Climate and monthly weather forecastNelson, CO
Climate and monthly weather forecast
Weather in January
January, the same as December, is a wintry winter month in Nelson, Colorado, with an average temperature fluctuating between 23.5°F (-4.7°C) and 39.6°F (4.2°C). The arrival of January records an average high-temperature of a still cold 39.6°F (4.2°C), closely related to the 38.7°F (3.7°C) observed in December. Weather in January »Weather in February
February, the last month of the winter in Nelson, is also a wintry month, with an average temperature fluctuating between 24.3°F (-4.3°C) and 41.9°F (5.5°C). February's average high-temperature stands at a still wintry 41.9°F (5.5°C), showing little deviation from January's 39.6°F (4.2°C). Weather in February »Weather in March
The first month of the spring, March, is a fresh month in Nelson, Colorado, with an average temperature fluctuating between 54.9°F (12.7°C) and 34.3°F (1.3°C). The arrival of March sees a shift in the average high-temperature, moving from a wintry 41.9°F (5.5°C) in February to a fresh 54.9°F (12.7°C). Weather in March »Weather in April
April is a moderate spring month in Nelson, Colorado, with an average temperature ranging between max 60.6°F (15.9°C) and min 39.6°F (4.2°C). A gentle upsurge in temperatures occurs as March gives way to April, with average highs shifting from a cool 54.9°F (12.7°C) to a mild 60.6°F (15.9°C). Weather in April »Weather in May
May, the last month of the spring in Nelson, is a pleasant month, with an average temperature ranging between max 69.3°F (20.7°C) and min 47.3°F (8.5°C). With the onset of May, Nelson's weather sees a minor temperature rise, transitioning from a moderate 60.6°F (15.9°C) in April to a pleasant 69.3°F (20.7°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Nelson, Colorado, with an average temperature varying between 59.5°F (15.3°C) and 83.8°F (28.8°C). An increase in the average high-temperature marks June, surging from May's agreeable 69.3°F (20.7°C) to a moderately hot 83.8°F (28.8°C). Weather in June »Weather in July
July is a hot summer month in Nelson, Colorado, with an average temperature fluctuating between 65.3°F (18.5°C) and 88.7°F (31.5°C). In Nelson, the highest average temperatures are observed in July, with a high of 88.7°F (31.5°C) and a low of 65.3°F (18.5°C). July's mean heat index is appraised at a hot 91.4°F (33°C). Weather in July »Weather in August
The last month of the summer, August, is another tropical month in Nelson, Colorado, with an average temperature ranging between max 86.7°F (30.4°C) and min 63°F (17.2°C). Nelson starts August with an average high-temperature of a still hot 86.7°F (30.4°C), hinting at a minimal fluctuation from July. Weather in August »Weather in September
September, the first month of the autumn in Nelson, is also a moderately hot month, with an average temperature fluctuating between 56.3°F (13.5°C) and 79.5°F (26.4°C). September heralds a minor drop in average high-temperature, sliding from August's hot 86.7°F (30.4°C) to a moderately hot 79.5°F (26.4°C). Weather in September »Weather in October
October, like September, in Nelson, Colorado, is another refreshing autumn month, with an average temperature varying between 42.6°F (5.9°C) and 62.8°F (17.1°C). With the onset of October, Nelson experiences a distinct temperature drop, with the average high-temperature reducing from September's warm 79.5°F (26.4°C) to a refreshing 62.8°F (17.1°C). Weather in October »Weather in November
November, the last month of the autumn in Nelson, is also a fresh month, with an average temperature fluctuating between 32.5°F (0.3°C) and 50.9°F (10.5°C). Nelson's average high-temperature decreases in November, falling from an enjoyable 62.8°F (17.1°C) in October to a cool 50.9°F (10.5°C). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in Nelson, Colorado, with an average temperature ranging between min 22.5°F (-5.3°C) and max 38.7°F (3.7°C). December is Nelson's coldest month, registering average high temperatures of 38.7°F (3.7°C) and lows of 22.5°F (-5.3°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Nelson, CO
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is December (38.7°F).
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is December (22.5°F).
Average pressure
Nelson, CO
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
29.96"Hg - Average pressure in April:
29.88"Hg - Average pressure in May:
29.89"Hg - Average pressure in June:
29.85"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.94"Hg - Average pressure in September:
29.95"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.05"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed
Nelson, CO
- Average wind speed in January:
8mph - Average wind speed in February:
8.9mph - Average wind speed in March:
9.8mph - Average wind speed in April:
10.6mph - Average wind speed in May:
9.4mph - Average wind speed in June:
8.9mph
- Average wind speed in July:
8.2mph - Average wind speed in August:
8.2mph - Average wind speed in September:
8.5mph - Average wind speed in October:
8.8mph - Average wind speed in November:
8.2mph - Average wind speed in December:
7.8mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is December (7.8mph).
Average humidity
Nelson, CO
The month with the highest relative humidity is January (64%).
The months with the lowest relative humidity are August and September (45%).
Average rainfall
Nelson, CO
- Average rainfall in January:
0.39" - Average rainfall in February:
0.51" - Average rainfall in March:
1.18" - Average rainfall in April:
1.1" - Average rainfall in May:
2.2" - Average rainfall in June:
1.42"
- Average rainfall in July:
1.85" - Average rainfall in August:
1.14" - Average rainfall in September:
0.71" - Average rainfall in October:
0.75" - Average rainfall in November:
0.43" - Average rainfall in December:
0.39"
The wettest month (with the highest rainfall) is May (2.2").
The driest months (with the least rainfall) are January and December (0.39").
Average rainfall days
Nelson, CO
- Average rainfall days in January:
4.4 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
8.8 days - Average rainfall days in April:
11.5 days - Average rainfall days in May:
14 days - Average rainfall days in June:
11.8 days
- Average rainfall days in July:
14.4 days - Average rainfall days in August:
10.3 days - Average rainfall days in September:
8.5 days - Average rainfall days in October:
7.1 days - Average rainfall days in November:
2.9 days - Average rainfall days in December:
5 days
The month with the highest number of rainy days is July (14.4 days).
The month with the least rainy days is November (2.9 days).
Average snowfall
Nelson, CO
- Average snowfall in January:
2.13" - Average snowfall in February:
2.64" - Average snowfall in March:
1.89" - Average snowfall in April:
1.69" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is February (2.64").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Nelson, CO
- Average snowfall days in January:
7.3 days - Average snowfall days in February:
8.1 days - Average snowfall days in March:
3.8 days - Average snowfall days in April:
2.9 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 days - Average snowfall days in October:
2.2 days - Average snowfall days in November:
3.4 days - Average snowfall days in December:
5.8 days
The month with the highest number of snowfall days is February (8.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Nelson, CO
- Average daylight in January:
9h and 42min - 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:
15h and 0min
- Average daylight in July:
14h and 42min - 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: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
6h and 42min - Average sunshine in February:
6h and 30min - Average sunshine in March:
8h and 36min - Average sunshine in April:
10h and 24min - Average sunshine in May:
10h and 48min - Average sunshine in June:
11h and 48min
- Average sunshine in July:
11h and 48min - Average sunshine in August:
11h and 48min - Average sunshine in September:
10h and 36min - Average sunshine in October:
7h and 36min - Average sunshine in November:
7h and 6min - Average sunshine in December:
6h and 30min
The months with the most sunshine are June, July and August (Average sunshine: 11h and 48min).
The months with the least sunshine are February and December (Average sunshine: 6h and 30min).
Average sunshine days
Nelson, CO
- Average sunshine days in January:
20.8 days - Average sunshine days in February:
17.1 days - Average sunshine days in March:
18.5 days - Average sunshine days in April:
15 days - Average sunshine days in May:
14.3 days - Average sunshine days in June:
15.6 days
- Average sunshine days in July:
12.8 days - Average sunshine days in August:
17.1 days - Average sunshine days in September:
18.6 days - Average sunshine days in October:
20.9 days - Average sunshine days in November:
23.4 days - Average sunshine days in December:
22.8 days
The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is July (12.8 days).
Average UV index
Nelson, 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
Nelson, CO
The month with the most cloud cover is February (Cloud cover 31).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility
Nelson, 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).





