Climate and monthly weather forecastSouthglenn, CO
Climate and monthly weather forecast
Weather in January
January, the same as December, is another cold winter month in Southglenn, Colorado, with an average temperature ranging between min 22.1°F (-5.5°C) and max 42.1°F (5.6°C). As January takes its course, Southglenn's average high-temperature registers at a still icy 42.1°F (5.6°C), closely aligning with the preceding month. Weather in January »Weather in February
The last month of the winter, February, is also a wintry month in Southglenn, Colorado, with temperature in the range of an average low of 21.6°F (-5.8°C) and an average high of 42.1°F (5.6°C). With the onset of February, the average high-temperature stands at a still wintry 42.1°F (5.6°C), in line with the previous month's conditions. Weather in February »Weather in March
The first month of the spring, March, is a fresh month in Southglenn, Colorado, with temperature in the range of an average high of 53.2°F (11.8°C) and an average low of 30.7°F (-0.7°C). Noticing a change, the average high-temperature during March moves from February's icy 42.1°F (5.6°C) to a cool 53.2°F (11.8°C). Weather in March »Weather in April
April in Southglenn, Colorado, is a moderate spring month, with an average temperature fluctuating between 59.2°F (15.1°C) and 34.9°F (1.6°C). The shift into April is accompanied by a modest temperature increase, with the average high-temperature edging up from a cool 53.2°F (11.8°C) in March to a refreshing 59.2°F (15.1°C). Weather in April »Weather in May
May, the last month of the spring in Southglenn, is a comfortable month, with an average temperature ranging between max 67.8°F (19.9°C) and min 43.3°F (6.3°C). Southglenn's weather in May shows a minor rise in the average high-temperature, moving slightly up from April's moderate 59.2°F (15.1°C) to a still refreshing 67.8°F (19.9°C). Weather in May »Weather in June
June, the first month of the summer in Southglenn, is a warm month, with an average temperature fluctuating between 82.6°F (28.1°C) and 55°F (12.8°C). June marks a distinct rise in the average high-temperature, ascending from May's enjoyable 67.8°F (19.9°C) to a moderately hot 82.6°F (28.1°C). Weather in June »Weather in July
July in Southglenn, Colorado, is a hot summer month, with temperature in the range of an average high of 86.2°F (30.1°C) and an average low of 59.7°F (15.4°C). Southglenn reaches its highest average temperatures in July, measuring 86.2°F (30.1°C) at the peak and 59.7°F (15.4°C) at the lowest. For July, the heat index is computed to be a tropical 86°F (30°C). Weather in July »Weather in August
August, the last month of the summer in Southglenn, is another warm month, with an average temperature fluctuating between 85.1°F (29.5°C) and 58.8°F (14.9°C). The shift into August finds Southglenn at an average high-temperature of a moderately hot 85.1°F (29.5°C), closely comparable to July's conditions. Weather in August »Weather in September
September, the first month of the autumn in Southglenn, is also a moderately hot month, with temperature in the range of an average low of 52.7°F (11.5°C) and an average high of 78.1°F (25.6°C). A subtle shift in Southglenn's weather is observed as August turns into September, with the average high temperature reducing from a warm 85.1°F (29.5°C) to a still moderately hot 78.1°F (25.6°C). Weather in September »Weather in October
October, like September, in Southglenn, Colorado, is another enjoyable autumn month, with an average temperature ranging between min 39.2°F (4°C) and max 62.6°F (17°C). With the onset of October, Southglenn's average high-temperature experiences a noticeable drop, receding from September's moderately hot 78.1°F (25.6°C) to an enjoyable 62.6°F (17°C). Weather in October »Weather in November
The last month of the autumn, November, is another cool month in Southglenn, Colorado, with an average temperature fluctuating between 52°F (11.1°C) and 30.2°F (-1°C). The arrival of November indicates a decrease in the average high-temperature, moving from a refreshing 62.6°F (17°C) in October to a fresh 52°F (11.1°C). Weather in November »Weather in December
The first month of the winter, December, is also a wintry month in Southglenn, Colorado, with an average temperature fluctuating between 41°F (5°C) and 21°F (-6.1°C). In Southglenn, Colorado, the lowest temperatures are generally noted in December, averaging a high of 41°F (5°C) and a low of 21°F (-6.1°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Southglenn, CO
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is December (41°F).
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is December (21°F).
Average pressure
Southglenn, CO
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
29.99"Hg - Average pressure in April:
29.91"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
30.01"Hg - Average pressure in August:
30.01"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are April and June (29.91"Hg).
Average wind speed
Southglenn, CO
- Average wind speed in January:
6.4mph - Average wind speed in February:
6.6mph - Average wind speed in March:
7mph - Average wind speed in April:
7.2mph - Average wind speed in May:
6.5mph - Average wind speed in June:
6.6mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6.2mph - Average wind speed in September:
6.2mph - Average wind speed in October:
6.3mph - Average wind speed in November:
6.3mph - Average wind speed in December:
6.2mph
The windiest month (with the highest average wind speed) is April (7.2mph).
The calmest months (with the lowest average wind speed) are August, September and December (6.2mph).
Average humidity
Southglenn, CO
The month with the highest relative humidity is February (65%).
The months with the lowest relative humidity are June and August (41%).
Average rainfall
Southglenn, CO
- Average rainfall in January:
0.08" - Average rainfall in February:
0.16" - Average rainfall in March:
0.31" - Average rainfall in April:
0.24" - Average rainfall in May:
0.47" - Average rainfall in June:
0.31"
- Average rainfall in July:
0.51" - Average rainfall in August:
0.28" - Average rainfall in September:
0.12" - Average rainfall in October:
0.2" - Average rainfall in November:
0.16" - Average rainfall in December:
0.08"
The wettest month (with the highest rainfall) is July (0.51").
The driest months (with the least rainfall) are January and December (0.08").
Average rainfall days
Southglenn, CO
- Average rainfall days in January:
2.3 days - Average rainfall days in February:
1.8 days - Average rainfall days in March:
4.3 days - Average rainfall days in April:
6 days - Average rainfall days in May:
6.3 days - Average rainfall days in June:
5.5 days
- Average rainfall days in July:
8.3 days - Average rainfall days in August:
5.4 days - Average rainfall days in September:
3.6 days - Average rainfall days in October:
2.9 days - Average rainfall days in November:
1.7 days - Average rainfall days in December:
2.5 days
The month with the highest number of rainy days is July (8.3 days).
The month with the least rainy days is November (1.7 days).
Average snowfall
Southglenn, CO
- Average snowfall in January:
0.67" - Average snowfall in February:
1.14" - Average snowfall in March:
1.42" - Average snowfall in April:
1.02" - Average snowfall in May:
0.91" - Average snowfall in June:
0"
The month with the highest snowfall is March (1.42").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Southglenn, CO
- Average snowfall days in January:
3.1 days - Average snowfall days in February:
4.4 days - Average snowfall days in March:
2.9 days - Average snowfall days in April:
2.8 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 days - Average snowfall days in October:
1.6 days - Average snowfall days in November:
2.6 days - Average snowfall days in December:
3 days
The month with the highest number of snowfall days is February (4.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Southglenn, CO
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
14h and 54min
- Average daylight in July:
14h and 36min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
7h and 6min - Average sunshine in February:
6h and 54min - Average sunshine in March:
9h and 6min - Average sunshine in April:
10h and 54min - Average sunshine in May:
11h and 24min - Average sunshine in June:
11h and 54min
- Average sunshine in July:
11h and 54min - Average sunshine in August:
11h and 48min - Average sunshine in September:
11h and 6min - Average sunshine in October:
7h and 30min - Average sunshine in November:
7h and 18min - Average sunshine in December:
7h and 0min
The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 54min).
Average sunshine days
Southglenn, CO
- Average sunshine days in January:
27.5 days - Average sunshine days in February:
23.5 days - Average sunshine days in March:
24.9 days - Average sunshine days in April:
21.9 days - Average sunshine days in May:
21.9 days - Average sunshine days in June:
21.1 days
- Average sunshine days in July:
19.7 days - Average sunshine days in August:
21.6 days - Average sunshine days in September:
23.7 days - Average sunshine days in October:
27 days - Average sunshine days in November:
26.3 days - Average sunshine days in December:
28.3 days
The month with the most sunshine days is December (28.3 days).
The month with the least sunshine days is July (19.7 days).
Average UV index
Southglenn, CO
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Southglenn, CO
The month with the most cloud cover is April (Cloud cover 25).
The month with the least cloud cover is September (Cloud cover 14).
Average visibility
Southglenn, CO
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).





