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Contents
- The climate of Dillon
- The best time to visit Dillon
- The worst time to visit Dillon
- Spring weather in Dillon
- Summer weather in Dillon
- Autumn weather in Dillon
- Winter weather in Dillon
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The brown and golden trees near the iconic Dillon reservoir in Colorado
The climate of Dillon
Dillon, a mountain town located in Colorado, exhibits a predominately Subarctic climate as classified by the Köppen climate classification. It is specifically designated as Dfc which indicates a severe winter, lack of a dry season, and a cool summer. Variations in weather parameters throughout different times of the year are characteristic of this climate type.
Over the year, Dillon experiences considerable temperature fluctuations with lows close to freezing at 0.9°F (-17.3°C) in winter to summer highs scaling up to 67.1°F (19.5°C). Relative humidity ranges from 53% in the summer months to a peak of 88% in February. Throughout the year, Dillon maintains a monthly average atmospheric pressure close to 30 in, which slightly ebbs and flows. The town also enjoys various degrees of daylight starting from 9.4 hours and reaching up to 14.9 hours during the summer solstice.
Rainfall increases during the summer months peaking at 3.39" (86mm) in July. Conversely, snowfall is more common during the freezing periods of the year with February reporting an average of over 12" (305mm). Winds present moderately throughout the year, with average speeds of 6.2mph (10km/h) to 7mph (11.3km/h). The gusts, on the other hand, can reach 10.5mph (16.9km/h) in December.
Over the year, Dillon experiences considerable temperature fluctuations with lows close to freezing at 0.9°F (-17.3°C) in winter to summer highs scaling up to 67.1°F (19.5°C). Relative humidity ranges from 53% in the summer months to a peak of 88% in February. Throughout the year, Dillon maintains a monthly average atmospheric pressure close to 30 in, which slightly ebbs and flows. The town also enjoys various degrees of daylight starting from 9.4 hours and reaching up to 14.9 hours during the summer solstice.
Rainfall increases during the summer months peaking at 3.39" (86mm) in July. Conversely, snowfall is more common during the freezing periods of the year with February reporting an average of over 12" (305mm). Winds present moderately throughout the year, with average speeds of 6.2mph (10km/h) to 7mph (11.3km/h). The gusts, on the other hand, can reach 10.5mph (16.9km/h) in December.
The best time to visit Dillon
The best time for a visit to Dillon largely depends on the kind of experience and weather conditions a traveler prefers. For those seeking warm weather, June to August offers the most ideal temperatures, ranging from 62.8°F (17.1°C) to 67.1°F (19.5°C). Additionally, June stands out for having the longest daylight hours at 14.9 hours with abundant sunshine for about 11.4 hours.
The worst time to visit Dillon
If not accustomed to harsh and freezing conditions, the months of December and January should be avoided when temperatures can plummet to as low as 0.9°F (-17.3°C). Additionally, these months have shorter daylight durations averaging around 9.4 to 10 hours, reducing the amount of time one can participate in outdoor activities.
Spring weather in Dillon
In Dillon, spring spans March to May. Temperature begin to climb, with highs ranging from 30.4°F (-0.9°C) to 46.8°F (8.2°C) and lows increasing from 8.2°F (-13.2°C) to 23.7°F (-4.6°C). It is noticeably drier in the early spring with relative humidity taking a sharp dip to 70% by May. Rainfall sees a considerable increase from 1.97" (50mm) in March to 2.99" (76mm) in May.
Summer weather in Dillon
With warm weather from June to August, summer becomes a pleasant time to be in Dillon. Temperatures peak with highs reaching 67.1°F (19.5°C) and lows of 39.7°F (4.3°C). The weather tends to become drier during the summer months with the relative humidity dropping down to 53% in June. Average rainfall during summer stands at 2.93" (74mm) and snow is almost negligible.
Autumn weather in Dillon
Bracing through the autumn months of September to November, Dillon experiences a steady decrease in temperatures from 58.5°F (14.7°C) down to 32.4°F (0.2°C) with corresponding lows dropping from 33.4°F (0.8°C) to 11.1°F (-11.6°C) by the end of November. The drop in temperature is coupled with an increase in relative humidity, going from 58% to 75%.
Winter weather in Dillon
December ushers in winter in Dillon, which continues till February. This season is characterized by extreme cold and snowy conditions. Temperatures plunge to their lowest with average highs not exceeding 30.4°F (-0.9°C) and lows reaching freezing levels. Snowfall measures significantly high - ranging from 8.74" (222mm) in November to a hefty 18.27 inch in April - making it a popular season for winter sports enthusiasts.
Weather in January
January in Dillon, Colorado experiences regular snowfall with a monthly accumulation of 8.5" (216mm). This chilly month begins the calendar year with white landscapes, offering a serene, frosty spectacle. The relatively lower sunshine hours contribute to a cooler month, making it perfect for various winter activities. Weather in January »
Weather in February
Moving into February, Dillon continues to be a winter wonderland with temperatures remaining low. The snowfall shows an increment, reaching 12.72" (323mm). Being the coldest month, Dillon looks like a picture out of a snow-globe postcard, adding charm to the city. Weather in February »
Weather in March
Coming into March, the weather remains snowy, accumulating up to 15.91" (404mm) of excitement for the winter sports enthusiasts. Despite this, an unmistakable hint of spring is in the air as the daylight hours start to lengthen. Dillon, in its semi-frozen state, prepares for the upcoming spring. Weather in March »
Weather in April
In April, the snowfall reaches its peak at 18.27" (464mm), indicating the last surge of winter before giving way to spring. Dillon blossoms as the warmer temperatures start to melt the winter snow pack. April often sees rain replacing snow as the major form of precipitation. Weather in April »
Weather in May
May marks the decrease in snowfall to 16.61" (422mm), paving the way for warmer days. Dillon embraces spring in all its glory, as days get longer and life blooms freely around the town. The lingering chill in the air gradually disappears, with temperatures becoming more comfortable. Weather in May »
Weather in June
As the calendar rolls to June, the snowfall is reduced substantially to 4.96" (126mm). The freshness of Dillon in June attracts hikers and nature lovers. Long daylight hours announce the onset of summer, painting a tranquil canvas of vivid greens and blue skies. Weather in June »
Weather in July
July, the heart of the summer season, sees the least snowfall, reaching a negligible accumulation of 0.47" (12mm). Dillon experiences its warmest temperatures at this time of year, drawing in people seeking sun-brushed landscapes. Weather in July »
Weather in August
August continues the dwindling trend of snowfall, with a barely noticeable 0.55" (14mm). August is a month of serene weather and sparkling blue skies in Dillon. The lake waters appear inviting, promising a delightful swim or a peaceful boating experience. Weather in August »
Weather in September
In September, Dillon experiences unexpected weather modifications, with snowfall observing a slight increase to 1.97" (50mm). This unexpected snow signifies the imminent arrival of autumn. With the trees flaunting shades of red, orange, and gold, the town turns into an artist's dream. Weather in September »
Weather in October
October signifies a drastic change in weather as snowfall touches 10.35" (263mm). The leaves start shedding, painting a beautiful carpet of vibrant hues across Dillon. As the month progresses, fall slowly merges into winter. Outdoor activities shift focus from hiking trails towards winter sports, with the early snow making the conditions ideal. Weather in October »
Weather in November
November weather leads us deeper into winter, with snowfall registering at 8.74" (222mm). This month is characterized by its whispering winds and bare treetops. As winter strengthens its grasp, the calendar is filled with upcoming festive events. Weather in November »
Weather in December
As the year concludes, December presents Dillon under a pristine snow blanket accumulating up to 9.49" (241mm). The festive spirit is in the air, and snow-covered landscapes create an enchanting aura. The winding down of the year is marked by cooler temperatures, plenty of snowfall, and a remarkable number of daylight hours. Weather in December »
Updated: Jul 13, 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
What is the driest month?
The month with the least rainfall is January, when the rain falls for 3.4 days and typically collects 1.06" (27mm) of precipitation.
How much does it rain?
Throughout the year, there are 111.5 rainfall days, and 23.19" (589mm) of precipitation is accumulated.
When does it snow in Dillon?
Months with snowfall in Dillon are January through December.
How many days does it snow?
Throughout the year, there are 149 snowfall days, and 108.54" (2757mm) of snow is accumulated.
What is the most humid month in Dillon?
The most humid month is February, with an average relative humidity of 88%.
What is the month with the least sunshine?
The month with the least sunshine is February, with an average of 5.4h of sunshine.
What is the month with the lowest UV index?
The months with the lowest UV index are February, November and December, with an average maximum UV index of 1.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.
What is the snowiest month in Dillon?
April is the month with the most snowfall. Snow falls for 21 days and accumulates 18.27" (464mm) of snow.
What is the least humid month?
The least humid month is June, with an average relative humidity of 53%.
When are the longest days in Dillon?
The month with the longest days is June, with an average of 14h and 54min of daylight.
What month has the most sunshine in Dillon?
The month with the most sunshine is June, with an average of 11.4h of sunshine.
What is the warmest month?
July proves to be the warmest month, recording an average peak temperature of 67.1°F (19.5°C) and a minimum temperature of 39.7°F (4.3°C).
What is the rainiest month?
July is the month with the most rainfall. Rain falls for 22.7 days and accumulates 3.39" (86mm) of precipitation.
When it does not snow?
The month with the least snowfall is July, when snow falls for 1.8 days and typically aggregates up to 0.47" (12mm) of snow.
What is the month with the highest UV index?
July and August, with an average maximum UV index of 4, are months with the highest UV index.
What is the coldest time of year?
Dillon witnesses the coldest weather in December, with temperatures averaging a high of 22.5°F (-5.3°C) and a low of 0.9°F (-17.3°C).
What is the month with the shortest days in Dillon?
The month with the shortest days is December, with an average of 9h and 24min of daylight.
Average temperature
Dillon, CO
The warmest month (with the highest average high temperature) is July (67.1°F).
The month with the lowest average high temperature is December (22.5°F).
The month with the highest average low temperature is July (39.7°F).
The coldest month (with the lowest average low temperature) is December (0.9°F).
Average pressure
Dillon, CO
- Average pressure in January:
30.19"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
30.05"Hg - Average pressure in August:
30.05"Hg - Average pressure in September:
30.04"Hg - Average pressure in October:
30.06"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.16"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is April (29.93"Hg).
Average wind speed
Dillon, CO
- Average wind speed in January:
6.7mph - Average wind speed in February:
7mph - Average wind speed in March:
6.5mph - Average wind speed in April:
6.5mph - Average wind speed in May:
6.2mph - Average wind speed in June:
6.5mph
- Average wind speed in July:
5mph - Average wind speed in August:
4.9mph - Average wind speed in September:
5.3mph - 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 February (7mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity
Dillon, CO
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is June (53%).
Average rainfall
Dillon, CO
- Average rainfall in January:
1.06" - Average rainfall in February:
1.61" - Average rainfall in March:
1.97" - Average rainfall in April:
2.44" - Average rainfall in May:
2.99" - Average rainfall in June:
2.24"
- Average rainfall in July:
3.39" - Average rainfall in August:
2.17" - Average rainfall in September:
1.54" - Average rainfall in October:
1.46" - Average rainfall in November:
1.14" - Average rainfall in December:
1.18"
The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days
Dillon, CO
- Average rainfall days in January:
3.4 days - Average rainfall days in February:
3.8 days - Average rainfall days in March:
4.8 days - Average rainfall days in April:
6.7 days - Average rainfall days in May:
13.3 days - Average rainfall days in June:
13.3 days
- Average rainfall days in July:
22.7 days - Average rainfall days in August:
18.1 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
5.8 days - Average rainfall days in November:
2.8 days - Average rainfall days in December:
4.3 days
The month with the highest number of rainy days is July (22.7 days).
The month with the least rainy days is November (2.8 days).
Average snowfall
Dillon, CO
- Average snowfall in January:
8.5" - Average snowfall in February:
12.72" - Average snowfall in March:
15.91" - Average snowfall in April:
18.27" - Average snowfall in May:
16.61" - Average snowfall in June:
4.96"
- Average snowfall in July:
0.47" - Average snowfall in August:
0.55" - Average snowfall in September:
1.97" - Average snowfall in October:
10.35" - Average snowfall in November:
8.74" - Average snowfall in December:
9.49"
The month with the highest snowfall is April (18.27").
The month with the least snowfall is July (0.47").
Average snowfall days
Dillon, CO
- Average snowfall days in January:
15.8 days - Average snowfall days in February:
18.8 days - Average snowfall days in March:
18.4 days - Average snowfall days in April:
21 days - Average snowfall days in May:
18.1 days - Average snowfall days in June:
6.7 days
- Average snowfall days in July:
1.8 days - Average snowfall days in August:
2.2 days - Average snowfall days in September:
5.8 days - Average snowfall days in October:
11.5 days - Average snowfall days in November:
12.2 days - Average snowfall days in December:
16.7 days
The month with the highest number of snowfall days is April (21 days).
The month with the least snowfall days is July (1.8 days).
Average daylight / Average sunshine
Dillon, CO
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 2min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 2min
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:
5h and 3min - Average sunshine in February:
5h and 2min - Average sunshine in March:
7h and 3min - Average sunshine in April:
8h and 4min - Average sunshine in May:
10h and 1min - Average sunshine in June:
11h and 2min
- Average sunshine in July:
11h and 1min - Average sunshine in August:
11h and 1min - Average sunshine in September:
10h and 4min - Average sunshine in October:
6h and 5min - Average sunshine in November:
6h and 4min - Average sunshine in December:
5h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 24min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).
Average sunshine days
Dillon, CO
- Average sunshine days in January:
15.6 days - Average sunshine days in February:
9.3 days - Average sunshine days in March:
11.4 days - Average sunshine days in April:
7.2 days - Average sunshine days in May:
7.1 days - Average sunshine days in June:
10.3 days
- Average sunshine days in July:
5.3 days - Average sunshine days in August:
7.3 days - Average sunshine days in September:
12.6 days - Average sunshine days in October:
16.7 days - Average sunshine days in November:
17.5 days - Average sunshine days in December:
14.5 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is July (5.3 days).
Average UV index
Dillon, CO
The months with the highest UV index are July and August (UV index 4).
The months with the lowest UV index are February, November and December (UV index 1).
Average cloud cover
Dillon, CO
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 19).
Average visibility
Dillon, CO
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).
Dillon, Colorado, USA
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