Nampa weather in January: Nampa, Idaho: normal highs, lows, rain and records for January
Nampa in January has a normal high of 40°F and a normal low of 23°F, a daily mean of 31°F, rising from 38°F on the 1st to 42°F by the 31st. Measurable precipitation falls on 10 days in a normal January, 1.37 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 4°C and low of −5°C, 35 mm of precipitation and 9 cm of snow in January.
- NOAA stationNampa Sugar Factory
- Station IDUSC00106305
- Location43.60°N 116.58°W
- Elevation2,470 ft (753 m)
- Population117,350
- Jan 40° 23°
- Feb 47° 26°
- Mar 57° 32°
- Apr 65° 36°
- May 74° 44°
- Jun 83° 51°
- Jul 93° 57°
- Aug 92° 56°
- Sep 81° 47°
- Oct 67° 37°
- Nov 51° 28°
- Dec 40° 23°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Nampa in January?
The normal high is 40°F and the normal low 23°F, for a daily mean of 31.2°F. January is 0.2°F cooler than December and 5.4°F cooler than February. January is the 12th warmest month of the year in Nampa and the 2nd wettest. Across the month the normal high rises 4°F, from 38°F on January 1 to 42°F on January 31. From one year to the next January's mean temperature typically moves about 4.8°F either way (NOAA's standard deviation), so roughly two Januarys in three average between 26°F and 36°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 33%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| January 1 | 38°F | 22°F | 33% | 16% |
| January 8 | 38°F | 22°F | 32% | 16% |
| January 15 | 39°F | 23°F | 31% | 15% |
| January 22 | 40°F | 24°F | 30% | 15% |
| January 31 | 42°F | 24°F | 28% | 14% |
Every day of January: normal high, low and chance of precipitation (warmest afternoon January 31, coldest night January 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| January 1 | 38°F | 22°F | 33% | 16% | 9 h |
| January 2 | 38°F | 22°F | 33% | 16% | 9 h |
| January 3 | 38°F | 22°F | 33% | 16% | 9 h |
| January 4 | 38°F | 22°F | 33% | 16% | 9 h |
| January 5 | 38°F | 22°F | 33% | 16% | 9 h |
| January 6 | 38°F | 22°F | 33% | 16% | 9 h |
| January 7 | 38°F | 22°F | 33% | 16% | 9 h 10 min |
| January 8 | 38°F | 22°F | 32% | 16% | 9 h 10 min |
| January 9 | 38°F | 22°F | 32% | 16% | 9 h 10 min |
| January 10 | 39°F | 23°F | 32% | 16% | 9 h 10 min |
| January 11 | 39°F | 23°F | 32% | 16% | 9 h 10 min |
| January 12 | 39°F | 23°F | 32% | 16% | 9 h 10 min |
| January 13 | 39°F | 23°F | 32% | 16% | 9 h 10 min |
| January 14 | 39°F | 23°F | 31% | 16% | 9 h 10 min |
| January 15 | 39°F | 23°F | 31% | 15% | 9 h 20 min |
| January 16 | 39°F | 23°F | 31% | 15% | 9 h 20 min |
| January 17 | 39°F | 23°F | 31% | 15% | 9 h 20 min |
| January 18 | 40°F | 23°F | 31% | 15% | 9 h 20 min |
| January 19 | 40°F | 23°F | 30% | 15% | 9 h 20 min |
| January 20 | 40°F | 23°F | 30% | 15% | 9 h 30 min |
| January 21 | 40°F | 23°F | 30% | 15% | 9 h 30 min |
| January 22 | 40°F | 24°F | 30% | 15% | 9 h 30 min |
| January 23 | 40°F | 24°F | 29% | 15% | 9 h 30 min |
| January 24 | 41°F | 24°F | 29% | 15% | 9 h 30 min |
| January 25 | 41°F | 24°F | 29% | 15% | 9 h 40 min |
| January 26 | 41°F | 24°F | 29% | 14% | 9 h 40 min |
| January 27 | 41°F | 24°F | 28% | 14% | 9 h 40 min |
| January 28 | 42°F | 24°F | 28% | 14% | 9 h 40 min |
| January 29 | 42°F | 24°F | 28% | 14% | 9 h 40 min |
| January 30 | 42°F | 24°F | 28% | 14% | 9 h 50 min |
| January 31 | 42°F | 24°F | 28% | 14% | 9 h 50 min |
- Normal high
- 40°FJanuary average
- Normal low
- 23°FJanuary average
- Precipitation
- 1.37 inmonth total
- Days with precipitation
- 100.01 inch or more
- Snowfall
- 3.4 inmonth total
- Nights at 32°F or colder
- 28
- Daylight
- 9 h to 9 h 50 minJanuary 1 to January 31
- Sunshine
- 64%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00106305; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Nampa in January?
On a given January day the chance of 0.01 inch or more is 31% on average, highest around January 1 (33%). In all, 1.37 in falls on 10 days of a normal January.
In a normal January in Nampa, 28 nights fall to freezing, 6 days stay below freezing all day and snowfall averages 3.4 inches.
Snow falls on 3 days in a normal January, and an inch or more covers the ground on 5 days.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00106305.
What are the records for January in Nampa?
The warmest January temperature on this station's record (since 1976) is 60°F, on January 10, 1990; the coldest is −20°F, on January 31, 1979. The wettest January brought 3.04 in (1997); the snowiest, 13.5 inches (1982).
Source: records: ACIS, station USC00106305. Records and recent months use complete months only.
How does January in Nampa compare across Idaho?
Across the 85 places PlainClimate covers in Idaho, January normal highs run from 27°F in Island Park to 44°F in Glenns Ferry; Nampa's is 40°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.