Climate and monthly weather forecastSiloam Springs, AR
Climate and monthly weather forecast
The climate of Siloam Springs
Siloam Springs, situated in Arkansas, USA, is graced by a climate category specified as Cfa by the Köppen Classification. This refers to a Humid subtropical climate, marked by no dry season. Throughout the year, there is considerable variation in temperature, humidity level, and overall weather conditions.Monthly average high temperatures range from a cool 44.4°F (6.9°C) in January to a hot 90°F (32.2°C) in July. Low temperatures also show diverse readings, fluctuating between a cold 28.8°F (-1.8°C) in January and a warm 69.8°F (21°C) in July. Humidity lies within the moderate level throughout the year, with slight monthly variations from 71% to 78%. Thus, the weather alternates between the cold and warmth, with an overarching subtropical tone.
On average, Siloam Springs sees 8 days to a high of 16.8 days of rainfall across the months. The wettest month is May with 4.17" (106mm) of rain, while the driest month is February with 1.73" (44mm) of rainfall. Snowfall, although a rare occurrence, does feature in the winter months from December to February, with January witnessing an average of 1.14" (29mm) of snow.
The best time to visit Siloam Springs
Upon evaluating the climate and weather elements of Siloam Springs, the greater part of the year could provide comfortable conditions for visitors. For those who enjoy the warm sunshine, June with an average sunshine duration of 10.4 hours per day could prove ideal. Summertime in Siloam Springs features high temperatures reaching up to 90°F (32.2°C) and relatively less rainfall as compared to other months. Hence, the period from June to August would serve as a great time to enjoy outdoor activities and explore the area.The worst time to visit Siloam Springs
The adverse weather conditions during winter make it the less preferred time for a visit to Siloam Springs. January is the coldest month with temperatures dropping as low as 28.8°F (-1.8°C). Additionally, the snowfall in January and February adds to the winter severity. For those not keen on experiencing the cold and snow, it would be best to avoid this period while planning a trip.Spring weather in Siloam Springs
March marks the commencement of spring in Siloam Springs, bringing in a significant escalation in temperature. The maximum averages escalate from 58.6°F (14.8°C) in March to a pleasant 76.5°F (24.7°C) in May, with minimum temperatures ranging between 41.4°F (5.2°C) and 57.6°F (14.2°C). Rainfall is fairly distributed, varying from 3.19" (81mm) in March to a high of 4.17" (106mm) in May. On the whole, residents witness a considerable amount of precipitation and moderate temperatures during the spring season.Summer weather in Siloam Springs
The summer months in Siloam Springs tend to be warm with temperatures soaring to a high 90°F (32.2°C) in July. There is ample sunshine, with an average peak of 10.7 hours per day in August. Humidity levels can reach up to 74% in June, but July and August register lower humidity levels of 72% and 71% respectively, offering a respite from the heat. Rainfall dwindles during this season, with June at 2.68" (68mm), down to 3.23" (82mm) in July and 3.66" (93mm) in August.Autumn weather in Siloam Springs
Autumn in Siloam Springs transitions from the hot summers to the cold winters. September kicks off with high temperatures around 81.7°F (27.6°C), which gradually descend to a milder 57.2°F (14°C) by November. Low temperatures follow a similar dropping trend from 61.7°F (16.5°C) in September to 40.1°F (4.5°C) in November. Rainfall remains relatively steady, from 2.76" (70mm) in September to 2.05" (52mm) by November. The days are less sunny than the summer months with decreasing sunshine duration from 9.4 hours in September to 5.8 hours in November.Winter weather in Siloam Springs
Winter in Siloam Springs is predominantly cold. High temperatures in December average 47.1°F (8.4°C) and decline to the year's low average of 44.4°F (6.9°C) in January while minimum temperatures drop to 32.2°F (0.1°C) in December and further dip to an average of 28.8°F (-1.8°C) in January. Snowfall occasionally decorates the winter landscape, with January and February witnessing 1.14" (29mm) and 1.1" (28mm) respectively. Winter days are shorter with sunlight duration reducing to 5.8 hours in December and reaching the year's lowest at 5.4 hours in January.Weather in January
The first month of the year is typically quite cold in Siloam Springs with temperatures hovering around freezing points. Snowfall is not uncommon but is relatively light, with stable pressure conditions reigning supreme. The city welcomes the new year under mostly cloudy skies, reflecting the average cloud coverage of 40%. Weather in January »Weather in February
A slightly warmer trend is noticeable as Siloam Springs heads into February, although the weather remains decisively on the winter side. Sun faithfuls start getting their share of sunlight with average sunshine duration starting to increase. Weather in February »Weather in March
By March, Siloam Springs embraces a decisive turn toward spring, with temperatures climbing and the city getting greener. The warming trend combined with moisture brought by increased rainfall of 3.19" (81mm) livens up the landscapes. Weather in March »Weather in April
Arriving at April, Siloam Springs experiences definitive spring weather. Rainfall can peak at 3.43" (87mm), the most for any spring month, making it a crucial period for local flora and fauna. The climb in humidity points toward the impending summer but is still comfortable prompting residents to engage in outdoor activities. Weather in April »Weather in May
May ushers in the start of summer in Siloam Springs with higher temperatures settling in. The city gets doused with the highest rainfall of the year, peaking at 4.17" (106mm), giving a tropical twist to the otherwise temperate climate. Weather in May »Weather in June
The heart of summer pulses in June in Siloam Springs bringing with it the highest temperatures of the year. All vestiges of snow have long vanished, leaving the city entirely in the grip of summer. Cypress trees sway in the steady breeze giving respite from the heat. Weather in June »Weather in July
July in Siloam Springs continues in the same elegant summer style, with temperatures slightly rising to a peak of 90°F (32.2°C). Despite the rise, the city doesn't shy away from maintaining its green attire, thanks to the considerable rainfall received, this time measured at 3.23" (82mm). Weather in July »Weather in August
The last leg of summer in August sees temperatures in Siloam Springs maintain the heat rhythm, just a notch lower than July. Precipitation fluctuates again, reaching 3.66" (93mm), perhaps nature's reminder of the upcoming transition to a cooler season. Weather in August »Weather in September
Siloam Springs bids farewell to summer and welcomes the gentler climate of autumn in September. The withdrawal of summer heat and the incoming coolness bring about dramatic hues in the local flora. Rain marginally decreases to 2.76" (70mm), creating balance in the environment and aiding the seasonal change. Weather in September »Weather in October
October in Siloam Springs highlights the essence of autumn, characterized by cooler temperatures and vibrant colors. The humidity level remains relatively constant, providing the distinct crispiness to the autumn air. Rainfall records a significant increase to 2.99" (76mm), bringing in a fresh and crisp feel to the weather. Weather in October »Weather in November
November forms the tail-end of Autumn, introducing chillier temperatures and darker evenings in Siloam Springs. The shortening days provide less sunshine while rainfall reduces to 2.05" (52mm), indicating the initial switch to winter. Weather in November »Weather in December
December makes its entrance with undeniable winter charm, driving temperatures even lower in Siloam Springs. Relative humidity maintains balance, offsetting the dryness usually associated with the cold season. The end of the year brings the highest recorded snowfall of 0.59" (15mm), truing up to the winter season. Weather in December »Updated: Aug 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
The month of January sees the average lowest temperatures, reaching 44.4°F (6.9°C) at the peak and 28.8°F (-1.8°C) at the low.
Throughout the year, there are 156 rainfall days, and 34.41" (874mm) of precipitation is accumulated.
January through March, May, November and December are months with snowfall.
In Siloam Springs, Arkansas, during the entire year, snow falls for 12.2 days and aggregates up to 4.21" (107mm) of snow.
The months with the least sunshine are January and December, with an average of 5.4h of sunshine.
January and December, with an average maximum UV index of 2, are months with the lowest UV index.
The month with the least rainfall is February, when the rain falls for 9.2 days and typically collects 1.73" (44mm) of precipitation.
February is the month with the most snowfall. Snow falls for 3.3 days and accumulates 1.14" (29mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
In Siloam Springs, snow does not fall in April, June through October.
The most humid month is May, with an average relative humidity of 78%.
The month with the most rainfall is May, when the rain falls for 16.8 days and typically aggregates up to 4.17" (106mm) of precipitation.
The month with the longest days is June, with an average of 14h and 36min of daylight.
The month with the highest UV index in Siloam Springs is June, with an average maximum UV index of 7.
In Siloam Springs, the peak average temperatures are observed in July, with a high of 90°F (32.2°C) and a low of 69.8°F (21°C).
August and October, with an average relative humidity of 71%, are the least humid months.
With an average of 10.7h of sunshine, August has the most sunshine of the year.
The month with the shortest days is December, with an average of 9h and 42min of daylight.
Average temperature
Siloam Springs, AR
The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (44.4°F).
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure
Siloam Springs, AR
- Average pressure in January:
30.17"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are April and June (29.93"Hg).
Average wind speed
Siloam Springs, AR
- Average wind speed in January:
9.3mph - Average wind speed in February:
9.6mph - Average wind speed in March:
10.2mph - Average wind speed in April:
10.4mph - Average wind speed in May:
9mph - Average wind speed in June:
7.9mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.8mph - Average wind speed in September:
7.2mph - Average wind speed in October:
8.6mph - Average wind speed in November:
9.5mph - Average wind speed in December:
8.8mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity
Siloam Springs, AR
The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are August and October (71%).
Average rainfall
Siloam Springs, AR
- Average rainfall in January:
2.4" - Average rainfall in February:
1.73" - Average rainfall in March:
3.19" - Average rainfall in April:
3.43" - Average rainfall in May:
4.17" - Average rainfall in June:
2.68"
- Average rainfall in July:
3.23" - Average rainfall in August:
3.66" - Average rainfall in September:
2.76" - Average rainfall in October:
2.99" - Average rainfall in November:
2.05" - Average rainfall in December:
2.13"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is February (1.73").
Average rainfall days
Siloam Springs, AR
- Average rainfall days in January:
8.8 days - Average rainfall days in February:
9.2 days - Average rainfall days in March:
14.9 days - Average rainfall days in April:
15.9 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
14.7 days
- Average rainfall days in July:
16.8 days - Average rainfall days in August:
15.6 days - Average rainfall days in September:
13.7 days - Average rainfall days in October:
11.6 days - Average rainfall days in November:
9.1 days - Average rainfall days in December:
8.9 days
The months with the highest number of rainy days are May and July (16.8 days).
The month with the least rainy days is January (8.8 days).
Average snowfall
Siloam Springs, AR
The month with the highest snowfall is February (1.14").
The months with the least snowfall are April, June, July, August, September and October (0").
Average snowfall days
Siloam Springs, AR
- Average snowfall days in January:
3.3 days - Average snowfall days in February:
3.3 days - Average snowfall days in March:
1.5 days - Average snowfall days in April:
0.3 days - Average snowfall days in May:
0.3 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:
0.1 days - Average snowfall days in November:
0.9 days - Average snowfall days in December:
2.4 days
The months with the highest number of snowfall days are January and February (3.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Siloam Springs, AR
- Average daylight in January:
10h and 0min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
14h and 6min - Average daylight in June:
14h and 36min
- Average daylight in July:
14h and 18min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 18min - Average daylight in December:
9h and 42min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January:
5h and 24min - Average sunshine in February:
5h and 42min - Average sunshine in March:
6h and 30min - Average sunshine in April:
8h and 6min - Average sunshine in May:
8h and 48min - Average sunshine in June:
10h and 24min
- Average sunshine in July:
10h and 36min - Average sunshine in August:
10h and 42min - Average sunshine in September:
9h and 24min - Average sunshine in October:
6h and 6min - Average sunshine in November:
5h and 48min - Average sunshine in December:
5h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days
Siloam Springs, AR
- Average sunshine days in January:
18.7 days - Average sunshine days in February:
15.1 days - Average sunshine days in March:
13.9 days - Average sunshine days in April:
12.7 days - Average sunshine days in May:
12.2 days - Average sunshine days in June:
12.4 days
- Average sunshine days in July:
11.2 days - Average sunshine days in August:
12.7 days - Average sunshine days in September:
14.4 days - Average sunshine days in October:
17.3 days - Average sunshine days in November:
18.5 days - Average sunshine days in December:
19 days
The month with the most sunshine days is December (19 days).
The month with the least sunshine days is July (11.2 days).
Average UV index
Siloam Springs, AR
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover
Siloam Springs, AR
The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility
Siloam Springs, AR
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
