Monthly weather forecast and climate
Niwot, CO

Weather in January

January, like December, in Niwot, Colorado, is a wintry winter month, with temperature in the range of an average low of 21.2°F (-6°C) and an average high of 40.1°F (4.5°C). In January, the average high-temperature is relatively the same as in December - a still wintry 40.1°F (4.5°C). Weather in January »

Weather in February

The last month of the winter, February, is another cold month in Niwot, Colorado, with average temperature varying between 40.3°F (4.6°C) and 20.8°F (-6.2°C). In February, the average high-temperature is practically the same as in January - a still cold 40.3°F (4.6°C). Weather in February »

Weather in March

The first month of the spring, March, is a cool month in Niwot, Colorado, with temperature in the range of an average low of 29.7°F (-1.3°C) and an average high of 51.4°F (10.8°C). In March, the average high-temperature rises, from a wintry 40.3°F (4.6°C) in February, to a cool 51.4°F (10.8°C). Weather in March »

Weather in April

April is a moderate spring month in Niwot, Colorado, with average temperature fluctuating between 57.7°F (14.3°C) and 34.3°F (1.3°C). In April, the average high-temperature marginally rises, from a fresh 51.4°F (10.8°C) in March, to a moderate 57.7°F (14.3°C). Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in Niwot, Colorado, with average temperature ranging between max 66.4°F (19.1°C) and min 42.6°F (5.9°C). In Niwot, the average high-temperature marginally rises, from a moderate 57.7°F (14.3°C) in April, to an enjoyable 66.4°F (19.1°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Niwot, Colorado, with average temperature ranging between min 54.3°F (12.4°C) and max 81.1°F (27.3°C). In Niwot, Colorado, the average high-temperature increases considerably, from a comfortable 66.4°F (19.1°C) in May, to a warm 81.1°F (27.3°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Niwot, Colorado, with temperature in the range of an average low of 59.2°F (15.1°C) and an average high of 85.6°F (29.8°C). With an average high-temperature of 85.6°F (29.8°C) and an average low-temperature of 59.2°F (15.1°C), July is the warmest month. The average heat index is estimated at a hot 86.2°F (30.1°C). Weather in July »

Weather in August

August, the last month of the summer, in Niwot, is also a moderately hot month, with average temperature ranging between max 84.7°F (29.3°C) and min 57.4°F (14.1°C). In August, the average high-temperature is practically the same as in July - a still moderately hot 84.7°F (29.3°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Niwot, Colorado, with average temperature ranging between min 51.1°F (10.6°C) and max 77.2°F (25.1°C). In Niwot, the average high-temperature in September slightly decreases, from a warm 84.7°F (29.3°C) in August, to a still moderately hot 77.2°F (25.1°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Niwot, Colorado, with average temperature ranging between max 61.5°F (16.4°C) and min 38.3°F (3.5°C). In Niwot, the average high-temperature plummets, from a moderately hot 77.2°F (25.1°C) in September, to a comfortable 61.5°F (16.4°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a fresh month in Niwot, Colorado, with average temperature fluctuating between 50.4°F (10.2°C) and 29.1°F (-1.6°C). In November, the average high-temperature decreases, from an enjoyable 61.5°F (16.4°C) in October, to a fresh 50.4°F (10.2°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cold month in Niwot, Colorado, with average temperature fluctuating between 19.9°F (-6.7°C) and 39°F (3.9°C). The coldest month is December, with an average high-temperature of 39°F (3.9°C) and an average low-temperature of 19.9°F (-6.7°C). Weather in December »
[Resources]

FAQ

How many days does it rain in Niwot?

In Niwot, Colorado, during the entire year, the rain falls for 105.4 days and collects up to 10.43" (265mm) of precipitation.

What is the driest month in Niwot?

The month with the least rainfall is January when the rain falls for 3.5 days and typically collects 0.35" (9mm) of precipitation.

When does it snow in Niwot?

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

How much does it snow in Niwot?

In Niwot, Colorado, during the entire year, snow falls for 37.1 days, and aggregates up to 26.73" (679mm) of snow.

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

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

What is the most humid month in Niwot?

The most humid month in Niwot is February, with an average relative humidity of 66%.

What is the month with the least sunshine in Niwot?

February has the least sunshine of the year in Niwot, with an average of 6.8h of sunshine.

What is the wettest month in Niwot?

May is the month with the most rainfall in Niwot. Rain falls for 15 days and accumulates 1.69" (43mm) of precipitation.

When it does not snow in Niwot?

June through September are months without snowfall in Niwot, Colorado.

When are the longest days in Niwot?

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

What month has the most sunshine in Niwot?

The month with the most sunshine in Niwot, Colorado, is June, with an average of 11.9h of sunshine.

What is the warmest month in Niwot?

With an average high-temperature of 85.6°F (29.8°C) and an average low-temperature of 59.2°F (15.1°C), July is the warmest month in Niwot.

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

July and August, with an average maximum UV index of 6, are months with the highest UV index in Niwot, Colorado.

What is the least humid month in Niwot?

The least humid month is August, with an average relative humidity of 42%.

When does it snow the most in Niwot?

November is the month with the most snowfall in Niwot. Snow falls for 5.4 days and accumulates 4.41" (112mm) of snow.

What is the coldest month in Niwot?

December is the coldest month in Niwot, with an average high-temperature of 39°F (3.9°C) and an average low-temperature of 19.9°F (-6.7°C).

What is the month with the shortest days in Niwot?

December has the shortest days of the year, with an average of 9.4h of daylight.

Average temperature
Niwot, CO

Average temperature - Niwot, CO

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is December (39°F).

The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is December (19.9°F).

[Resources]

Average pressure
Niwot, CO

Average pressure - Niwot, CO

The month with the highest atmospheric pressure is January (30.15").
Months with the lowest atmospheric pressure are April and June (29.91").

[Resources]

Average wind speed
Niwot, CO

Average wind speed - Niwot, CO

The windiest months (with the highest average wind speed) are March and April (6.6mph).
The calmest months (with the lowest average wind speed) are August and September (5.6mph).

[Resources]

Average rainfall
Niwot, CO

Average rainfall - Niwot, CO

The wettest month (with the highest rainfall) is May (1.69").
The driest month (with the least rainfall) is January (0.35").

[Resources]

Average rainfall days
Niwot, CO

Average rainfall days - Niwot, CO

The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is January (3.5 days).

[Resources]

Average snowfall
Niwot, CO

Average snowfall - Niwot, CO

The month with the highest snowfall is November (4.41").
Months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days
Niwot, CO

Average snowfall days - Niwot, CO

The month with the highest number of snowfall days is February (7.7 days).
Months with the least snowfall days are June, July and August (0 days).

[Resources]

Average daylight / Average sunshine
Niwot, CO

Average daylight / Average sunshine - Niwot, CO

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

The month with the most sunshine is June (Average sunshine: 11.9h).
The month with the least sunshine is February (Average sunshine: 6.8h).

[Resources]

Average sunshine days
Niwot, CO

Average sunshine days - Niwot, CO

The month with the most sunshine days is January (23.4 days).
The month with the least sunshine days is July (9.3 days).

[Resources]

Average UV index
Niwot, CO

Average UV index - Niwot, CO

Months with the highest UV index are July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

[Resources]

Average visibility
Niwot, CO

Average visibility - Niwot, CO

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

[Resources]