Climate and monthly weather forecastRiggins, ID
Climate and monthly weather forecast
The climate of Riggins
Riggins, Idaho, USA falls under the Humid Continental, Dry, Warm Summer category according to the Köppen climate classification. This geographical area remains under the influence of noticeable seasonal variations throughout the year, along with the temperature swinging from a peak of 75.7°F (24.3°C) during summer to a minimum of 12°F (-11.1°C) during winter months.In terms of precipitation, observations reveal patterns that fluctuate throughout the year with July and August being the driest months with rainfall measures down to 0.51" (13mm) and 0.55" (14mm) respectively. On the flip side, the wettest periods occur in January and February with rainfall amounts of 4.06" (103mm) and 4.49" (114mm) respectively.
As the temperature and rainfall oscillate, so does humidity from a high of 94% in February to 48% in July and August. Opposite patterns are observed in daylight hours, offering a maximum of 15.6 hours during the warm months and a minimum of 8.8 hours during the cold ones. Wind speed also witnesses fluctuation, with a range from a high of 6mph (9.7km/h) in February, March, and December, and a low of 5.3mph (8.5km/h) in May, June, August, and September.
The best time to visit Riggins
The period from June through August offers the optimal weather for visiting Riggins. During this time, the weather remains warm with high temperatures hovering around 75.7°F (24.3°C). The nights however are pleasantly cooler, dipping to around 45°F (7.2°C).Daylight hours are also at their peak presenting ample opportunity for outdoor activities. Furthermore, humidity is relatively low and rainfall is scant, with precipitation averaging a mere half an inch during July and August. Consequently, visitors can enjoy uninterrupted outdoor activities during these months.
The worst time to visit Riggins
Visitors might find the winter season, particularly the months of January and February, as less attractive times to visit Riggins. During these months, the region experiences the harshest weather conditions. The temperatures plummet to lows of 12°F (-11.1°C) and 14.4°F (-9.8°C) respectively.These months also witness the highest precipitation in the form of snowfall, with measurements reaching up to 33.78" (858mm) and 36.1" (917mm), leading to potential disruptions in outdoor activities. Furthermore, daylight hours are minimal, hence restricting the duration available for outdoor sightseeing.
Spring weather in Riggins
As winter ends and spring approaches, Riggins sees a gradual rise in temperature during March, April, and May. Average high temperatures climb from 33.4°F (0.8°C) in March to 53.6°F (12°C) in May, whilst the lows oscillate between 18.9°F (-7.3°C) and 31.6°F (-0.2°C) in the same period.Noticeable is the significant upturn in daylight hours reaching 14.9 hours in May. Nonetheless, spring is accompanied by an escalation in rainfall with precipitation peaking to about 3.39" (86mm) in May. Although precipitation is high, snowfall decreases down to 11.5" (292mm) reducing the chances of weather-related disruptions.
Summer weather in Riggins
Summer in Riggins spans June, July, and August, revealing high temperatures that peak at 75.7°F (24.3°C). Interestingly, nights remain cool with minimum temperatures dropping to approximately 45°F (7.2°C), making summer nights quite enjoyable.The season also brings the longest daylight hours, which combined with the high average sunshine duration of 11.6 hours, makes it ideal for outdoor activities. However, summer showers are relatively minimal, with precipitation levels bottoming at 0.51 inch in July, making this season the driest.
Autumn weather in Riggins
Temperatures recede during the autumn months of September, October, and November, with highs falling from 65.7°F (18.7°C) to 34.3°F (1.3°C). The nights become colder as lows descend from 39.7°F (4.3°C) to 20.3°F (-6.5°C). Autumn experiences a progressive increase in precipitation with rainfall rising from 1.06" (27mm) in September to 2.36" (60mm) in November.Simultaneously, snowfall commences with levels escalating to 18.54" (471mm) in November. Despite this increase in precipitation, there is a significant daylight duration and a respectable sunshine duration that remains well above the annual low.
Winter weather in Riggins
Winter in Riggins is characterized by dropping temperatures, resulting in some of the lowest readings of the year. The months of December, January, and February witness high temperatures dropping from 25.3°F (-3.7°C) in December to a chilly 27.1°F (-2.7°C) and 27.9°F (-2.3°C) respectively in the following two months.Rainfall increases to 3.82" (97mm) in December and further to 4.06" (103mm) in January, while snowfall peaks to a high of 36.1" (917mm) in February. Limited daylight of about 9 hours throughout the season, together with limited sunshine hours, characterizes the short winter days. The winter season in Riggins certainly exemplifies a 'winter wonderland', albeit a very cold one.
Weather in January
The January weather in Riggins, Idaho, USA exhibits winter conditions with substantial snowfall. This month sees the temperature plunging, creating a predominantly cool ambiance. Compared to December, the temperature is slightly colder in January. Weather in January »Weather in February
As winter persists in Riggins, February weather conditions remain similar to January, with slightly higher temperatures. Moving from February to March, there's a marked shift in weather patterns. Snowfall substantially decreases in March, giving way to more rainfall. Weather in February »Weather in March
In Riggins, Idaho, the weather in March transitions from winter towards spring. There's a noticeable reduction in snowfall and an increase in rainfall as March progresses, setting the stage for April's even warmer conditions. March handles its transition with a significant 5.3 days of rainfall with an average of 4.29" (109mm). Weather in March »Weather in April
April in Riggins, Idaho, features an evident shift away from winter towards the warmer spring season. Compared to March, this month sees an increase in both average high and low temperatures. Transitioning into May, the weather continues to warm up with declining rain and snowfall levels. Weather in April »Weather in May
May weather in Riggins is markedly warmer, signifying a well-established spring. This is the season when greenery flourishes, augmented by periods of rain. The jump to June's weather has May setting up the hot and dry conditions predominant in summer. Weather in May »Weather in June
June in Riggins welcomes the summer with warmer temperatures and longer daylight hours. Comparing June to May, the rise in temperatures and decreasing rainfall confirms the arrival of summer. As July approaches, the increasing heat becomes even more notable. Weather in June »Weather in July
July experiences the peak of summer in Riggins, Idaho. This month, compared to June, sees a considerable increase in both daylight hours and temperatures. August continues with the similar hot stretches, showing little variation from July's weather patterns. Weather in July »Weather in August
As the dog days persist in August, Riggins, Idaho continues to experience hot and dry conditions. Compared to the climate in July, August sustains the high temperatures while slightly increasing rainfall. As September arrives, there is mild cooling, reflecting the beginnings of the autumn season. Weather in August »Weather in September
September in Riggins sees the onset of autumn alongside remnants of the summer heat. As the month progresses into October, decreasing temperatures signal the transition to fall. The weather in October is notably cooler, amplified by a significant increase in rainfall. Weather in September »Weather in October
October brings in a more definitive fall weather in Riggins, characterized by a drop in temperatures and a rise in rainfall. Going towards November, the weather grows even colder, with temperatures dive considerably. From October to November, rainfall also increases, indicative of the changing seasons. Weather in October »Weather in November
November in Riggins, Idaho experiences a considerable dip in temperature, a demonstration of the impending winter. Comparison between November and October reveals lower temperatures and higher snowfall. As December approaches, the arrival of winter becomes clear. Weather in November »Weather in December
December's weather in Riggins, Idaho brings an undeniable winter climate, complete with declining temperatures and accumulating snow. Compared to November, December shows continuation of the cold trend with increased snowfall. Weather in December »Updated: Jul 16, 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
In Riggins, during the entire year, the rain falls for 81 days and collects up to 32.68" (830mm) of precipitation.
Months with snowfall in Riggins, Idaho, are January through December.
In Riggins, during the entire year, snow falls for 160 days and aggregates up to 210.63" (5350mm) of snow.
With an average of 3.3h of sunshine, January has the least sunshine of the year.
January through April, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Riggins.
The most humid month is February, with an average relative humidity of 94%.
February is the month with the most rainfall. Rain falls for 2.1 days and accumulates 4.49" (114mm) of precipitation.
The month with the most snowfall is February, when snow falls for 22.2 days and typically aggregates up to 36.1" (917mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
June has the longest days of the year, with an average of 15h and 36min of daylight.
In Riggins, July and August are characterised by the peak of temperatures, recording an average high of 75.7°F (24.3°C).
July is the month with the least rainfall. Rain falls for 6.3 days and accumulates 0.51" (13mm) of precipitation.
The month with the most sunshine is July, with an average of 11.6h of sunshine.
With an average maximum UV index of 5, July is the month with the highest UV index.
August is the least humid month, with an average relative humidity of 48%.
The month with the least snowfall is August, when snow falls for 0.3 days and typically aggregates up to 0.08" (2mm) of snow.
December, having an average high-temperature of 25.3°F (-3.7°C) and an average low-temperature of 12.7°F (-10.7°C), is the coldest month.
The month with the shortest days is December, with an average of 8h and 48min of daylight.
Average temperature
Riggins, ID
The warmest months (with the highest average high temperature) are July and August (75.7°F).
The month with the lowest average high temperature is December (25.3°F).
The month with the highest average low temperature is August (45.7°F).
The coldest month (with the lowest average low temperature) is January (12°F).
Average pressure
Riggins, ID
- Average pressure in January:
30.23"Hg - Average pressure in February:
30.13"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
30.01"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.94"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
30.06"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.21"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Riggins, ID
- Average wind speed in January:
5.5mph - Average wind speed in February:
5.9mph - Average wind speed in March:
6mph - Average wind speed in April:
5.5mph - Average wind speed in May:
5.3mph - Average wind speed in June:
5.3mph
- Average wind speed in July:
5.5mph - Average wind speed in August:
5.3mph - Average wind speed in September:
5.3mph - Average wind speed in October:
5.4mph - Average wind speed in November:
5.9mph - Average wind speed in December:
5.9mph
The windiest month (with the highest average wind speed) is March (6mph).
The calmest months (with the lowest average wind speed) are May, June, August and September (5.3mph).
Average humidity
Riggins, ID
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (48%).
Average rainfall
Riggins, ID
- Average rainfall in January:
4.06" - Average rainfall in February:
4.49" - Average rainfall in March:
4.29" - Average rainfall in April:
3.27" - Average rainfall in May:
3.39" - Average rainfall in June:
2.4"
- Average rainfall in July:
0.51" - Average rainfall in August:
0.55" - Average rainfall in September:
1.06" - Average rainfall in October:
2.48" - Average rainfall in November:
2.36" - Average rainfall in December:
3.82"
The wettest month (with the highest rainfall) is February (4.49").
The driest month (with the least rainfall) is July (0.51").
Average rainfall days
Riggins, ID
- Average rainfall days in January:
1.8 days - Average rainfall days in February:
2.1 days - Average rainfall days in March:
5.3 days - Average rainfall days in April:
8.8 days - Average rainfall days in May:
15.3 days - Average rainfall days in June:
12.8 days
- Average rainfall days in July:
6.3 days - Average rainfall days in August:
5.8 days - Average rainfall days in September:
7.7 days - Average rainfall days in October:
8 days - Average rainfall days in November:
3.6 days - Average rainfall days in December:
3.5 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (1.8 days).
Average snowfall
Riggins, ID
- Average snowfall in January:
33.78" - Average snowfall in February:
36.1" - Average snowfall in March:
34.84" - Average snowfall in April:
22.52" - Average snowfall in May:
11.5" - Average snowfall in June:
6.02"
- Average snowfall in July:
0.28" - Average snowfall in August:
0.08" - Average snowfall in September:
2.32" - Average snowfall in October:
12.52" - Average snowfall in November:
18.54" - Average snowfall in December:
32.13"
The month with the highest snowfall is February (36.1").
The month with the least snowfall is August (0.08").
Average snowfall days
Riggins, ID
- Average snowfall days in January:
20.6 days - Average snowfall days in February:
22.2 days - Average snowfall days in March:
24.9 days - Average snowfall days in April:
19.8 days - Average snowfall days in May:
11.5 days - Average snowfall days in June:
4.8 days
- Average snowfall days in July:
0.4 days - Average snowfall days in August:
0.3 days - Average snowfall days in September:
2.9 days - Average snowfall days in October:
12.2 days - Average snowfall days in November:
18.3 days - Average snowfall days in December:
22.1 days
The month with the highest number of snowfall days is March (24.9 days).
The month with the least snowfall days is August (0.3 days).
Average daylight / Average sunshine
Riggins, ID
- Average daylight in January:
9h and 12min - Average daylight in February:
10h and 24min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 36min - Average daylight in May:
14h and 54min - Average daylight in June:
15h and 36min
- Average daylight in July:
15h and 18min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 54min - Average daylight in November:
9h and 30min - Average daylight in December:
8h and 48min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in January:
3h and 18min - Average sunshine in February:
3h and 42min - Average sunshine in March:
4h and 12min - Average sunshine in April:
6h and 12min - Average sunshine in May:
8h and 42min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
11h and 36min - Average sunshine in August:
11h and 12min - Average sunshine in September:
8h and 54min - Average sunshine in October:
6h and 30min - Average sunshine in November:
4h and 36min - Average sunshine in December:
3h and 24min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days
Riggins, ID
- Average sunshine days in January:
11 days - Average sunshine days in February:
6.3 days - Average sunshine days in March:
6.3 days - Average sunshine days in April:
6.9 days - Average sunshine days in May:
8.6 days - Average sunshine days in June:
14.1 days
- Average sunshine days in July:
22.3 days - Average sunshine days in August:
21.9 days - Average sunshine days in September:
18.3 days - Average sunshine days in October:
14.8 days - Average sunshine days in November:
11.4 days - Average sunshine days in December:
9 days
The month with the most sunshine days is July (22.3 days).
The months with the least sunshine days are February and March (6.3 days).
Average UV index
Riggins, ID
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, November and December (UV index 1).
Average cloud cover
Riggins, ID
The month with the most cloud cover is February (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility
Riggins, ID
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).
