Gillette, WY weather in January
Expect cold weather with some rain and some snow in Gillette in January, with highs near 36°F and lows near 16°F. Rain or snow falls on about 8 days. Snowfall averages about 8.2 in. It is one of the coldest months in Gillette.
- Normal high
- 36°F
- Normal low
- 16°F
- Wet days
- 8
- 0.6 in total
- Snowfall
- 8.2 in
- snow on the ground 16 days
How January changes from start to finish
| January 1 | January 31 | |
|---|---|---|
| Normal high | 35°F | 36°F |
| Normal low | 15°F | 16°F |
| Chance of a wet day | 25% | 26% |
| Sunrise / sunset | 7:37 am / 4:33 pm | 7:21 am / 5:09 pm |
| Daylight | 8.9 h | 9.8 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 January day
- 6 am22°Fdew point 13°F
- 9 am25°Fdew point 14°F
- Noon31°Fdew point 17°F
- 3 pm32°Fdew point 17°F
- 6 pm25°Fdew point 15°F
- 9 pm24°Fdew point 15°F
NOAA hourly normals (local standard time) from Gillette Campbell Airport (4 mi away); average wind 11 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F (temperature only: no humidity station nearby)0 of 31
- Hot dayshigh 90°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow8 of 31
- Notable rainat least 0.10 in2 of 31
- Freezing nightslow 32°F or below30 of 31
- Snow on the groundsnow depth 1 in or more16 of 31
Average days per January, counted from daily records for each year 1991-2020.
Rain and snow in January
Normal precipitation is 0.6 in; a dry January brings about 0.4 in and a wet one about 0.8 in (25th and 75th percentiles). Days with half an inch or more are rare. Normal snowfall is 8.2 in, with about 3 days of an inch or more.
How January varies from year to year
- Warmest January, 1991-20201992: average high 41°F
- Coolest January1993: average high 26°F
- Wettest January1997: 1.4 in
- Driest January1992: 0.05 in
- Highest reading63°F (January 26, 2015)
- Lowest reading-31°F (January 12, 1997)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
January compared with December and February
| December | January | February | |
|---|---|---|---|
| Normal high | 36°F | 36°F | 38°F |
| Normal low | 16°F | 16°F | 17°F |
| Wet days | 7 | 8 | 8 |
| Comfortable days | 0 | 0 | 0 |
| Daylight | 8.9 h | 9.3 h | 10.5 h |
Highs change by 0°F from December and +2°F into February.
Nearby alternatives in January
- Cooler: Medora, ND205 mi · high 28°F · 6 wet days
How Gillette ranks in January
- Normal high290th warmest of 378 cities; 2nd of 4 in Wyoming
- Wet days126th driest of 378
What to pack for Gillette in January
- A warm jacket – lows near 16°F, highs near 36°F
- Waterproof boots – snow on the ground on about 16 days
- A hat and gloves – about 30 freezing nights
Heating and cooling
January has 1209 heating degree days and 0 cooling degree days (base 65°F), 16% of the year's total heating and cooling demand.
Questions
How cold is Gillette in January?
The normal high is 36°F and the normal low is 16°F. From 1991 to 2020 the coldest January reading was -31°F (January 12, 1997).
Does it rain a lot in Gillette in January?
About 8 days in January have at least 0.01 in of precipitation, and the normal total is 0.6 in. The wettest January in 1991-2020 was in 1997 (1.4 in); the driest was in 1992 (0.05 in).
Does it snow in Gillette in January?
Yes. Normal snowfall in January is 8.2 in, and snow covers the ground on about 16 days.
Is January a good time to visit Gillette?
January ranks 11th of 12 months on our comfort score for Gillette (32 out of 100). It has almost no comfortable days (judged by temperature only). The best months are May and June.
Where the numbers come from
- Temperature, rain, snowfall and snow depth: Gillette 4SE (USC00483855), 3.1 mi ESE of the city center, 4,640 ft (86 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Frost dates and humidity and wind by hour: Gillette Campbell Airport (USW00094023), 3.9 mi NNW of the city center, 4,354 ft (200 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Not available for this location: cloud cover and daily humidity and wind (no station close enough or similar enough in elevation).