Idaho Falls weather in October: Idaho Falls, Idaho: normal highs, lows, rain and records for October
Idaho Falls in October has a normal high of 59°F and a normal low of 31°F, a daily mean of 45°F, falling from 67°F on the 1st to 51°F by the 31st. Measurable precipitation falls on 7 days in a normal October, 0.88 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 15°C and low of −1°C, 22 mm of precipitation in October.
- NOAA stationIdaho Falls Fanning Field
- Station IDUSW00024145
- Location43.52°N 112.07°W
- Elevation4,729 ft (1,441 m)
- Population69,523
- Jan 29° 12°
- Feb 34° 16°
- Mar 47° 25°
- Apr 58° 31°
- May 67° 38°
- Jun 76° 45°
- Jul 87° 49°
- Aug 86° 48°
- Sep 75° 41°
- Oct 59° 31°
- Nov 43° 22°
- Dec 30° 13°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Idaho Falls in October?
The normal high is 59°F and the normal low 31°F, for a daily mean of 45.0°F. October is 12.7°F cooler than September and 12.6°F warmer than November. October is the 6th warmest month of the year in Idaho Falls and the 5th wettest. Across the month the normal high falls 16°F, from 67°F on October 1 to 51°F on October 31. From one year to the next October's mean temperature typically moves about 3.0°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 42°F and 48°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 21%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 67°F | 36°F | 20% | 9% |
| October 8 | 64°F | 34°F | 20% | 9% |
| October 15 | 60°F | 31°F | 20% | 8% |
| October 22 | 56°F | 29°F | 20% | 8% |
| October 31 | 51°F | 26°F | 21% | 7% |
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 | 67°F | 36°F | 20% | 9% | 11 h 50 min |
| October 2 | 67°F | 36°F | 20% | 9% | 11 h 40 min |
| October 3 | 66°F | 35°F | 20% | 9% | 11 h 40 min |
| October 4 | 66°F | 35°F | 20% | 9% | 11 h 40 min |
| October 5 | 65°F | 35°F | 20% | 9% | 11 h 40 min |
| October 6 | 65°F | 34°F | 20% | 9% | 11 h 30 min |
| October 7 | 64°F | 34°F | 20% | 9% | 11 h 30 min |
| October 8 | 64°F | 34°F | 20% | 9% | 11 h 30 min |
| October 9 | 63°F | 33°F | 20% | 9% | 11 h 20 min |
| October 10 | 62°F | 33°F | 20% | 9% | 11 h 20 min |
| October 11 | 62°F | 32°F | 20% | 9% | 11 h 20 min |
| October 12 | 61°F | 32°F | 20% | 9% | 11 h 20 min |
| October 13 | 61°F | 32°F | 20% | 9% | 11 h 10 min |
| October 14 | 60°F | 31°F | 20% | 9% | 11 h 10 min |
| October 15 | 60°F | 31°F | 20% | 8% | 11 h 10 min |
| October 16 | 59°F | 31°F | 20% | 8% | 11 h |
| October 17 | 59°F | 30°F | 20% | 8% | 11 h |
| October 18 | 58°F | 30°F | 20% | 8% | 11 h |
| October 19 | 57°F | 30°F | 20% | 8% | 10 h 50 min |
| October 20 | 57°F | 29°F | 20% | 8% | 10 h 50 min |
| October 21 | 56°F | 29°F | 20% | 8% | 10 h 50 min |
| October 22 | 56°F | 29°F | 20% | 8% | 10 h 50 min |
| October 23 | 55°F | 28°F | 20% | 8% | 10 h 40 min |
| October 24 | 55°F | 28°F | 20% | 8% | 10 h 40 min |
| October 25 | 54°F | 28°F | 20% | 8% | 10 h 40 min |
| October 26 | 54°F | 28°F | 20% | 8% | 10 h 30 min |
| October 27 | 53°F | 27°F | 21% | 8% | 10 h 30 min |
| October 28 | 53°F | 27°F | 21% | 8% | 10 h 30 min |
| October 29 | 52°F | 27°F | 21% | 8% | 10 h 30 min |
| October 30 | 52°F | 26°F | 21% | 8% | 10 h 20 min |
| October 31 | 51°F | 26°F | 21% | 7% | 10 h 20 min |
- Normal high
- 59°FOctober average
- Normal low
- 31°FOctober average
- Precipitation
- 0.88 inmonth total
- Days with precipitation
- 70.01 inch or more
- Nights at 32°F or colder
- 17
- Daylight
- 11 h 50 min to 10 h 20 minOctober 1 to October 31
- Days at 70°F or more
- 6
- Days at 80°F or more
- 1
- Sunshine
- 80%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024145; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Idaho Falls in October?
On a given October day the chance of 0.01 inch or more is 20% on average, highest around October 31 (21%). In all, 0.88 in falls on 7 days of a normal October.
In a normal October in Idaho Falls, 17 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024145.
What are the records for October in Idaho Falls?
The warmest October temperature on this station's record (since 1948) is 88°F, on October 2, 2010; the coldest is −3°F, on October 30, 2019. The wettest October brought 2.77 in (1974); the snowiest, 7.3 inches (1971).
The October mean against the 1991-2020 normal of 45.0°F: 2021 47.7°F (+2.7), 2022 48.7°F (+3.7), 2023 48.3°F (+3.3), 2024 51.0°F (+6.0), 2025 45.7°F (+0.7). 5 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 47.7°F | +2.7°F | 1.78 in |
| 2022 | 48.7°F | +3.7°F | 0.38 in |
| 2023 | 48.3°F | +3.3°F | 1.26 in |
| 2024 | 51.0°F | +6.0°F | 0.34 in |
| 2025 | 45.7°F | +0.7°F | 1.15 in |
Source: records: ACIS, station USW00024145; recent months: ACIS, station USW00024145. Records and recent months use complete months only.
How does October in Idaho Falls compare across Idaho?
Across the 85 places PlainClimate covers in Idaho, October normal highs run from 44°F in Mullan to 71°F in Glenns Ferry; Idaho Falls's is 59°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Idaho Falls in September75°F by day, 41°F at night
- Idaho Falls in November43°F by day, 22°F at night
- Idaho Falls through the yearEvery month, frost dates, records and recent years
- Idaho in OctoberThe statewide normal and the warmest and coolest places
- Glenns Ferry: Idaho's warmest Octobernormal high 71°F