Climate and monthly weather forecastBroomfield, CO
Climate and monthly weather forecast
The climate of Broomfield
Broomfield, Colorado, USA finds itself nestled in the Humid Continental zone, according to the Köppen climate classification. This signifies a weather pattern dominated by no dry season and a largely warm summer, a characteristic of the Dfb subcategory in the Köppen system.The weather in Broomfield, Colorado, offers contrasting experiences throughout the year. The average high temperatures throughout the year range from a chilly 39.4°F (4.1°C) in the month of December to a warm 85.5°F (29.7°C) in July. Broomfield's corresponding low temperature averages hover between 20.7°F (-6.3°C) in February and a slightly tepid 59°F (15°C) in July. A stark variation in temperature, especially present in the warmer months of June, July, and August, offers a diverse climate for residents and visitors alike.
When talking about precipitation, Broomfield experiences a relatively evenly distributed rainfall throughout the year. The months of May and July receive the maximum average rainfall measuring approximately 0.87" (22mm). December records the least rainfall averaging only about 0.2" (5mm). Snowfall, quite predictably, is confined to the cooler months from October to April, with February witnessing the highest average snowfall of 2.68" (68mm).
Another noteworthy feature of the Broomfield climate is its humidity levels. The highest relative humidity is observed in the winter months of January and February, measuring 67%, while the summer months witness considerably lower humidity levels, with July recording the lowest at 44%.
The best time to visit Broomfield
An ideal time to visit Broomfield, Colorado, would be between May to September. During these months, the weather is moderately warm with average high temperatures extending from 66°F (18.9°C) to 84.2°F (29°C). Precipitation remains comparatively moderate, and the humidity hovers on the lower side of the yearly average, making it favourable for outdoor activities. Furthermore, the sunshine hours peak to an average of 11.8 in June, July, and August, ensuring ample daylight to explore the scenic beauty of the region.The worst time to visit Broomfield
The weather between December and February can be quite harsh in Broomfield. The winter months experience prevailingly low temperatures, often dipping to below freezing points averaging 20.7°F (-6.3°C) along with the highest snowfall levels. Moreover, daylight hours are considerably short with an average of 9.4 - 9.7 hours, and the humidity level is high during these months. Therefore, for those not overly fond of cold and wet conditions, this period may not be the most suitable to visit the area.Spring weather in Broomfield
From March to May, Broomfield undergoes a significant transition from winter to summer. The onset of spring brings around an increase in average temperatures, starting from 39.7°F (4.3°C) in March and escalating to 66°F (18.9°C) by the end of May. Precipitation levels rise gradually from 0.43" (11mm) in March to 0.87" (22mm) in May. The relative humidity tends to decrease as spring progresses, moving from 56% in March to 54% in May.Summer weather in Broomfield
The summer months of June, July, and August boast the highest average temperatures in Broomfield, ranging from 81.3°F (27.4°C) to 85.5°F (29.7°C). Corresponding low temperatures elevate to a comfortable level of around 53.8°F (12.1°C) to 59°F (15°C). Precipitation is relatively high, with July experiencing the highest rainfall of 0.87" (22mm). A marked feature of the Broomfield summer is the substantial average daylight hours reaching 15 hours in June, allowing visitors ample time to enjoy their summer activities.Autumn weather in Broomfield
September to November sees Broomfield transition to autumn with decreasing temperatures. While September registers an average high temperature of 76.6°F (24.8°C), by November, this figure decreases to 50°F (10°C). Similarly, the average low temperature descends from 50.7°F (10.4°C) in September to a cooler 28.8°F (-1.8°C) in November. Rainfall during this period decreases gradually from 0.35" (9mm) in September to 0.28" (7mm) in November.Winter weather in Broomfield
Broomfield witnesses its coldest months from December to February, where average high temperatures roam between 39.4°F (4.1°C) to 40.3°F (4.6°C), while correspondingly, low temperatures border around 20.7°F (-6.3°C) to 21.6°F (-5.8°C). Snowfall becomes a regular feature in winter and peaks in February with a maximum average snowfall of 2.68" (68mm). Despite the chill and frost, the winter beauty of Broomfield can indeed be a captivating experience.Weather in January
January comes with a gradual increase in sunlight that reaches a daily average of 7 hours. Broomfield, Colorado experiences both snowfall, with a monthly average of 1.1" (28mm), and rainfall averaging at 0.16" (4mm). The cold January temperatures make it perfect to enjoy winter sports under the relatively low cloud cover. Weather in January »Weather in February
In February, Broomfield’s weather lends itself to the most snowfall; an average of 2.68" (68mm). Visiting tourists should pack warm clothing to accommodate temperatures that differ only slightly from the chilling lows experienced in January. Weather in February »Weather in March
Broomfield welcomes March with noticeably longer daylight hours and an increase in the average high temperatures. The month’s weather signifies the transition from winter to spring as temperatures climb to 50.7°F (10.4°C). The occurrence of snowy days has significantly reduced from February, and rain takes the lead with 0.43" (11mm). Weather in March »Weather in April
The weather in April promotes additional daylight hours, marking a definite shift away from the cold, snowy winter. Broomfield experiences more rainfall, with a monthly average of 0.59" (15mm). April features a maximum average temperature of 57.6°F (14.2°C), showing the transition from the chilly winter to a warmer climate. Weather in April »Weather in May
May proffers sunnier times in Broomfield, complemented by a noticeable rise in temperature. A rise in maximum temperatures to an average of 66°F (18.9°C) signifies the arrival of spring in all its glory. Unpredictably, rainfall also increases during May, with a monthly average of 0.87" (22mm). Weather in May »Weather in June
June in Broomfield brings about long and warm days, with an average high of 81.3°F (27.4°C). The weather remains relatively dry as the city experiences 0.63" (16mm) of rainfall. This drop in precipitation levels, coupled with the increase in air pressure to 29.91in, sets the mood for summertime. Weather in June »Weather in July
July presents Broomfield's warmest weather and the impressive maximum temperature of 85.5°F (29.7°C). The city’s timing of daylight reaches a yearly high of 15 hours, along with an equal amount of sunshine hours as June. Interestingly, rainfall increases to an approximate 0.87" (22mm), specifically during afternoon thunderstorms. Weather in July »Weather in August
August in Broomfield generally brings warm weather, although maximum temperatures drop to 84.2°F (29°C). The month records a marginal decrease in rainfall to 0.55" (14mm), maintaining a low humidity level. Despite a drop in the daylight hours, sunshine remains constant, allowing residents to enjoy outdoor activities. Weather in August »Weather in September
September brings a notable decrease in maximum temperatures in Broomfield with a shift towards cooler climate. This month records lower humidity levels and less rainfall compared to August. Subsequently, September kickstarts the transition into autumn, shedding off highs of summer. Weather in September »Weather in October
October partners with September to bring about the autumnal cool in Broomfield. The average temperature continues to drop to 61°F (16.1°C), making it ideal for enjoying outdoor activities. The winds remain steady, and a decrease in rainfall to 0.35" (9mm) marks a drier climate. Weather in October »Weather in November
The fall fades in November, and winter starts to set foot in Broomfield. The temperature takes a downward trajectory, averaging at a start-of-winter 50°F (10°C). Snow enthusiasts are in for a treat since this month experiences an average of 2.05" (52mm) of snowfall. Weather in November »Weather in December
December marks the full arrival of winter in Broomfield. Hitting the lowest maximum temperature for the year at 39.4°F (4.1°C), December greets residents with a cold and windy climate. Fittingly, it is a month where snowfall valiantly battles with rainfall. Weather in December »Updated: Aug 14, 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
January is the month with the least rainfall. Rain falls for 4.8 days and accumulates 0.16" (4mm) of precipitation.
In Broomfield, during the entire year, the rain falls for 96.7 days and collects up to 5.63" (143mm) of precipitation.
January through May, October through December are months with snowfall.
In Broomfield, during the entire year, snow falls for 36.7 days and aggregates up to 13.98" (355mm) of snow.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
With an average relative humidity of 67%, February is the most humid month.
February is the month with the most snowfall. Snow falls for 8.4 days and accumulates 2.68" (68mm) of snow.
February has the least sunshine of the year, with an average of 6.7h of sunshine.
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.
The months with the most rainfall are May and July, with an average 0.87" (22mm) of precipitation.
June through September are months without snowfall in Broomfield, Colorado.
June has the longest days of the year, with an average of 15h and 0min of daylight.
The months with the most sunshine are June through August, with an average of 11.8h of sunshine.
Broomfield's warmest temperatures are experienced in July, with average high temperatures of 85.5°F (29.7°C) and lows of 59°F (15°C).
July and August, with an average maximum UV index of 6, are months with the highest UV index.
With an average relative humidity of 41%, August is the least humid month.
The coldest time of the year in Broomfield is December, with temperatures averaging a high of 39.4°F (4.1°C) and a low of 20.7°F (-6.3°C).
December has the shortest days of the year, with an average of 9h and 24min of daylight.
Average temperature
Broomfield, CO
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is December (39.4°F).
The month with the highest average low temperature is July (59°F).
The coldest months (with the lowest average low temperature) are February and December (20.7°F).
Average pressure
Broomfield, CO
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30"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:
30.08"Hg - Average pressure in December:
30.12"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
Broomfield, CO
- Average wind speed in January:
6.3mph - Average wind speed in February:
6.3mph - Average wind speed in March:
6.5mph - Average wind speed in April:
6.5mph - Average wind speed in May:
5.8mph - Average wind speed in June:
6mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.7mph - Average wind speed in September:
5.6mph - Average wind speed in October:
5.8mph - Average wind speed in November:
6.2mph - Average wind speed in December:
6mph
The windiest months (with the highest average wind speed) are March and April (6.5mph).
The calmest month (with the lowest average wind speed) is September (5.6mph).
Average humidity
Broomfield, CO
The month with the highest relative humidity is February (67%).
The month with the lowest relative humidity is August (41%).
Average rainfall
Broomfield, CO
- Average rainfall in January:
0.16" - Average rainfall in February:
0.35" - Average rainfall in March:
0.43" - Average rainfall in April:
0.59" - Average rainfall in May:
0.87" - Average rainfall in June:
0.63"
- Average rainfall in July:
0.87" - Average rainfall in August:
0.55" - Average rainfall in September:
0.35" - Average rainfall in October:
0.35" - Average rainfall in November:
0.28" - Average rainfall in December:
0.2"
The wettest months (with the highest rainfall) are May and July (0.87").
The driest month (with the least rainfall) is January (0.16").
Average rainfall days
Broomfield, CO
- Average rainfall days in January:
4.8 days - Average rainfall days in February:
5.6 days - Average rainfall days in March:
8.4 days - Average rainfall days in April:
9.3 days - Average rainfall days in May:
14.4 days - Average rainfall days in June:
9.9 days
- Average rainfall days in July:
13.5 days - Average rainfall days in August:
9.8 days - Average rainfall days in September:
7.7 days - Average rainfall days in October:
4.8 days - Average rainfall days in November:
3.5 days - Average rainfall days in December:
5 days
The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is November (3.5 days).
Average snowfall
Broomfield, CO
The month with the highest snowfall is February (2.68").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Broomfield, CO
- Average snowfall days in January:
5.8 days - Average snowfall days in February:
8.4 days - Average snowfall days in March:
4.8 days - Average snowfall days in April:
3.6 days - Average snowfall days in May:
1.6 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:
2.5 days - Average snowfall days in November:
4.4 days - Average snowfall days in December:
5.6 days
The month with the highest number of snowfall days is February (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Broomfield, 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:
7h and 0min - Average sunshine in February:
6h and 42min - Average sunshine in March:
9h and 0min - Average sunshine in April:
10h and 42min - Average sunshine in May:
11h and 6min - 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:
11h and 6min - Average sunshine in October:
7h and 24min - Average sunshine in November:
7h and 18min - Average sunshine in December:
7h and 0min
The months with the most sunshine are June, July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).
Average sunshine days
Broomfield, CO
- Average sunshine days in January:
23.6 days - Average sunshine days in February:
17.5 days - Average sunshine days in March:
17.7 days - Average sunshine days in April:
15.4 days - Average sunshine days in May:
12 days - Average sunshine days in June:
15.6 days
- Average sunshine days in July:
10 days - Average sunshine days in August:
13.3 days - Average sunshine days in September:
18 days - Average sunshine days in October:
21.8 days - Average sunshine days in November:
23.7 days - Average sunshine days in December:
22.5 days
The month with the most sunshine days is November (23.7 days).
The month with the least sunshine days is July (10 days).
Average UV index
Broomfield, CO
The months with the highest UV index are 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
Broomfield, CO
The months with the most cloud cover are April and May (Cloud cover 26).
The month with the least cloud cover is September (Cloud cover 15).
Average visibility
Broomfield, 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).
