October weather forecastGrand Junction, CO
October
Weather in October
October in Grand Junction signifies the arrival of quintessential fall weather. A sharp decline in temperatures sees a lower limit of 40.5°F (4.7°C), signaling the beginning of cooler days and even colder nights. Diverse weather patterns emerge as the occasional snowfall enriches the fall foliage. The daylight hours continue to shorten, though the sun remains present for the majority of the day. Ensure to dress in layers to adapt to swift temperature changes.Temperature
October indicates a noticeable reduction in the average high-temperature, moving down from a moderately hot 76.5°F (24.7°C) in September to a comfortable 60.8°F (16°C). Throughout October, the average low-temperature records at a cold 40.5°F (4.7°C).Humidity
In Grand Junction, the average relative humidity in October is 46%.Rainfall
In Grand Junction, during October, the rain falls for 7.4 days and regularly aggregates up to 0.94" (24mm) of precipitation. Throughout the year, there are 93.6 rainfall days, and 8.46" (215mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. October is the first month it typically snows. Throughout October, in the average 0.5 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, there are 28.3 snowfall days, and 11.5" (292mm) of snow is accumulated.Daylight
The average length of the day in October in Grand Junction is 11h and 10min.On the first day of October, sunrise is at 7:10 am and sunset at 6:56 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 6:14 pm MDT.
Sunshine
The average sunshine in October is 7.3h.UV index
In October, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: A daily high UV index of 3 in October leads to these guidelines:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Grand Junction, CO
- Average high temperature in October: 60.8°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (34.9°F).
- Average low temperature in October: 40.5°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in October
Grand Junction, CO
- Average pressure in October: 30.04"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The months with the lowest atmospheric pressure are May and June (29.9"Hg).
Average wind speed in October
Grand Junction, CO
- Average wind speed in October: 5.6mph
The windiest month (with the highest average wind speed) is June (7.5mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).
Average humidity in October
Grand Junction, CO
- Average humidity in October: 46%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is June (29%).
Average rainfall in October
Grand Junction, CO
- Average rainfall in October: 0.94"
The wettest month (with the highest rainfall) is March (1.06").
The driest month (with the least rainfall) is June (0.51").
Average rainfall days in October
Grand Junction, CO
- Average rainfall days in October: 7.4 days
The month with the highest number of rainy days is March (10.4 days).
The month with the least rainy days is November (5.5 days).
Average snowfall in October
Grand Junction, CO
- Average snowfall in October: 0.12"
The month with the highest snowfall is December (3.74").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
Grand Junction, CO
- Average snowfall days in October: 0.5 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Grand Junction, CO
- Average daylight in October: 11h and 12min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in October: 7h and 18min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 18min).
Average sunshine days in October
Grand Junction, CO
- Average sunshine days in October: 21.4 days
The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is February (15.8 days).
Average UV index in October
Grand Junction, CO
- Average UV index in October: 3
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 cloud cover in October
Grand Junction, CO
- Average cloud cover in October: 15
The month with the most cloud cover is January (Cloud cover 31).
The months with the least cloud cover are June and September (Cloud cover 11).
Average visibility in October
Grand Junction, CO
- Average visibility in October: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
