Climate and monthly weather forecast
Brighton, CO

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Trees on partly frozen lake water in Barr Lake State Park in Brighton, Colorado
Trees on partly frozen lake water in Barr Lake State Park in Brighton, Colorado

The climate of Brighton

Brighton's geographical placement confirms its Köppen climate classification as BSk. This categorization is indicative of a mid-latitude steppe, offering dry, typically hot summers and mildly cold winters. Analyzing the weather data throughout the course of a year reveals fluctuations in various climatic factors.

Rainfall measures between 0.12" (3mm) and 0.98" (25mm). Precipitation peaks in May, with rainfall reaching 0.98" (25mm), while the driest month is December, with rainfall a mere 0.12" (3mm). Monthly average temperatures vary substantially, ranging from a high of 88.9°F (31.6°C) in July to a low of 21.2°F (-6°C) in December.

Humidity presents a less substantial fluctuation, oscillating between a minimum of 40% in August and a peak of 64% in January and February. Brighton experiences seasonal snowfall predominantly from October to April, with the heaviest snowfall in February weighing in at 1.89" (48mm). Snow-free conditions predominantly prevail from May to September.

The best time to visit Brighton

The ideal period for a visit to Brighton is during the summer months. Average temperatures reach a pleasant between 69.4°F (20.8°C) in May and 88.9°F (31.6°C) in July, providing the perfect environment for outdoor activities. Humidity levels comfortably sit between 42 and 43% from June to July, preventing any damp discomfort. Sunshine hours peak at 11.8 in June and July, maximizing daylight exposure.

The worst time to visit Brighton

Travelers are suggested to avoid Brighton during the depths of winter. The chilly temperatures dip to a low of 21.2°F (-6°C) in December. Reduced daylight hours at 9.4 hours coupled with lower sunshine hours at 6.8 in December do not favor outdoor activities. The increased likelihood of snowfall during winter, with December receiving up to 0.75" (19mm), can disrupt travel plans and limit outdoor experiences.

Spring weather in Brighton

During the spring months, temperatures in Brighton gradually climb from 61.3°F (16.3°C) in April to 69.4°F (20.8°C) in May. Correspondingly, the percentage of cloud coverage decreases from 28 to 26%. The expected rainfall is quite substantial, with measures reaching 0.51" (13mm) in March and 0.98" (25mm) in May. Visitors can expect to enjoy longer daylight hours, expanding from 13.3 to 14.4 hours from April to May.

Summer weather in Brighton

Brighton's summer months are characterized by warm temperatures, generally fluctuating between 84.7°F (29.3°C) in June and 88.2°F (31.2°C) in August. Precipitation levels are relatively high during the early summer months with rainfall reaching 0.94" (24mm) in July. As summer progresses, humidity decreases from 43% in June to 40% in August.

Autumn weather in Brighton

During the autumn months, temperatures in Brighton show a steady decrease from 79.7°F (26.5°C) in September to 52.3°F (11.3°C) in November. Correspondingly, the daylight hours decrease from 12.4 in September to 10 in November. Rainfall during this period reduces from 0.43" (11mm) in both September and October to a mere 0.28" (7mm) in November.

Winter weather in Brighton

Winter in Brighton showcases lower temperatures that range from 40.8°F (4.9°C) in December to 22.8°F (-5.1°C) in January. Cloud coverage increases to 27% in February offering less sunshine hours. Frequency of snowfall intensifies during these winter months with snow reaching up to 1.89" (48mm) in February. Visitors may also experience reduced visibility, with values at 6 miles throughout this season.

Weather in January

Brighton, Colorado's weather in January is winter defined. It features some of the lowest temperature conditions for the year with the mercury dipping to a bracing 22.8°F (-5.1°C). Snowfall is expected, creating a picturesque winter scene. Weather in January »

Weather in February

February continues the chilly trend with temperatures closely mirroring those of January. The month maintains low temperatures in Brighton, registering marginally warmer than the preceding month. An increased snowfall from 1.34" (34mm) to 1.89" (48mm) announces the presence of late winter. Weather in February »

Weather in March

An arrival of March in Brighton signals the onset of spring. With a tangible rise in median temperatures, the city starts to warm up, finding respite from the intense winter chill. Rainfall increases to one of its highest points for the year at 0.51" (13mm), replacing snow as the dominant form of precipitation. Weather in March »

Weather in April

April further accelerates the transition from the chill of winter towards milder temperatures. Brighton experiences a reduced level of humidity, standing at 50% compared to March's 52%, causing a relatively dryer climate. The city sees one of the year's highest levels of rainfall at 0.47" (12mm), providing nourishment for the burgeoning spring flora. Weather in April »

Weather in May

May sees the proper advent of spring in Brighton, with warmer temperatures becoming the norm. One notable change is the increased amount of sunshine Brighton experiences during this month. The weather encourages outdoor activities with rainfall dropping to 0.98" (25mm) from the April showers. Weather in May »

Weather in June

June brings the arrival of summer, allowing Brighton to soak in the warmth. The mercury climbs to its highest at 84.7°F (29.3°C), marking this month out as the start of the hot season. A slight dip in rainfall from 0.98" (25mm) in May to 0.67" (17mm) in June enhances the sunny disposition. Weather in June »

Weather in July

July in Brighton is characterized by the nurturing rays of the summer sun. It hosts the highest temperatures of the year, peaking at an inviting 88.9°F (31.6°C). Despite this, the rainfall is still a notable feature, with a sharp increase to 0.94" (24mm) compared to June's 0.67" (17mm). Weather in July »

Weather in August

August continues the trend of high temperatures in Brighton, only minutely cooler than July's peak. With rainfall decreasing to 0.59" (15mm), the city experiences a drying spell after July's showers. The UV index remains consistent at 6, ensuring sun protection remains vital. Weather in August »

Weather in September

September rings in the transition from the heat of summer to the calm of autumn in Brighton. A perceptible decrease in the average temperature marks the onset of milder weather. There's a notable drop in rainfall, with September receiving 0.43" (11mm), creating a subtle dry spell. Weather in September »

Weather in October

October solidifies the presence of fall, with temperatures taking a major dip from the September readings. October in Brighton witnesses a drop in rainfall to match the cooler conditions. The first snowfall since May occurs this month, transforming the city into a winter wonderland. Weather in October »

Weather in November

November in Brighton sees the transformation into full winter mode. The temperatures drop further, and Brighton experiences its first snowfall days since the warmer months. The wind speed picks up slightly, adding to the chill factor. Weather in November »

Weather in December

December holds the reigns of winter weather, carrying the coldest conditions of the year in Brighton. One of the coldest temperatures marked in December is 21.2°F (-6°C), adding to the freezing charm. Observably, the city sees minimal rainfall, recording the lowest at 0.12" (3mm). Weather in December »
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the most humid months in Brighton?

The months with the highest humidity in Brighton, Colorado, are January and February, with an average relative humidity of 64%.

How much does it rain in Brighton?

Throughout the year, in Brighton, there are 80.6 rainfall days, and 5.87" (149mm) of precipitation is accumulated.

When does it snow in Brighton?

January through May, October through December are months with snowfall in Brighton.

How many days does it snow in Brighton?

Throughout the year, in Brighton, Colorado, there are 30.9 snowfall days, and 11.42" (290mm) of snow is accumulated.

What are the months with the lowest UV index in Brighton?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Brighton.

When does it snow the most in Brighton?

The month with the most snowfall in Brighton is February, when snow falls for 6.8 days and typically aggregates up to 1.89" (48mm) of snow.

What is the month with the least sunshine in Brighton?

With an average of 6.6h of sunshine, February has the least sunshine of the year in Brighton.

When is Daylight Saving Time (DST) in Brighton?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Brighton, 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 wettest month in Brighton?

The month with the most rainfall in Brighton is May, when the rain falls for 10.8 days and typically aggregates up to 0.98" (25mm) of precipitation.

When it does not snow in Brighton?

In Brighton, Colorado, snow does not fall in June through September.

When are the longest days in Brighton?

The month with the longest days is June, with an average of 15h and 0min of daylight.

What are the months with the most sunshine in Brighton?

June and July, with an average of 11.8h of sunshine, are months with the most sunshine.

What are the months with the highest UV index in Brighton?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Brighton, Colorado.

What time of the year is the hottest in Brighton?

Brighton's temperature records reveal July as the warmest month, marked by average highs of 88.9°F (31.6°C) and lows of 61.9°F (16.6°C).

What is the least humid month in Brighton?

The least humid month is August, with an average relative humidity of 40%.

What is the coldest month in Brighton?

Temperature readings reach their annual highs in December, averaging 40.8°F (4.9°C) and a minimum average of 21.2°F (-6°C).

What is the driest month in Brighton?

December is the month with the least rainfall in Brighton, Colorado. Rain falls for 2.6 days and accumulates 0.12" (3mm) of precipitation.

What is the month with the shortest days in Brighton?

With an average of 9h and 24min of daylight, December has the shortest days of the year.

Average temperature
Brighton, CO

Average temperature - Brighton, CO

The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is December (40.8°F).

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is December (21.2°F).

Average pressure
Brighton, CO

Average pressure - Brighton, CO

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed
Brighton, CO

Average wind speed - Brighton, CO

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is December (6mph).

Average humidity
Brighton, CO

Average humidity - Brighton, CO

The months with the highest relative humidity are January and February (64%).
The month with the lowest relative humidity is August (40%).

Average rainfall
Brighton, CO

Average rainfall - Brighton, CO

The wettest month (with the highest rainfall) is May (0.98").
The driest month (with the least rainfall) is December (0.12").

Average rainfall days
Brighton, CO

Average rainfall days - Brighton, CO

The month with the highest number of rainy days is May (10.8 days).
The month with the least rainy days is December (2.6 days).

Average snowfall
Brighton, CO

Average snowfall - Brighton, CO

The month with the highest snowfall is February (1.89").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Brighton, CO

Average snowfall days - Brighton, CO

The month with the highest number of snowfall days is February (6.8 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight / Average sunshine
Brighton, CO

Average daylight / Average sunshine - Brighton, CO

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).

The months with the most sunshine are June and July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).

Average sunshine days
Brighton, CO

Average sunshine days - Brighton, CO

The month with the most sunshine days is December (25.8 days).
The month with the least sunshine days is July (14.8 days).

Average UV index
Brighton, CO

Average UV index - Brighton, 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 visibility
Brighton, CO

Average visibility - Brighton, 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).

Brighton, Colorado, USA

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