January is one of the cooler months of the year in San Angelo, with average highs near 14.7°C and lows around 0.8°C (mean 7.8°C). It is one of the drier months, averaging 22 mm of rainfall and 62% relative humidity across the period.
January is one of the cooler months of the year in San Angelo. Across 45 years of records, the warmest January in San Angelo was 2006 — when the month averaged 11.2°C — while the coldest was 1985 at 3.9°C. Typical January days reach 14.7°C with nights near 0.8°C. The long-term trend is warming, about 0.2°C per decade.
January is one of the drier months in San Angelo, averaging 22 mm of rainfall. The wettest January on record was 1991 with 65 mm, while the driest was 2014 at 0 mm.
Relative humidity in San Angelo during January averages 62%. The most humid January was 2005 at 74%, and the least humid was 2006 at 44%.
January receives about 3.3 kWh/m²/day of solar energy in San Angelo. The sunniest January was 2014 at 3.8 kWh/m²/day, and the cloudiest was 2007 at 2.4.
Average wind speed in San Angelo during January is 3.3 m/s. The windiest Januarys were 1982 and 1996 at 3.9 m/s, while the calmest were 1981 and 1992 at 2.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 6.8°C | 8.0°C | 8.6°C | 7.6°C | 7.9°C | +1.1°C |
| Avg High | 13.6°C | 14.9°C | 15.6°C | 14.6°C | 14.8°C | +1.2°C |
| Avg Low | 0.1°C | 1.0°C | 1.6°C | 0.6°C | 0.8°C | +0.7°C |
| Avg Rain | 21 mm | 25 mm | 16 mm | 28 mm | 19 mm | -2 mm |
January temperatures in San Angelo have risen by about 1.3°C between 1981–1985 and 2021–2025.
January has ranged from a record low of -11.4°C (1985) to a record high of 30°C (2000).
Rainfall in January is one of the drier months, averaging 22 mm, with a wettest year of 65 mm.
A quieter season to visit San Angelo
If your dates are flexible, the more temperate months of April and October tend to be the most comfortable for visiting San Angelo. That said, January — with days averaging 14.7°C and nights around 0.8°C (mean 7.8°C) and low rainfall (22 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 | 12.3°C | 5.6°C | -1.1°C | 22.4°C | -7.4°C | 20 mm | 59% | 3.3 m/s | 3.5 |
| 2024 | 13.0°C | 6.3°C | -0.3°C | 21.4°C | -10.8°C | 21 mm | 62% | 3.3 m/s | 3.4 |
| 2023 | 17.1°C | 10.0°C | 2.8°C | 26.3°C | -5.6°C | 12 mm | 56% | 3.5 m/s | 3.5 |
| 2022 | 15.3°C | 7.6°C | -0.2°C | 24.7°C | -5.8°C | 5 mm | 46% | 3.3 m/s | 3.7 |
| 2021 | 14.1°C | 7.4°C | 0.7°C | 22.1°C | -6.2°C | 30 mm | 66% | 3.2 m/s | 3.3 |
| 2020 | 17.2°C | 10.2°C | 3.1°C | 24.3°C | -2.5°C | 29 mm | 63% | 3.3 m/s | 3.2 |
| 2019 | 14.1°C | 7.6°C | 1.1°C | 22.7°C | -4.4°C | 12 mm | 71% | 3.4 m/s | 3.3 |
| 2018 | 14.8°C | 7.2°C | -0.3°C | 23.9°C | -7.7°C | 1 mm | 54% | 3.3 m/s | 3.7 |
| 2017 | 16.2°C | 9.3°C | 2.4°C | 24.8°C | -7.8°C | 47 mm | 64% | 3.6 m/s | 3.4 |
| 2016 | 14.6°C | 7.8°C | 0.9°C | 25.1°C | -4.7°C | 2 mm | 66% | 3.2 m/s | 3.5 |
| 2015 | 11.9°C | 5.9°C | -0.1°C | 26.6°C | -6.7°C | 59 mm | 67% | 3.1 m/s | 3 |
| 2014 | 14.6°C | 6.7°C | -1.1°C | 25.9°C | -8.6°C | 0 mm | 53% | 3.7 m/s | 3.8 |
| 2013 | 14.4°C | 7.7°C | 1.1°C | 26.6°C | -6.0°C | 34 mm | 65% | 3.2 m/s | 3.4 |
| 2012 | 16.9°C | 9.3°C | 1.8°C | 26.5°C | -3.1°C | 60 mm | 58% | 3.5 m/s | 3.7 |
| 2011 | 15.0°C | 7.4°C | -0.2°C | 23.9°C | -6.9°C | 12 mm | 57% | 2.8 m/s | 3.5 |
| 2010 | 13.1°C | 6.6°C | 0.0°C | 24.6°C | -7.7°C | 52 mm | 68% | 3.4 m/s | 3.2 |
| 2009 | 17.2°C | 9.0°C | 0.8°C | 26.9°C | -4.5°C | 1 mm | 44% | 3.5 m/s | 3.7 |
| 2008 | 14.0°C | 7.1°C | 0.2°C | 24.3°C | -6.2°C | 5 mm | 56% | 3.4 m/s | 3.3 |
| 2007 | 10.5°C | 4.9°C | -0.7°C | 22.6°C | -5.5°C | 40 mm | 72% | 3.1 m/s | 2.4 |
| 2006 🔥 | 18.9°C | 11.2°C | 3.5°C | 28.4°C | -2.6°C | 5 mm | 44% | 3.6 m/s | 3.6 |
| 2005 | 16.0°C | 9.9°C | 3.7°C | 25.2°C | -4.5°C | 16 mm | 74% | 3.3 m/s | 2.9 |
| 2004 | 16.0°C | 9.7°C | 3.5°C | 24.8°C | -5.8°C | 36 mm | 67% | 3.4 m/s | 3 |
| 2003 | 15.1°C | 7.7°C | 0.4°C | 24.6°C | -6.2°C | 5 mm | 66% | 3.1 m/s | 3.6 |
| 2002 | 16.7°C | 9.1°C | 1.5°C | 25.2°C | -5.4°C | 11 mm | 60% | 3.4 m/s | 3.4 |
| 2001 | 12.8°C | 6.5°C | 0.1°C | 21.9°C | -4.2°C | 30 mm | 70% | 3.2 m/s | 3 |
| 2000 | 18.3°C | 10.6°C | 2.8°C | 30.0°C | -5.9°C | 7 mm | 50% | 3.6 m/s | 3.5 |
| 1999 | 17.6°C | 9.7°C | 1.7°C | 26.2°C | -6.1°C | 16 mm | 57% | 3.7 m/s | 3.5 |
| 1998 | 18.0°C | 10.5°C | 3.0°C | 22.8°C | -2.6°C | 13 mm | 64% | 3.3 m/s | 3.4 |
| 1997 | 13.5°C | 6.8°C | 0.1°C | 26.0°C | -7.3°C | 6 mm | 60% | 3.7 m/s | 3.1 |
| 1996 | 15.0°C | 7.1°C | -0.8°C | 24.2°C | -7.6°C | 3 mm | 47% | 3.9 m/s | 3.7 |
| 1995 | 15.4°C | 8.3°C | 1.3°C | 24.1°C | -5.9°C | 15 mm | 61% | 3.3 m/s | 3.2 |
| 1994 | 14.3°C | 7.7°C | 1.1°C | 22.7°C | -5.7°C | 47 mm | 63% | 3.3 m/s | 3.2 |
| 1993 | 14.3°C | 7.5°C | 0.7°C | 23.0°C | -6.2°C | 24 mm | 69% | 3 m/s | 2.5 |
| 1992 | 12.1°C | 6.5°C | 0.8°C | 19.2°C | -6.8°C | 45 mm | 73% | 2.7 m/s | 3.1 |
| 1991 🌧️ | 12.4°C | 6.3°C | 0.1°C | 21.1°C | -4.7°C | 65 mm | 73% | 3 m/s | 2.6 |
| 1990 | 16.8°C | 9.5°C | 2.1°C | 23.9°C | -3.9°C | 21 mm | 52% | 3.6 m/s | 3.5 |
| 1989 | 16.3°C | 9.7°C | 3.1°C | 23.6°C | -5.2°C | 17 mm | 56% | 3.3 m/s | 3.1 |
| 1988 | 12.4°C | 5.7°C | -1.0°C | 23.4°C | -6.4°C | 1 mm | 64% | 3.4 m/s | 3 |
| 1987 | 13.1°C | 6.6°C | 0.1°C | 22.1°C | -6.5°C | 16 mm | 70% | 3.3 m/s | 3.4 |
| 1986 | 17.2°C | 9.3°C | 1.4°C | 25.6°C | -4.2°C | 5 mm | 56% | 3.3 m/s | 3.7 |
| 1985 ❄️ | 10.5°C | 3.9°C | -2.7°C | 21.1°C | -11.4°C | 17 mm | 68% | 3.3 m/s | 3 |
| 1984 | 11.2°C | 5.1°C | -1.1°C | 21.6°C | -8.0°C | 36 mm | 68% | 2.8 m/s | 3 |
| 1983 | 13.7°C | 6.7°C | -0.3°C | 20.2°C | -5.9°C | 48 mm | 70% | 2.9 m/s | — |
| 1982 | 14.7°C | 7.3°C | 0.0°C | 23.8°C | -10.3°C | 21 mm | 57% | 3.9 m/s | — |
| 1981 | 13.7°C | 7.3°C | 1.0°C | 22.3°C | -3.8°C | 29 mm | 67% | 2.7 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 14.7°C with lows near 0.8°C (mean 7.8°C), based on 45 years of NASA POWER data.
January averages 22 mm of rainfall in San Angelo, one of the drier months. The wettest on record was 65 mm in 1991.
The hottest January reached 30°C in 2000. The coldest dipped to -11.4°C in 1985.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 1.3°C. Daytime highs moved from 12.8°C to 14.4°C and overnight lows from -0.6°C to 0.4°C over the same span.
January is one of the cooler months of the year in San Angelo and one of the drier months, so plan for around 14.7°C daytime highs and 0.8°C at night.
Yes — January is the coldest month of the year in San Angelo, averaging 7.8°C.
For January in San Angelo, pack warm layers and a jacket for chilly mornings, with typical highs of 14.7°C and lows of 0.8°C.
Relative humidity in January averages 62% — moderately humid.
Average wind speed in January is 3.3 m/s. The windiest January on record averaged 3.9 m/s (1982).
The wettest January on record was 1991 with 65 mm. On average, January sees 22 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 San Angelo 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.
