Lafayette weather in January: Lafayette, Indiana: normal highs, lows, rain and records for January
Lafayette in January has a normal high of 33°F and a normal low of 18°F, a daily mean of 26°F, holding near 33°F all month. Measurable precipitation falls on 9 days in a normal January, 2.19 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 1°C and low of −8°C, 56 mm of precipitation in January.
- NOAA stationLafayette Purdue University Airport
- Station IDUSW00014835
- Location40.41°N 86.94°W
- Elevation599 ft (183 m)
- Population71,757
- Jan 33° 18°
- Feb 38° 21°
- Mar 50° 30°
- Apr 62° 40°
- May 73° 51°
- Jun 81° 60°
- Jul 84° 63°
- Aug 83° 62°
- Sep 77° 54°
- Oct 65° 43°
- Nov 50° 33°
- Dec 38° 24°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Lafayette in January?
The normal high is 33°F and the normal low 18°F, for a daily mean of 25.8°F. January is 5.2°F cooler than December and 3.9°F cooler than February. January is the 12th warmest month of the year in Lafayette and the 11th wettest. From one year to the next January's mean temperature typically moves about 4.9°F either way (NOAA's standard deviation), so roughly two Januarys in three average between 21°F and 31°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 32%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| January 1 | 34°F | 20°F | 32% | 17% |
| January 8 | 33°F | 19°F | 31% | 17% |
| January 15 | 33°F | 18°F | 30% | 16% |
| January 22 | 33°F | 17°F | 29% | 15% |
| January 31 | 34°F | 18°F | 29% | 14% |
Every day of January: normal high, low and chance of precipitation (warmest afternoon January 1, coldest night January 22)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| January 1 | 34°F | 20°F | 32% | 17% | 9 h 20 min |
| January 2 | 34°F | 20°F | 31% | 17% | 9 h 20 min |
| January 3 | 34°F | 20°F | 31% | 17% | 9 h 20 min |
| January 4 | 34°F | 20°F | 31% | 17% | 9 h 20 min |
| January 5 | 34°F | 19°F | 31% | 17% | 9 h 20 min |
| January 6 | 34°F | 19°F | 31% | 17% | 9 h 20 min |
| January 7 | 34°F | 19°F | 31% | 17% | 9 h 30 min |
| January 8 | 33°F | 19°F | 31% | 17% | 9 h 30 min |
| January 9 | 33°F | 19°F | 31% | 17% | 9 h 30 min |
| January 10 | 33°F | 18°F | 31% | 17% | 9 h 30 min |
| January 11 | 33°F | 18°F | 31% | 16% | 9 h 30 min |
| January 12 | 33°F | 18°F | 31% | 16% | 9 h 30 min |
| January 13 | 33°F | 18°F | 30% | 16% | 9 h 30 min |
| January 14 | 33°F | 18°F | 30% | 16% | 9 h 30 min |
| January 15 | 33°F | 18°F | 30% | 16% | 9 h 40 min |
| January 16 | 33°F | 18°F | 30% | 16% | 9 h 40 min |
| January 17 | 33°F | 18°F | 30% | 16% | 9 h 40 min |
| January 18 | 33°F | 18°F | 30% | 15% | 9 h 40 min |
| January 19 | 33°F | 18°F | 30% | 15% | 9 h 40 min |
| January 20 | 33°F | 18°F | 30% | 15% | 9 h 40 min |
| January 21 | 33°F | 18°F | 29% | 15% | 9 h 40 min |
| January 22 | 33°F | 17°F | 29% | 15% | 9 h 50 min |
| January 23 | 33°F | 17°F | 29% | 15% | 9 h 50 min |
| January 24 | 33°F | 18°F | 29% | 15% | 9 h 50 min |
| January 25 | 33°F | 18°F | 29% | 15% | 9 h 50 min |
| January 26 | 34°F | 18°F | 29% | 15% | 9 h 50 min |
| January 27 | 34°F | 18°F | 29% | 15% | 10 h |
| January 28 | 34°F | 18°F | 29% | 15% | 10 h |
| January 29 | 34°F | 18°F | 29% | 14% | 10 h |
| January 30 | 34°F | 18°F | 29% | 14% | 10 h |
| January 31 | 34°F | 18°F | 29% | 14% | 10 h |
- Normal high
- 33°FJanuary average
- Normal low
- 18°FJanuary average
- Precipitation
- 2.19 inmonth total
- Days with precipitation
- 90.01 inch or more
- Nights at 32°F or colder
- 27
- Daylight
- 9 h 20 min to 10 hJanuary 1 to January 31
- Sunshine
- 61%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014835; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Lafayette in January?
On a given January day the chance of 0.01 inch or more is 30% on average, highest around January 1 (32%). In all, 2.19 in falls on 9 days of a normal January.
In a normal January in Lafayette, 27 nights fall to freezing and 13 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014835.
How humid and windy is Lafayette in January?
At 3 p.m. the normal temperature is 33°F with 63% relative humidity and a dew point of 21°F; at 6 a.m. it is 24°F with 80% humidity. The wind averages 9.0 mph, most often from the west in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 24°F | 18°F | 80% | 7.8 mph | 49% |
| 9 a.m. | 24°F | 19°F | 80% | 8.1 mph | 48% |
| noon | 30°F | 21°F | 69% | 10.8 mph | 52% |
| 3 p.m. | 33°F | 21°F | 63% | 11.3 mph | – |
| 6 p.m. | 31°F | 21°F | 67% | 9.6 mph | 49% |
| 9 p.m. | 28°F | 21°F | 75% | 8.4 mph | 51% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014835. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for January in Lafayette?
The warmest January temperature on this station's record (since 1944) is 69°F, on January 7, 2008; the coldest is −23°F, on January 20, 1985. The wettest January brought 9.11 in (1950); the snowiest, 22.6 inches (1982).
The January mean against the 1991-2020 normal of 25.8°F: 2021 31.7°F (+5.9), 2022 22.9°F (−2.9), 2023 35.2°F (+9.4), 2024 27.2°F (+1.4), 2025 22.1°F (−3.7), 2026 23.8°F (−2.0). 3 of 6 ran warmer than normal.
| January | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 31.7°F | +5.9°F | 1.83 in |
| 2022 | 22.9°F | −2.9°F | 0.46 in |
| 2023 | 35.2°F | +9.4°F | 1.38 in |
| 2024 | 27.2°F | +1.4°F | 4.89 in |
| 2025 | 22.1°F | −3.7°F | 0.62 in |
| 2026 | 23.8°F | −2.0°F | 0.35 in |
Source: records: ACIS, station USW00014835; recent months: ACIS, station USW00014835. Records and recent months use complete months only.
How does January in Lafayette compare across Indiana?
Across the 99 places PlainClimate covers in Indiana, January normal highs run from 31°F in Angola to 43°F in St. Meinrad; Lafayette's is 33°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.