Casper, WY weather in October
October in Casper: cool, with some rain and some snow. Highs 60°F, lows 31°F, about 8 wet days and about 7.0 in of snow. A good month for most outdoor plans.
- Normal high
- 60°F
- Normal low
- 31°F
- Wet days
- 8
- 1.2 in total
- Snowfall
- 7.0 in
- snow on the ground 2 days
How October changes from start to finish
| October 1 | October 31 | |
|---|---|---|
| Normal high | 67°F | 53°F |
| Normal low | 36°F | 26°F |
| Chance of a wet day | 25% | 22% |
| Sunrise / sunset | 7:02 am / 6:47 pm | 7:38 am / 5:59 pm |
| Daylight | 11.7 h | 10.3 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Mountain Time).
A typical October day
- 6 am37°Fdew point 27°F
- 9 am47°Fdew point 29°F
- Noon55°Fdew point 28°F
- 3 pm58°Fdew point 27°F
- 6 pm47°Fdew point 28°F
- 9 pm42°Fdew point 28°F
NOAA hourly normals (local standard time) from Casper Natrona Co Airport (8 mi away); average wind 11 mph; clear or few clouds in 70% of daytime hours, mostly cloudy or overcast in 25%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F12 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow8 of 31
- Notable rainat least 0.10 in3 of 31
- Freezing nightslow 32°F or below17 of 31
- Snow on the groundsnow depth 1 in or more2 of 31
Average days per October, counted from daily records for each year 1991-2020.
Rain and snow in October
Normal precipitation is 1.2 in; a dry October brings about 0.6 in and a wet one about 1.3 in (25th and 75th percentiles). About 1 day brings half an inch or more. Normal snowfall is 7.0 in, with about 2 days of an inch or more.
How October varies from year to year
- Warmest October, 1991-20202015: average high 67°F
- Coolest October2009: average high 48°F
- Wettest October1998: 4.6 in
- Driest October2016: 0.2 in
- Highest reading87°F (October 5, 1993)
- Lowest reading-9°F (October 30, 2019)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
October compared with September and November
| September | October | November | |
|---|---|---|---|
| Normal high | 76°F | 60°F | 46°F |
| Normal low | 42°F | 31°F | 22°F |
| Wet days | 7 | 8 | 6 |
| Comfortable days | 14 | 12 | 2 |
| Daylight | 12.5 h | 11.0 h | 9.8 h |
Highs change by -16°F from September and -14°F into November.
Nearby alternatives in October
- Warmer: Greeley, CO188 mi · high 68°F · 6 wet days
- Cooler: Vail, CO223 mi · high 54°F · 7 wet days
How Casper ranks in October
- Normal high321st warmest of 378 cities; 1st of 4 in Wyoming
- Wet days190th driest of 378
- Comfortable days181st most of 340
What to pack for Casper in October
- A warm jacket – lows near 31°F, highs near 60°F
- Layers – afternoons near 60°F but nights near 31°F
- Waterproof boots – about 7.0 in of snow in a typical year
- A hat and gloves – about 17 freezing nights
Heating and cooling
October has 611 heating degree days and 1 cooling degree days (base 65°F), 8% of the year's total heating and cooling demand.
Questions
How cold is Casper in October?
The normal high is 60°F and the normal low is 31°F. From 1991 to 2020 the coldest October reading was -9°F (most recently on October 30, 2019).
Does it rain a lot in Casper in October?
About 8 days in October have at least 0.01 in of precipitation, and the normal total is 1.2 in. The wettest October in 1991-2020 was in 1998 (4.6 in); the driest was in 2016 (0.2 in).
Does it snow in Casper in October?
Yes. Normal snowfall in October is 7.0 in, and snow covers the ground on about 2 days.
Is October a good time to visit Casper?
October ranks 5th of 12 months on our comfort score for Casper (61 out of 100). It has about 12 comfortable days. The best month is May.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates, humidity and wind by hour and cloud cover: Casper Natrona Co Airport (USW00024089), 7.9 mi WNW of the city center, 5,338 ft (233 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Natrona County International Airport (725690-24089), 8.4 mi WNW of the city center, 5,319 ft (214 ft higher than the city). Hourly observations, 1991-2020.