. Nighttime lows also rise from 18°F (-7.8°C) to 33.4°F (0.8°C) in the same period. The spring witnesses a drop in humidity levels from 82% in March to 61% in May. The amount of rainfall in this season increases slightly from 0.55" (14mm) in March to 0.59" (15mm) in May.
Summer weather in Challis
Summer, from
June to
August, brings the highest temperatures in
Challis. Average highs swing from 65.8°F (18.8°C) in June to a peak of 76.6°F (24.8°C) in
July, before slightly dropping to 75.4°F (24.1°C) in August. Average lows also rise, registering between 40.3°F (4.6°C) to 47.8°F (8.8°C) in these three months. The humidity levels drop significantly, reaching the lowest yearly levels of 38% in July and August. Summer features a surge in rainfall, peaking at 1.1" (28mm) in June, and then drops to 0.31" (8mm) by August.
Autumn weather in Challis
Autumn, encompassing
September through
November, sees
Challis transitioning towards colder temperatures. In this season, the average high drops from 65.7°F (18.7°C) in September to 36.7°F (2.6°C) in November. Similarly, average lows descend from 41.5°F (5.3°C) to 18.9°F (-7.3°C). Humidity begins to rise from 45% in September to 75% in November. The rainfall flutters around 0.5" (13mm) in September and November, with a slightly increased 0.55" (14mm) in
October.
Winter weather in Challis
Winter weather in
Challis, from
December to
February, is characterized by low temperatures and abundant snowfall. Average highs range from 28.4°F (-2°C) in
January to 35.2°F (1.8°C) in February. The average lows are between 8.1°F (-13.3°C) to 18°F (-7.8°C) in these months. The humidity levels are highest during these months, skyrocketing up to 87% in February. Rainfall stays below 0.6" (15mm), but snowfall picks up substantially, reaching a peak of 3.54" (90mm) in February.
Weather in January
In
Challis,
Idaho, winter persists in
January with the coldest temperatures registered. The low temperatures of this month drop to 8.1°F (-13.3°C), making it one of the coldest months. The weather is characterized by a high possibility of snow with frequent snowfall, making it the ideal setting for winter activities.
Weather in January »Weather in February
February in
Challis maintains the winter conditions seen in
January, but with a subtle increase in temperature. The gradual transition from winter to spring is characterized by short-lived snowfalls. February sees the heaviest snowfall of the year, with accumulations reaching 3.54" (90mm).
Weather in February » Weather in March
March exhibits definite signs of change in weather, shifting from the cold grip of winter towards the mildness of spring. The shift is characterized by a decrease in snowfall and a relative increase in rainfall, making it the month with the highest number of rainfall days, 7.4 on average.
Weather in March »
Weather in April
As spring unfolds in
Challis in
April, warmth engulfs the city and the frosty weather of winter becomes a memory. The rains continue in April and combined with warmer temperatures, contribute to the blooming of flora across Challis.
Weather in April »Weather in May
In
May,
Challis experiences a steady climb in temperatures, likely to be the beginning of the summer season. The rainfall quantity drops and is replaced by more hours of sunshine, making it a leisurely period for outdoor activities.
Weather in May »Weather in June
June represents the onset of the peak summer period in
Challis, with temperatures reaching their zenith and rainfall occurrence becoming scant. The soaring temperatures, which can go up to an average high of 65.8°F (18.8°C), coupled with open skies, create the perfect summer setting.
Weather in June »
Weather in July
July is the summit of the summer season in
Challis, where days are hot under clear and sunny skies. This month records the warmest temperatures of the year with an average high at 76.6°F (24.8°C). The weather conditions are dry with exceptionally low humidity levels and minimal clouds.
Weather in July » Weather in August
August in
Challis continues the summer spell with no significant changes in temperature or weather patterns from
July. The average high temperature remains consistent at 75.4°F (24.1°C). Though the rainfall quantity is minimal, it occurs more frequently than in the previous month.
Weather in August » Weather in September
The swing towards fall begins in
September in
Challis with a remarkable drop in temperature and increased cloud cover. The average high temperature falls to 65.7°F (18.7°C), indicating the change from the heat of summer to the coolness of autumn.
Weather in September »
Weather in October
October ensures the full arrival of fall in
Challis with a further decrease in temperature and the dominance of rainfall over snowfall. The coolness sets across the city as temperatures plummet, providing relief from the scorching summer heat.
Weather in October » Weather in November
Come
November,
Challis makes a swift shift from fall to winter. The onset of winter is evident as both the days get shorter and the average high temperature drops to 36.7°F (2.6°C). Rainfall decreases however, snowfall begins to occur, albeit not as intensely as in the ensuing winter months.
Weather in November »Weather in December
December serves as the mid-point of the winter season in
Challis, with a firm grip of cold weather conditions. Temperature continues to drop, reaching a low of 8.6°F (-13°C) in this month. Challis experiences an increase in snowfall with levels reaching 3.03" (77mm).
Weather in December »