January is one of the cooler months of the year in Rexburg, with average highs near -3.1°C and lows around -13.3°C (mean -8.2°C). It is about average for rainfall, averaging 53 mm of rainfall and 91% relative humidity across the period.
January is one of the cooler months of the year in Rexburg. Across 45 years of records, the warmest January in Rexburg was 1981 — when the month averaged -2.3°C — while the coldest was 2007 at -12.1°C. Typical January days reach -3.1°C with nights near -13.3°C. The long-term January temperature trend is broadly flat.
January is about average for rainfall in Rexburg, averaging 53 mm of rainfall. The wettest January on record was 2008 with 98 mm, while the driest was 1992 at 13 mm.
Relative humidity in Rexburg during January averages 91%. The most humid January was 1989 at 96%, and the least humid was 1981 at 77%.
January receives about 1.8 kWh/m²/day of solar energy in Rexburg. The sunniest January was 2007 at 2.3 kWh/m²/day, and the cloudiest were 1997, 2003 and 2020 at 1.5.
Average wind speed in Rexburg during January is 1.9 m/s. The windiest January was 1990 at 2.6 m/s, while the calmest was 1985 at 1.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | -8.6°C | -8.1°C | -8.3°C | -8.0°C | -8.0°C | +0.6°C |
| Avg High | -3.6°C | -2.9°C | -3.2°C | -3.1°C | -2.8°C | +0.8°C |
| Avg Low | -13.6°C | -13.3°C | -13.4°C | -13.0°C | -13.2°C | +0.4°C |
| Avg Rain | 40 mm | 56 mm | 54 mm | 63 mm | 47 mm | +8 mm |
January temperatures in Rexburg have stayed relatively stable across the record.
January has ranged from a record low of -33.3°C (1984) to a record high of 9.6°C (1981).
Rainfall in January is about average for rainfall, averaging 53 mm, with a wettest year of 98 mm.
A quieter season to visit Rexburg
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Rexburg. That said, January — with days averaging -3.1°C and nights around -13.3°C (mean -8.2°C) and moderate rainfall (53 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | -4.0°C | -9.9°C | -15.9°C | 1.1°C | -32.2°C | 30 mm | 91% | 1.6 m/s | 2.2 |
| 2024 | -1.8°C | -6.5°C | -11.1°C | 8.2°C | -29.4°C | 49 mm | 89% | 1.8 m/s | 1.8 |
| 2023 | -3.5°C | -8.7°C | -13.8°C | 1.1°C | -33.3°C | 52 mm | 93% | 1.9 m/s | 1.9 |
| 2022 | -3.7°C | -8.7°C | -13.7°C | 0.4°C | -27.8°C | 24 mm | 92% | 1.7 m/s | 2 |
| 2021 | -2.2°C | -7.6°C | -13.0°C | 1.8°C | -18.4°C | 48 mm | 91% | 1.9 m/s | 1.8 |
| 2020 | -1.8°C | -6.7°C | -11.5°C | 0.9°C | -21.5°C | 82 mm | 94% | 2.2 m/s | 1.5 |
| 2019 | -2.8°C | -8.0°C | -13.3°C | 1.0°C | -24.4°C | 65 mm | 92% | 1.8 m/s | 1.8 |
| 2018 | -1.4°C | -6.2°C | -11.1°C | 2.6°C | -21.6°C | 77 mm | 91% | 1.8 m/s | 1.7 |
| 2017 | -5.8°C | -11.2°C | -16.5°C | 0.6°C | -29.5°C | 89 mm | 92% | 2 m/s | 1.8 |
| 2016 | -2.5°C | -7.3°C | -12.2°C | 1.3°C | -22.4°C | 74 mm | 93% | 1.6 m/s | 1.7 |
| 2015 | -2.3°C | -6.7°C | -11.0°C | 1.3°C | -19.9°C | 53 mm | 94% | 1.6 m/s | 1.8 |
| 2014 | -1.5°C | -7.2°C | -12.8°C | 1.9°C | -21.5°C | 39 mm | 86% | 1.9 m/s | 2 |
| 2013 | -6.3°C | -10.8°C | -15.3°C | 0.8°C | -27.3°C | 47 mm | 93% | 1.6 m/s | 1.8 |
| 2012 | -1.3°C | -6.3°C | -11.3°C | 4.4°C | -19.9°C | 64 mm | 84% | 2.4 m/s | 1.9 |
| 2011 | -4.5°C | -9.4°C | -14.2°C | 1.3°C | -24.8°C | 56 mm | 94% | 1.7 m/s | 1.7 |
| 2010 | -2.4°C | -7.4°C | -12.5°C | 0.8°C | -27.9°C | 68 mm | 91% | 1.6 m/s | 1.7 |
| 2009 | -2.9°C | -8.2°C | -13.4°C | 0.8°C | -31.6°C | 46 mm | 90% | 2 m/s | 1.7 |
| 2008 🌧️ | -5.4°C | -11.3°C | -17.2°C | 1.1°C | -26.4°C | 98 mm | 94% | 2.3 m/s | 1.8 |
| 2007 ❄️ | -6.1°C | -12.1°C | -18.1°C | 0.7°C | -32.3°C | 26 mm | 93% | 2 m/s | 2.3 |
| 2006 | -2.3°C | -7.2°C | -12.2°C | 1.5°C | -18.6°C | 88 mm | 93% | 2.3 m/s | 1.6 |
| 2005 | -2.4°C | -6.9°C | -11.4°C | 1.1°C | -19.3°C | 51 mm | 94% | 1.5 m/s | 1.8 |
| 2004 | -4.5°C | -9.2°C | -13.9°C | 0.5°C | -30.2°C | 60 mm | 95% | 1.8 m/s | 1.7 |
| 2003 | 0.8°C | -3.6°C | -8.0°C | 5.8°C | -13.3°C | 45 mm | 90% | 1.7 m/s | 1.5 |
| 2002 | -4.4°C | -9.0°C | -13.7°C | 0.9°C | -22.9°C | 48 mm | 94% | 1.9 m/s | 1.8 |
| 2001 | -2.7°C | -8.3°C | -14.0°C | 1.1°C | -19.6°C | 23 mm | 87% | 1.5 m/s | 2.1 |
| 2000 | -2.3°C | -7.1°C | -11.9°C | 2.0°C | -19.2°C | 59 mm | 92% | 1.8 m/s | 1.6 |
| 1999 | -1.0°C | -6.5°C | -11.9°C | 2.4°C | -19.2°C | 63 mm | 89% | 2 m/s | 1.6 |
| 1998 | -1.1°C | -5.7°C | -10.3°C | 2.1°C | -18.4°C | 74 mm | 93% | 2.2 m/s | 1.6 |
| 1997 | -4.6°C | -9.7°C | -14.8°C | 1.3°C | -27.8°C | 86 mm | 95% | 2.2 m/s | 1.5 |
| 1996 | -3.8°C | -9.5°C | -15.2°C | 1.3°C | -28.1°C | 74 mm | 92% | 2.2 m/s | 1.6 |
| 1995 | -2.4°C | -7.4°C | -12.3°C | 1.8°C | -26.3°C | 75 mm | 91% | 1.8 m/s | 1.8 |
| 1994 | -1.6°C | -6.4°C | -11.2°C | 2.9°C | -21.6°C | 30 mm | 90% | 1.9 m/s | 1.6 |
| 1993 | -4.4°C | -10.0°C | -15.5°C | 0.6°C | -26.4°C | 57 mm | 93% | 1.8 m/s | 1.9 |
| 1992 | -2.8°C | -8.0°C | -13.2°C | 3.4°C | -22.6°C | 13 mm | 89% | 1.6 m/s | 1.9 |
| 1991 | -5.8°C | -11.4°C | -16.9°C | 0.4°C | -30.0°C | 29 mm | 94% | 1.7 m/s | 1.8 |
| 1990 | -1.4°C | -6.6°C | -11.8°C | 3.6°C | -19.7°C | 55 mm | 88% | 2.6 m/s | 1.6 |
| 1989 | -5.6°C | -10.8°C | -16.0°C | -0.8°C | -25.3°C | 60 mm | 96% | 2 m/s | 1.6 |
| 1988 | -4.9°C | -10.5°C | -16.1°C | 1.0°C | -24.9°C | 47 mm | 92% | 1.9 m/s | 1.6 |
| 1987 | -3.6°C | -9.1°C | -14.6°C | 2.5°C | -25.5°C | 43 mm | 89% | 2 m/s | 1.7 |
| 1986 | -1.9°C | -6.7°C | -11.4°C | 2.2°C | -18.3°C | 43 mm | 91% | 1.6 m/s | 1.7 |
| 1985 | -5.7°C | -11.0°C | -16.4°C | -0.6°C | -32.6°C | 21 mm | 93% | 1.3 m/s | 2 |
| 1984 | -6.3°C | -10.9°C | -15.5°C | -0.1°C | -33.3°C | 22 mm | 95% | 1.5 m/s | 1.7 |
| 1983 | -1.3°C | -5.8°C | -10.3°C | 1.3°C | -17.9°C | 31 mm | 91% | 1.8 m/s | — |
| 1982 | -5.6°C | -10.5°C | -15.5°C | 0.5°C | -29.6°C | 65 mm | 95% | 2.4 m/s | — |
| 1981 🔥 | 2.4°C | -2.3°C | -6.9°C | 9.6°C | -12.4°C | 26 mm | 77% | 1.5 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around -3.1°C with lows near -13.3°C (mean -8.2°C), based on 45 years of NASA POWER data.
January averages 53 mm of rainfall in Rexburg, about average for rainfall. The wettest on record was 98 mm in 2008.
The hottest January reached 9.6°C in 1981. The coldest dipped to -33.3°C in 1984.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have fallen by about 0.2°C — but days and nights have moved in opposite directions. Daytime highs rose from -3.3°C to -3°C while overnight lows fell from -12.9°C to -13.5°C, widening the gap between day and night.
January is one of the cooler months of the year in Rexburg and about average for rainfall, so plan for around -3.1°C daytime highs and -13.3°C at night.
Yes — January is the coldest month of the year in Rexburg, averaging -8.2°C.
For January in Rexburg, pack warm layers and a jacket for chilly mornings, with typical highs of -3.1°C and lows of -13.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in January averages 91% — quite humid.
Average wind speed in January is 1.9 m/s. The windiest January on record averaged 2.6 m/s (1990).
The wettest January on record was 2008 with 98 mm. On average, January sees 53 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Rexburg behaves each January, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for January specifically, along with year-by-year records and how the month has changed over the decades.
