Marshalltown weather in January: Marshalltown, Iowa: normal highs, lows, rain and records for January
Marshalltown in January has a normal high of 28°F and a normal low of 10°F, a daily mean of 19°F, holding near 28°F all month. Measurable precipitation falls on 5 days in a normal January, 0.77 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of −2°C and low of −12°C, 20 mm of precipitation in January.
- NOAA stationMarshalltown Municipal Airport
- Station IDUSW00094988
- Location42.11°N 92.92°W
- Elevation974 ft (297 m)
- From the center5 miles
- Population27,886
- Jan 28° 10°
- Feb 32° 14°
- Mar 46° 26°
- Apr 60° 37°
- May 71° 49°
- Jun 81° 59°
- Jul 83° 62°
- Aug 81° 60°
- Sep 75° 51°
- Oct 62° 39°
- Nov 46° 26°
- Dec 33° 16°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Marshalltown in January?
The normal high is 28°F and the normal low 10°F, for a daily mean of 18.9°F. January is 5.4°F cooler than December and 4.3°F cooler than February. January is the 12th warmest month of the year in Marshalltown and the 11th wettest. Across the month the normal high rises 1°F, from 28°F on January 1 to 29°F on January 31. From one year to the next January's mean temperature typically moves about 5.2°F either way (NOAA's standard deviation), so roughly two Januarys in three average between 14°F and 24°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 18%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| January 1 | 28°F | 12°F | 18% | 6% |
| January 8 | 28°F | 10°F | 17% | 6% |
| January 15 | 27°F | 10°F | 17% | 6% |
| January 22 | 28°F | 10°F | 17% | 6% |
| January 31 | 29°F | 10°F | 18% | 6% |
Every day of January: normal high, low and chance of precipitation (warmest afternoon January 31, coldest night January 19)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| January 1 | 28°F | 12°F | 18% | 6% | 9 h 10 min |
| January 2 | 28°F | 11°F | 18% | 6% | 9 h 10 min |
| January 3 | 28°F | 11°F | 17% | 6% | 9 h 10 min |
| January 4 | 28°F | 11°F | 17% | 6% | 9 h 10 min |
| January 5 | 28°F | 11°F | 17% | 6% | 9 h 10 min |
| January 6 | 28°F | 11°F | 17% | 6% | 9 h 10 min |
| January 7 | 28°F | 11°F | 17% | 6% | 9 h 10 min |
| January 8 | 28°F | 10°F | 17% | 6% | 9 h 20 min |
| January 9 | 28°F | 10°F | 17% | 6% | 9 h 20 min |
| January 10 | 27°F | 10°F | 17% | 6% | 9 h 20 min |
| January 11 | 27°F | 10°F | 17% | 6% | 9 h 20 min |
| January 12 | 27°F | 10°F | 17% | 6% | 9 h 20 min |
| January 13 | 27°F | 10°F | 17% | 6% | 9 h 20 min |
| January 14 | 27°F | 10°F | 17% | 6% | 9 h 20 min |
| January 15 | 27°F | 10°F | 17% | 6% | 9 h 30 min |
| January 16 | 27°F | 10°F | 17% | 6% | 9 h 30 min |
| January 17 | 27°F | 10°F | 17% | 6% | 9 h 30 min |
| January 18 | 27°F | 10°F | 17% | 6% | 9 h 30 min |
| January 19 | 27°F | 10°F | 17% | 6% | 9 h 30 min |
| January 20 | 27°F | 10°F | 17% | 6% | 9 h 30 min |
| January 21 | 27°F | 10°F | 17% | 6% | 9 h 40 min |
| January 22 | 28°F | 10°F | 17% | 6% | 9 h 40 min |
| January 23 | 28°F | 10°F | 17% | 6% | 9 h 40 min |
| January 24 | 28°F | 10°F | 17% | 6% | 9 h 40 min |
| January 25 | 28°F | 10°F | 17% | 6% | 9 h 40 min |
| January 26 | 28°F | 10°F | 17% | 6% | 9 h 50 min |
| January 27 | 28°F | 10°F | 17% | 6% | 9 h 50 min |
| January 28 | 28°F | 10°F | 17% | 6% | 9 h 50 min |
| January 29 | 28°F | 10°F | 17% | 6% | 9 h 50 min |
| January 30 | 28°F | 10°F | 17% | 6% | 9 h 50 min |
| January 31 | 29°F | 10°F | 18% | 6% | 10 h |
- Normal high
- 28°FJanuary average
- Normal low
- 10°FJanuary average
- Precipitation
- 0.77 inmonth total
- Days with precipitation
- 50.01 inch or more
- Nights at 32°F or colder
- 30
- Daylight
- 9 h 10 min to 10 hJanuary 1 to January 31
- Sunshine
- 70%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00094988; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Marshalltown in January?
On a given January day the chance of 0.01 inch or more is 17% on average, highest around January 1 (18%). In all, 0.77 in falls on 5 days of a normal January.
In a normal January in Marshalltown, 30 nights fall to freezing and 19 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094988.
What are the records for January in Marshalltown?
The warmest January temperature on this station's record (since 1996) is 65°F, on January 26, 2002; the coldest is −28°F, on January 16, 2009. The wettest January brought 1.93 in (2017).
The January mean against the 1991-2020 normal of 18.9°F: 2021 21.6°F (+2.7), 2022 13.6°F (−5.3), 2023 23.4°F (+4.6), 2024 21.1°F (+2.2), 2025 18.9°F (at normal), 2026 17.7°F (−1.2). 3 of 6 ran warmer than normal.
| January | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 21.6°F | +2.7°F | – |
| 2022 | 13.6°F | −5.3°F | – |
| 2023 | 23.4°F | +4.6°F | – |
| 2024 | 21.1°F | +2.2°F | – |
| 2025 | 18.9°F | at normal | 0.13 in |
| 2026 | 17.7°F | −1.2°F | 0.81 in |
Source: records: ACIS, station USW00094988; recent months: ACIS, station USW00094988. Records and recent months use complete months only.
How does January in Marshalltown compare across Iowa?
Across the 132 places PlainClimate covers in Iowa, January normal highs run from 21°F in Northwood to 33°F in Shenandoah; Marshalltown's is 28°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.