June weather forecastNiwot, CO
June
Weather in June
The first month of the summer, June, is a moderately hot month in Niwot, Colorado, with an average temperature fluctuating between 81.1°F (27.3°C) and 54.3°F (12.4°C).Temperature
June's arrival signals a significant increase in average high-temperatures, soaring from May's comfortable 66.4°F (19.1°C) to a moderately hot 81.1°F (27.3°C). A noteworthy thermal contrast characterizes Niwot's June nights, with temperatures averaging at a fresh 54.3°F (12.4°C).Heat index
For most parts of June, the heat index is appraised at 80.6°F (27°C). Persisting in activity during exposure could lead to weariness and subsequently to heat cramps.Records show heat index calculations are tailored for shaded regions and mild winds. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', integrates the air's temperature and its humidity to showcase the felt temperature by people. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are essentially critical for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
Humidity
In Niwot, the average relative humidity in June is 43%.Rainfall
In Niwot, in June, it is raining for 11.2 days, with typically 0.94" (24mm) of accumulated precipitation. Throughout the year, there are 105.4 rainfall days, and 10.43" (265mm) of precipitation is accumulated.Snowfall
In Niwot, snow does not fall in June through September.Daylight
With an average of 15h and 0min of daylight, June has the longest days of the year.On the first day of the month, sunrise is at 5:33 am and sunset at 8:24 pm. On the last day of June, sunrise is at 5:35 am and sunset at 8:33 pm MDT.
Sunshine
The month with the most sunshine is June, with an average of 11.9h of sunshine.UV index
The average daily maximum UV index in June is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In June, the maximum UV index of 5 translates into these guidelines:
Take precautions - Protection against sunburn is recommended. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Niwot, CO
- Average high temperature in June: 81.1°F
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).
- Average low temperature in June: 54.3°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).
Average pressure in June
Niwot, CO
- Average pressure in June: 29.91"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are April and June (29.91"Hg).
Average wind speed in June
Niwot, CO
- Average wind speed in June: 6mph
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).
Average humidity in June
Niwot, CO
- Average humidity in June: 43%
The month with the highest relative humidity is February (66%).
The month with the lowest relative humidity is August (42%).
Average rainfall in June
Niwot, CO
- Average rainfall in June: 0.94"
The wettest month (with the highest rainfall) is May (1.69").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in June
Niwot, CO
- Average rainfall days in June: 11.2 days
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).
Average snowfall in June
Niwot, CO
- Average snowfall in June: 0"
The month with the highest snowfall is November (4.41").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in June
Niwot, CO
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is February (7.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in June /
Average sunshine in June
Niwot, CO
- Average daylight in June: 15h and 0min
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 June: 11h and 54min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 48min).
Average sunshine days in June
Niwot, CO
- Average sunshine days in June: 15.1 days
The month with the most sunshine days is January (23.4 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in June
Niwot, CO
- Average UV index in June: 5
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 in June
Niwot, CO
- Average cloud cover in June: 16
The months with the most cloud cover are April and May (Cloud cover 26).
The months with the least cloud cover are June and September (Cloud cover 16).
Average visibility in June
Niwot, CO
- Average visibility in June: 6mi
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).





