Grand Junction in Fall
In fall (September, October and November), Grand Junction sees average daytime highs around 61°F and overnight lows near 37°F, with 6.3 in of precipitation over about 24 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 79°F in early September to 41°F by late November. The sky is clear or mostly clear about 56% of the time across fall, and the air most often feels dry.
Fall is Grand Junction's 2nd-best season to visit on our travel score. For the whole year in context, see Grand Junction's year-round climate.
- Avg daytime high
- 61°F
- 2nd-warmest season
- Avg overnight low
- 37°F
- Precipitation
- 6.3 in
- 24 wet days
- Avg wind
- 3 mph
- Travel score
- 4.9
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Grand Junction in Fall
Over the season highs ease from about 79°F in early September to 41°F by late November.
A typical fall day in Grand Junction reaches about 61°F and drops to 37°F overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Grand Junction
Once humidity and wind are folded in, fall brings about 0 days that feel above 90°F and 39 that feel at or below 32°F.
The story in fall is cold — wind chill drags the overnight "feels like" below the raw low.
Grand Junction weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 34° / 13° | 1.5 | 7.5 | 7.2 | 9.6 | 0.0 |
| Feb | 39° / 19° | 1.7 | 9 | 8.1 | 10.5 | 0.0 |
| Mar | 49° / 27° | 2.0 | 9.5 | 6.5 | 11.7 | 2.2 |
| Apr | 58° / 34° | 2.0 | 9.7 | 3.8 | 13 | 4.5 |
| May | 70° / 44° | 1.9 | 8.8 | 0.6 | 14.1 | 6.8 |
| Jun | 82° / 53° | 1.0 | 4.8 | 0 | 14.7 | 7.0 |
| Jul | 87° / 60° | 2.2 | 8.6 | 0 | 14.5 | 5.1 |
| Aug | 83° / 58° | 3.2 | 11.7 | 0 | 13.5 | 5.9 |
| Sep | 75° / 49° | 2.7 | 8.9 | 0.1 | 12.3 | 7.3 |
| Oct | 62° / 37° | 2.0 | 8.1 | 1.6 | 11 | 5.8 |
| Nov | 47° / 25° | 1.7 | 7 | 4.9 | 9.9 | 1.6 |
| Dec | 35° / 15° | 1.5 | 7.3 | 7.3 | 9.3 | 0.0 |
Cloud cover in Fall
The sky is clear or mostly clear about 56% of the time across fall.
Chance of precipitation in Fall
Grand Junction gets around 6.3 in of rain and snow over 24 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 3 mph across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 54 min in early September to 9 h 30 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 4.4 kWh/m².
Is fall a good time to visit Grand Junction?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Grand Junction for sightseeing.
What to pack for Grand Junction in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Grand Junction sees daytime highs around 61°F and nights near 37°F. Pack a warm layer. Worth having: light clothes, a heavy coat, rain gear and sun protection. About 24 days see rain.
UV index in Grand Junction in Fall
Clear-sky midday UV across fall averages around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Grand Junction peaks around July 16 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 2 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 3 | 4 | 6 | 6 | 8 | 11 | 11 | 10 | 7 | 6 | 3 | 2 |
| Level | Moderate | Moderate | High | High | Very high | Extreme | Extreme | Extreme | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 3 | Moderate |
| Feb | 4 | Moderate |
| Mar | 6 | High |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 10 | Extreme |
| Sep | 7 | Very high |
| Oct | 6 | High |
| Nov | 3 | Moderate |
| Dec | 2 | Moderate |
Where is Grand Junction?
Grand Junction sits at 39.1°N, 108.6°W, 4,593 ft above sea level, in United States. The nearest listed city is Clifton, 5.6 mi away.
Topography around Grand Junction
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Grand Junction.
Within 2 miles, the terrain around Grand Junction has only modest variations in elevation — a maximum elevation change of 308 ft around an average of 4,613 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 3,176 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 7,178 ft.
The land around Grand Junction is covered by artificial surfaces (53%) within 2 miles, grassland (29%) within 10 miles, and trees (38%), shrubs (24%) and grassland (24%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Grand Junction (39.0639°, -108.5507°, elevation 4,593 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.