Climate and monthly weather forecast
Westminster, CO

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Weather in January

January, the same as December, is a wintry winter month in Westminster, Colorado, with an average temperature fluctuating between 41.9°F (5.5°C) and 22.8°F (-5.1°C). The commencement of January brings an average high-temperature of a still icy 41.9°F (5.5°C), marking an inconsequential divergence from December. Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in Westminster, Colorado, with temperature in the range of an average low of 21.9°F (-5.6°C) and an average high of 42.1°F (5.6°C). The arrival of February denotes a barely perceptible change in the average high-temperatures to a still wintry 42.1°F (5.6°C) from January's 41.9°F (5.5°C). Weather in February »

Weather in March

The first month of the spring, March, is a fresh month in Westminster, Colorado, with an average temperature ranging between min 31.3°F (-0.4°C) and max 53.2°F (11.8°C). In March, the average high-temperature increases from a cold 42.1°F (5.6°C) in February to a cool 53.2°F (11.8°C). Weather in March »

Weather in April

April in Westminster, Colorado, is a moderate spring month, with temperature in the range of an average low of 35.6°F (2°C) and an average high of 59.7°F (15.4°C). The shift from March to April sees a slight increase in the average high-temperature, transitioning from a cool 53.2°F (11.8°C) to a moderate 59.7°F (15.4°C). Weather in April »

Weather in May

May, the last month of the spring in Westminster, is a pleasant month, with temperature in the range of an average high of 68°F (20°C) and an average low of 43.5°F (6.4°C). Westminster experiences a minor temperature shift with the start of May, with average high-temperatures moving from a moderate 59.7°F (15.4°C) in April to a pleasant 68°F (20°C). Weather in May »

Weather in June

June, the first month of the summer in Westminster, is a warm month, with temperature in the range of an average low of 55.6°F (13.1°C) and an average high of 83.1°F (28.4°C). June is characterized by a clear rise in the average high-temperature, escalating from May's pleasant 68°F (20°C) to a warm 83.1°F (28.4°C). Weather in June »

Weather in July

July is a hot summer month in Westminster, Colorado, with temperature in the range of an average low of 60.8°F (16°C) and an average high of 87.4°F (30.8°C). With average high and low temperatures of 87.4°F (30.8°C) and 60.8°F (16°C) respectively, July is Westminster's warmest month. For July, the heat index is estimated at a hot 87.8°F (31°C). Weather in July »

Weather in August

August, the last month of the summer in Westminster, is another tropical month, with temperature in the range of an average high of 86.2°F (30.1°C) and an average low of 59.5°F (15.3°C). Westminster observes a minor difference in average high-temperatures between July's 87.4°F (30.8°C) and August's 86.2°F (30.1°C). Weather in August »

Weather in September

September, the first month of the autumn in Westminster, is also a moderately hot month, with an average temperature varying between 52.7°F (11.5°C) and 78.6°F (25.9°C). A subtle change in temperatures is noted as August gives way to September, with average highs reducing from a hot 86.2°F (30.1°C) to a warm 78.6°F (25.9°C). Weather in September »

Weather in October

October, the same as September, is another refreshing autumn month in Westminster, Colorado, with temperature in the range of an average high of 63°F (17.2°C) and an average low of 39.7°F (4.3°C). October's arrival sees a clear drop in the average high-temperature, decreasing from September's moderately hot 78.6°F (25.9°C) to an enjoyable 63°F (17.2°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cool month in Westminster, Colorado, with an average temperature ranging between min 30.4°F (-0.9°C) and max 51.8°F (11°C). In November, the average high-temperature goes from an enjoyable 63°F (17.2°C) in October to a cool 51.8°F (11°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cold month in Westminster, Colorado, with an average temperature ranging between max 41.2°F (5.1°C) and min 21.2°F (-6°C). December tends to be the coldest month, with temperatures averaging a daily high of 41.2°F (5.1°C) and a low of 21.2°F (-6°C). Weather in December »
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Frequently asked questions

What is the driest month in Westminster?

The months with the least rainfall in Westminster, Colorado, are January and December Rain falls for 3.3 days and accumulates 0.35" (9mm) of rain.

How many days does it rain in Westminster?

Throughout the year, there are 101.9 rainfall days, and 10.91" (277mm) of precipitation is accumulated.

When does it snow in Westminster?

Months with snowfall in Westminster are January through May, October through December.

How many days does it snow in Westminster?

In Westminster, during the entire year, snow falls for 40.4 days and aggregates up to 31.3" (795mm) of snow.

When is the lowest UV index in Westminster?

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

What is the most humid month in Westminster?

With an average relative humidity of 65%, February is the most humid month.

What is the month with the least sunshine in Westminster?

February has the least sunshine of the year in Westminster, Colorado, with an average of 6.7h of sunshine.

When is Daylight Saving Time (DST) in Westminster?

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

April is the month with the most snowfall in Westminster. Snow falls for 4.3 days and accumulates 5.55" (141mm) of snow.

What is the rainiest month in Westminster?

The month with the most rainfall in Westminster is May, when the rain falls for 15.6 days and typically aggregates up to 2.05" (52mm) of precipitation.

What are the least humid months in Westminster?

The months with the lowest humidity are June and August, with an average relative humidity of 40%.

When it does not snow in Westminster?

June through September are months without snowfall.

When are the longest days in Westminster?

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

What are the months with the most sunshine in Westminster?

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

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

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

What are the warmest months in Westminster?

July, on average, is the warmest month, registering a high temperature of 87.4°F (30.8°C) and a low of 60.8°F (16°C).

What is the coldest month in Westminster?

In Westminster, Colorado, the average lowest temperatures are observed in December, with a high of 41.2°F (5.1°C) and a low of 21.2°F (-6°C).

What is the month with the shortest days in Westminster?

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

Average temperature
Westminster, CO

Average temperature - Westminster, CO

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is December (41.2°F).

The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is December (21.2°F).

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Average pressure
Westminster, CO

Average pressure - Westminster, CO

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).

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Average wind speed
Westminster, CO

Average wind speed - Westminster, CO

The windiest month (with the highest average wind speed) is April (6.7mph).
The calmest months (with the lowest average wind speed) are August, September and December (5.8mph).

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Average humidity
Westminster, CO

Average humidity - Westminster, CO

The month with the highest relative humidity is February (65%).
The months with the lowest relative humidity are June and August (40%).

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Average rainfall
Westminster, CO

Average rainfall - Westminster, CO

The wettest month (with the highest rainfall) is May (2.05").
The driest months (with the least rainfall) are January and December (0.35").

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Average rainfall days
Westminster, CO

Average rainfall days - Westminster, CO

The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is January (3.3 days).

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Average snowfall
Westminster, CO

Average snowfall - Westminster, CO

The month with the highest snowfall is April (5.55").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Westminster, CO

Average snowfall days - Westminster, CO

The month with the highest number of snowfall days is February (9.4 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight / Average sunshine
Westminster, CO

Average daylight / Average sunshine - Westminster, 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 42min).

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Average sunshine days
Westminster, CO

Average sunshine days - Westminster, CO

The month with the most sunshine days is December (23.9 days).
The month with the least sunshine days is July (8.8 days).

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Average UV index
Westminster, CO

Average UV index - Westminster, 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).

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Average visibility
Westminster, CO

Average visibility - Westminster, 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).

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Westminster, Colorado, USA

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