Missoula weather in October: Missoula, Montana: normal highs, lows, rain and records for October
Missoula in October has a normal high of 56°F and a normal low of 32°F, a daily mean of 44°F, falling from 65°F on the 1st to 47°F by the 31st. Measurable precipitation falls on 10 days in a normal October, 1.18 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 13°C and low of 0°C, 30 mm of precipitation and 2 cm of snow in October.
- NOAA stationMissoula International Airport
- Station IDUSW00024153
- Location46.92°N 114.09°W
- Elevation3,192 ft (973 m)
- From the center4 miles
- Population78,204
- Jan 32° 18°
- Feb 37° 21°
- Mar 48° 27°
- Apr 56° 32°
- May 66° 40°
- Jun 73° 46°
- Jul 85° 52°
- Aug 84° 50°
- Sep 73° 42°
- Oct 56° 32°
- Nov 40° 25°
- Dec 31° 18°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Missoula in October?
The normal high is 56°F and the normal low 32°F, for a daily mean of 44.1°F. October is 13.4°F cooler than September and 11.8°F warmer than November. October is the 7th warmest month of the year in Missoula and the 4th wettest. Across the month the normal high falls 18°F, from 65°F on October 1 to 47°F on October 31. From one year to the next October's mean temperature typically moves about 2.6°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 42°F and 47°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 36%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 65°F | 37°F | 27% | 10% |
| October 8 | 61°F | 35°F | 29% | 11% |
| October 15 | 56°F | 33°F | 32% | 12% |
| October 22 | 52°F | 30°F | 34% | 12% |
| October 31 | 47°F | 28°F | 36% | 13% |
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 | 65°F | 37°F | 27% | 10% | 11 h 50 min |
| October 2 | 64°F | 37°F | 27% | 10% | 11 h 40 min |
| October 3 | 64°F | 37°F | 27% | 11% | 11 h 40 min |
| October 4 | 63°F | 36°F | 27% | 11% | 11 h 40 min |
| October 5 | 63°F | 36°F | 28% | 11% | 11 h 30 min |
| October 6 | 62°F | 36°F | 28% | 11% | 11 h 30 min |
| October 7 | 61°F | 35°F | 28% | 11% | 11 h 30 min |
| October 8 | 61°F | 35°F | 29% | 11% | 11 h 20 min |
| October 9 | 60°F | 35°F | 29% | 11% | 11 h 20 min |
| October 10 | 59°F | 34°F | 30% | 11% | 11 h 20 min |
| October 11 | 59°F | 34°F | 30% | 11% | 11 h 10 min |
| October 12 | 58°F | 34°F | 30% | 12% | 11 h 10 min |
| October 13 | 57°F | 33°F | 31% | 12% | 11 h 10 min |
| October 14 | 57°F | 33°F | 31% | 12% | 11 h |
| October 15 | 56°F | 33°F | 32% | 12% | 11 h |
| October 16 | 56°F | 32°F | 32% | 12% | 11 h |
| October 17 | 55°F | 32°F | 32% | 12% | 10 h 50 min |
| October 18 | 54°F | 32°F | 33% | 12% | 10 h 50 min |
| October 19 | 54°F | 31°F | 33% | 12% | 10 h 50 min |
| October 20 | 53°F | 31°F | 33% | 12% | 10 h 40 min |
| October 21 | 53°F | 31°F | 34% | 12% | 10 h 40 min |
| October 22 | 52°F | 30°F | 34% | 12% | 10 h 40 min |
| October 23 | 51°F | 30°F | 34% | 13% | 10 h 30 min |
| October 24 | 51°F | 30°F | 34% | 13% | 10 h 30 min |
| October 25 | 50°F | 30°F | 35% | 13% | 10 h 30 min |
| October 26 | 50°F | 29°F | 35% | 13% | 10 h 20 min |
| October 27 | 49°F | 29°F | 35% | 13% | 10 h 20 min |
| October 28 | 49°F | 29°F | 36% | 13% | 10 h 20 min |
| October 29 | 48°F | 29°F | 36% | 13% | 10 h 10 min |
| October 30 | 48°F | 28°F | 36% | 13% | 10 h 10 min |
| October 31 | 47°F | 28°F | 36% | 13% | 10 h 10 min |
- Normal high
- 56°FOctober average
- Normal low
- 32°FOctober average
- Precipitation
- 1.18 inmonth total
- Days with precipitation
- 100.01 inch or more
- Snowfall
- 0.9 inmonth total
- Nights at 32°F or colder
- 15
- Daylight
- 11 h 50 min to 10 h 10 minOctober 1 to October 31
- Days at 70°F or more
- 4
- Sunshine
- 67%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024153; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Missoula in October?
On a given October day the chance of 0.01 inch or more is 32% on average, highest around October 31 (36%). In all, 1.18 in falls on 10 days of a normal October.
In a normal October in Missoula, 15 nights fall to freezing, 1 days stay below freezing all day and snowfall averages 0.9 inches.
Snow falls on 1 day in a normal October, and an inch or more covers the ground on 1 day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024153.
How humid and windy is Missoula in October?
At 3 p.m. the normal temperature is 46°F with 53% relative humidity and a dew point of 30°F; at 6 a.m. it is 31°F with 85% humidity. The wind averages 4.0 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. | 31°F | 27°F | 85% | 3.0 mph | 44% |
| 9 a.m. | 34°F | 29°F | 83% | 3.1 mph | – |
| noon | 41°F | 30°F | 64% | 4.5 mph | 46% |
| 3 p.m. | 46°F | 30°F | 53% | 6.1 mph | 49% |
| 6 p.m. | 41°F | 30°F | 65% | 5.0 mph | 50% |
| 9 p.m. | 37°F | 29°F | 75% | 3.6 mph | 50% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024153. 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 Missoula?
The warmest October temperature on Missoula's official record (since 1893) is 85°F, on October 3, 1963; the coldest is −7°F, on October 25, 2020. The wettest October brought 3.51 in (1975); the snowiest, 14.2 inches (2020).
The October mean against the 1991-2020 normal of 44.1°F: 2021 47.4°F (+3.3), 2022 50.2°F (+6.1), 2023 47.4°F (+3.3), 2024 47.1°F (+3.0), 2025 45.0°F (+0.9). 5 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 47.4°F | +3.3°F | 1.05 in |
| 2022 | 50.2°F | +6.1°F | 0.29 in |
| 2023 | 47.4°F | +3.3°F | 0.92 in |
| 2024 | 47.1°F | +3.0°F | 0.21 in |
| 2025 | 45.0°F | +0.9°F | 1.19 in |
Source: records: ACIS, NWS threaded record MSOthr; recent months: ACIS, station USW00024153. Records and recent months use complete months only.
How does October in Missoula compare across Montana?
Across the 141 places PlainClimate covers in Montana, October normal highs run from 47°F in Cooke City to 64°F in Hardin; Missoula's is 56°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.