Grand Junction weather in October: Grand Junction, Colorado: normal highs, lows, rain and records for October
Grand Junction in October has a normal high of 67°F and a normal low of 40°F, a daily mean of 53°F, falling from 74°F on the 1st to 60°F by the 31st. Measurable precipitation falls on 6 days in a normal October, 0.99 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 19°C and low of 4°C, 25 mm of precipitation and 1 cm of snow in October.
- NOAA stationGrand Junction Walker Field
- Station IDUSW00023066
- Location39.13°N 108.54°W
- Elevation4,858 ft (1,481 m)
- From the center3 miles
- Population70,554
- Jan 38° 17°
- Feb 46° 24°
- Mar 58° 32°
- Apr 66° 38°
- May 77° 47°
- Jun 89° 57°
- Jul 95° 64°
- Aug 91° 62°
- Sep 82° 53°
- Oct 67° 40°
- Nov 52° 28°
- Dec 39° 18°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Grand Junction in October?
The normal high is 67°F and the normal low 40°F, for a daily mean of 53.2°F. October is 13.9°F cooler than September and 13.6°F warmer than November. October is the 6th warmest month of the year in Grand Junction and the 2nd wettest. Across the month the normal high falls 14°F, from 74°F on October 1 to 60°F on October 31. From one year to the next October's mean temperature typically moves about 2.7°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 51°F and 56°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 20%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 74°F | 46°F | 20% | 11% |
| October 8 | 71°F | 43°F | 20% | 10% |
| October 15 | 67°F | 40°F | 19% | 9% |
| October 22 | 64°F | 37°F | 19% | 9% |
| October 31 | 60°F | 33°F | 19% | 9% |
Every day of October: normal high, low and chance of precipitation (warmest afternoon October 1, coldest night October 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| October 1 | 74°F | 46°F | 20% | 11% | 11 h 50 min |
| October 2 | 74°F | 46°F | 20% | 11% | 11 h 50 min |
| October 3 | 73°F | 45°F | 20% | 11% | 11 h 40 min |
| October 4 | 73°F | 45°F | 20% | 11% | 11 h 40 min |
| October 5 | 72°F | 44°F | 20% | 11% | 11 h 40 min |
| October 6 | 72°F | 44°F | 20% | 10% | 11 h 40 min |
| October 7 | 71°F | 43°F | 20% | 10% | 11 h 30 min |
| October 8 | 71°F | 43°F | 20% | 10% | 11 h 30 min |
| October 9 | 70°F | 42°F | 19% | 10% | 11 h 30 min |
| October 10 | 70°F | 42°F | 19% | 10% | 11 h 30 min |
| October 11 | 69°F | 42°F | 19% | 10% | 11 h 20 min |
| October 12 | 69°F | 41°F | 19% | 10% | 11 h 20 min |
| October 13 | 68°F | 41°F | 19% | 9% | 11 h 20 min |
| October 14 | 68°F | 40°F | 19% | 9% | 11 h 20 min |
| October 15 | 67°F | 40°F | 19% | 9% | 11 h 10 min |
| October 16 | 67°F | 39°F | 19% | 9% | 11 h 10 min |
| October 17 | 66°F | 39°F | 19% | 9% | 11 h 10 min |
| October 18 | 66°F | 39°F | 19% | 9% | 11 h 10 min |
| October 19 | 65°F | 38°F | 19% | 9% | 11 h |
| October 20 | 65°F | 38°F | 19% | 9% | 11 h |
| October 21 | 64°F | 37°F | 19% | 9% | 11 h |
| October 22 | 64°F | 37°F | 19% | 9% | 11 h |
| October 23 | 63°F | 37°F | 19% | 9% | 11 h |
| October 24 | 63°F | 36°F | 19% | 9% | 10 h 50 min |
| October 25 | 63°F | 36°F | 19% | 9% | 10 h 50 min |
| October 26 | 62°F | 35°F | 19% | 9% | 10 h 50 min |
| October 27 | 62°F | 35°F | 19% | 9% | 10 h 50 min |
| October 28 | 61°F | 35°F | 19% | 9% | 10 h 40 min |
| October 29 | 61°F | 34°F | 19% | 9% | 10 h 40 min |
| October 30 | 60°F | 34°F | 19% | 9% | 10 h 40 min |
| October 31 | 60°F | 33°F | 19% | 9% | 10 h 40 min |
- Normal high
- 67°FOctober average
- Normal low
- 40°FOctober average
- Precipitation
- 0.99 inmonth total
- Days with precipitation
- 60.01 inch or more
- Snowfall
- 0.4 inmonth total
- Nights at 32°F or colder
- 6
- Daylight
- 11 h 50 min to 10 h 40 minOctober 1 to October 31
- Days at 70°F or more
- 13
- Days at 80°F or more
- 3
- Sunshine
- 82%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00023066; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Grand Junction in October?
On a given October day the chance of 0.01 inch or more is 19% on average, highest around October 1 (20%). In all, 0.99 in falls on 6 days of a normal October.
In a normal October in Grand Junction, 6 nights fall to freezing and snowfall averages 0.4 inches.
Snow falls on 1 day in a normal October.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00023066.
How humid and windy is Grand Junction in October?
At 3 p.m. the normal temperature is 57°F with 32% relative humidity and a dew point of 27°F; at 6 a.m. it is 37°F with 66% humidity. The wind averages 6.5 mph, most often from the west-northwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 37°F | 27°F | 66% | 6.6 mph | 71% |
| 9 a.m. | 44°F | 28°F | 53% | 7.4 mph | 71% |
| noon | 53°F | 27°F | 37% | 5.6 mph | 70% |
| 3 p.m. | 57°F | 27°F | 32% | 7.5 mph | 69% |
| 6 p.m. | 49°F | 28°F | 45% | 5.0 mph | 70% |
| 9 p.m. | 44°F | 28°F | 53% | 6.3 mph | 74% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00023066. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for October in Grand Junction?
The warmest October temperature on Grand Junction's official record (since 1893) is 89°F, on October 2, 2024; the coldest is 6°F, on October 31, 2019. The wettest October brought 3.45 in (1972); the snowiest, 6.1 inches (1975).
The October mean against the 1991-2020 normal of 53.2°F: 2021 51.8°F (−1.4), 2022 53.7°F (+0.5), 2023 55.4°F (+2.2), 2024 62.0°F (+8.8), 2025 55.7°F (+2.5). 4 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 51.8°F | −1.4°F | 1.41 in |
| 2022 | 53.7°F | +0.5°F | 1.79 in |
| 2023 | 55.4°F | +2.2°F | 0.55 in |
| 2024 | 62.0°F | +8.8°F | 0.91 in |
| 2025 | 55.7°F | +2.5°F | 2.62 in |
Source: records: ACIS, NWS threaded record GJTthr; recent months: ACIS, station USW00023066. Records and recent months use complete months only.
How does October in Grand Junction compare across Colorado?
Across the 125 places PlainClimate covers in Colorado, October normal highs run from 50°F in Leadville to 72°F in Rocky Ford; Grand Junction's is 67°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Grand Junction in September82°F by day, 53°F at night
- Grand Junction in November52°F by day, 28°F at night
- Grand Junction through the yearEvery month, frost dates, records and recent years
- Colorado in OctoberThe statewide normal and the warmest and coolest places
- Rocky Ford: Colorado's warmest Octobernormal high 72°F