Annual mean 15°C · wettest around May · prevailing wind SW
Warmest
30.4 °C
Coldest
4.3 °C
Wettest
42%
Windiest
5.5 m/s
Prevailing
SW
4.3 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Siloam Springs over the whole year is 15°C. July is the hottest month, with highs of about 30°C; January is the coldest, with lows of about -1°C. Siloam Springs has no sharply defined rainy season: the chance of rain on a given day runs from 33% in September, the driest month, to 42% in May, the wettest. Winds in Siloam Springs are highest in March, averaging 4.0 m/s (14 km/h), and lightest in September, at 2.2 m/s (8 km/h). The prevailing wind is from the SW. The clearest skies in Siloam Springs come in September, when the sky is typically 23% covered; February is the cloudiest month, at 43%.
Month by month Siloam Springs climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
6°C
-1°C
0°C
36%
42%
3.3 m/s
2
0
21
February
9°C
2°C
4°C
36%
43%
3.7 m/s
11
0
37
March
14°C
7°C
10°C
38%
41%
4.0 m/s
25
1
60
April
18°C
10°C
14°C
39%
40%
3.8 m/s
50
4
69
May
23°C
15°C
21°C
42%
39%
2.9 m/s
66
31
49
June
28°C
20°C
29°C
36%
24%
2.6 m/s
31
64
9
July
30°C
22°C
32°C
36%
23%
2.4 m/s
13
53
2
August
29°C
21°C
31°C
36%
24%
2.3 m/s
22
57
4
September
28°C
18°C
28°C
33%
23%
2.2 m/s
45
60
20
October
21°C
11°C
18°C
36%
30%
2.8 m/s
57
20
57
November
14°C
6°C
10°C
35%
32%
3.0 m/s
26
1
60
December
9°C
3°C
4°C
35%
39%
3.2 m/s
7
0
37
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Siloam Springs weather by season
Year round, Siloam Springs has days of about 6°C at their warmest in January, its coolest month, and 30°C in July, its warmest; the coolest hours of the day run from -1°C to 22°C through the year, and the average temperature over the year is 15°C around the clock. Rain is most likely around May and least likely around September. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Siloam Springs weather in winterDecember to February
High 8°CLow 1°CRain 36%
Winter in Siloam Springs has typical daily highs of about 8°C and lows of about 1°C, with a 36% chance of rain on a given day.
Siloam Springs weather in springMarch to May
High 18°CLow 11°CRain 40%
Spring in Siloam Springs has typical daily highs of about 18°C and lows of about 11°C, with a 40% chance of rain on a given day.
Siloam Springs weather in summerJune to August
High 29°CLow 21°CRain 36%
Summer in Siloam Springs has typical daily highs of about 29°C and lows of about 21°C, with a 36% chance of rain on a given day.
Siloam Springs weather in autumnSeptember to November
High 21°CLow 11°CRain 35%
Autumn in Siloam Springs has typical daily highs of about 21°C and lows of about 11°C, with a 35% chance of rain on a given day.
When is the rainy season in Siloam Springs?
Siloam Springs has no sharply defined rainy season: the chance of rain on a given day runs from 33% in September, the driest month, to 42% in May, the wettest.
What time of year is Siloam Springs windiest?
Winds in Siloam Springs are highest in March, averaging 4.0 m/s (14 km/h), and lightest in September, at 2.2 m/s (8 km/h). The prevailing wind is from the SW.
What is the average temperature in Siloam Springs year round?
The average temperature in Siloam Springs over the whole year is 15°C. July is the hottest month, with highs of about 30°C; January is the coldest, with lows of about -1°C.