January is one of the cooler months of the year in Mission, with average highs near 22.1°C and lows around 9.9°C (mean 16°C). It is one of the drier months, averaging 29 mm of rainfall and 71% relative humidity across the period.
January is one of the cooler months of the year in Mission. Across 45 years of records, the warmest January in Mission was 1989 — when the month averaged 19.6°C — while the coldest was 1985 at 12°C. Typical January days reach 22.1°C with nights near 9.9°C. The long-term January temperature trend is broadly flat.
January is one of the drier months in Mission, averaging 29 mm of rainfall. The wettest January on record was 1984 with 112 mm, while the driest was 1982 at 1 mm.
Relative humidity in Mission during January averages 71%. The most humid January was 2007 at 78%, and the least humid was 2006 at 62%.
January receives about 3.2 kWh/m²/day of solar energy in Mission. The sunniest January was 1999 at 4.1 kWh/m²/day, and the cloudiest was 1993 at 2.3.
Average wind speed in Mission during January is 3.1 m/s. The windiest January was 2002 at 3.7 m/s, while the calmest was 1983 at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.0°C | 16.5°C | 16.8°C | 15.3°C | 16.3°C | +1.3°C |
| Avg High | 21.1°C | 22.6°C | 22.7°C | 21.4°C | 22.5°C | +1.4°C |
| Avg Low | 9.0°C | 10.4°C | 10.9°C | 9.1°C | 10.1°C | +1.1°C |
| Avg Rain | 39 mm | 23 mm | 24 mm | 29 mm | 30 mm | -9 mm |
January temperatures in Mission have risen by about 1.4°C between 1981–1985 and 2021–2025.
January has ranged from a record low of -5.5°C (1985) to a record high of 35.2°C (2013).
Rainfall in January is one of the drier months, averaging 29 mm, with a wettest year of 112 mm.
A good time to visit Mission
January is a good time to visit Mission, with days averaging 22.1°C and nights around 9.9°C (mean 16°C, cooler than Mission's yearly average) and low rainfall. March and November are marginally more temperate, but January still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 19.1°C | 13.5°C | 7.9°C | 30.4°C | -4.1°C | 41 mm | 71% | 3.1 m/s | 2.9 |
| 2024 | 21.6°C | 15.2°C | 8.8°C | 29.4°C | -3.5°C | 39 mm | 71% | 2.7 m/s | 3.4 |
| 2023 | 25.9°C | 19.3°C | 12.6°C | 31.7°C | 5.7°C | 5 mm | 70% | 3.1 m/s | 3.5 |
| 2022 | 20.3°C | 14.1°C | 7.9°C | 32.4°C | 0.9°C | 56 mm | 72% | 2.9 m/s | 3.2 |
| 2021 | 23.5°C | 16.7°C | 9.9°C | 32.0°C | 1.0°C | 26 mm | 69% | 2.9 m/s | 3.4 |
| 2020 | 24.9°C | 19.1°C | 13.2°C | 31.0°C | 6.9°C | 14 mm | 70% | 3.2 m/s | 3.2 |
| 2019 | 21.4°C | 15.8°C | 10.2°C | 28.2°C | 4.2°C | 44 mm | 74% | 3.1 m/s | 3.1 |
| 2018 | 19.8°C | 13.5°C | 7.2°C | 28.4°C | -0.4°C | 16 mm | 67% | 3 m/s | 3.3 |
| 2017 | 25.1°C | 18.6°C | 12.1°C | 32.4°C | -1.5°C | 21 mm | 67% | 3.5 m/s | 3.5 |
| 2016 | 20.7°C | 14.4°C | 8.0°C | 28.1°C | 2.9°C | 44 mm | 73% | 2.9 m/s | 3.4 |
| 2015 | 18.1°C | 12.6°C | 7.0°C | 28.1°C | 1.2°C | 52 mm | 77% | 2.8 m/s | 2.8 |
| 2014 | 19.9°C | 13.1°C | 6.2°C | 26.8°C | -1.2°C | 13 mm | 72% | 3 m/s | 3.7 |
| 2013 | 22.3°C | 16.4°C | 10.5°C | 35.2°C | 2.4°C | 28 mm | 68% | 3.4 m/s | 3.1 |
| 2012 | 24.8°C | 18.2°C | 11.5°C | 32.2°C | 3.5°C | 3 mm | 66% | 3.2 m/s | 3.4 |
| 2011 | 22.7°C | 16.3°C | 10.0°C | 29.2°C | 2.6°C | 29 mm | 69% | 2.9 m/s | 3.3 |
| 2010 | 19.6°C | 13.8°C | 8.0°C | 27.7°C | -4.1°C | 37 mm | 73% | 3.3 m/s | 3.3 |
| 2009 | 24.4°C | 17.9°C | 11.5°C | 30.9°C | 6.5°C | 2 mm | 64% | 3.1 m/s | 3.6 |
| 2008 | 21.1°C | 15.5°C | 10.0°C | 31.5°C | 2.0°C | 29 mm | 70% | 3.4 m/s | 3.2 |
| 2007 | 18.6°C | 13.7°C | 8.8°C | 28.2°C | 1.4°C | 62 mm | 78% | 3.3 m/s | 2.5 |
| 2006 | 25.6°C | 18.9°C | 12.1°C | 31.4°C | 5.9°C | 1 mm | 62% | 3.2 m/s | 3.9 |
| 2005 | 24.5°C | 18.8°C | 13.1°C | 31.5°C | 5.0°C | 22 mm | 73% | 3.3 m/s | 3 |
| 2004 | 21.7°C | 16.9°C | 12.1°C | 29.0°C | 4.1°C | 43 mm | 77% | 3.3 m/s | 2.8 |
| 2003 | 20.4°C | 14.6°C | 8.8°C | 29.4°C | 1.9°C | 28 mm | 76% | 2.7 m/s | 2.9 |
| 2002 | 24.1°C | 17.4°C | 10.8°C | 33.0°C | -1.4°C | 6 mm | 69% | 3.7 m/s | 3.8 |
| 2001 | 21.3°C | 15.5°C | 9.6°C | 29.8°C | 0.7°C | 19 mm | 72% | 3.5 m/s | 2.8 |
| 2000 | 25.4°C | 19.0°C | 12.5°C | 32.0°C | 2.1°C | 26 mm | 69% | 3.3 m/s | 3.4 |
| 1999 | 24.4°C | 17.5°C | 10.7°C | 32.1°C | 1.8°C | 16 mm | 68% | 3.6 m/s | 4.1 |
| 1998 | 25.2°C | 18.8°C | 12.3°C | 30.1°C | 5.2°C | 20 mm | 72% | 3.2 m/s | 3.6 |
| 1997 | 21.1°C | 15.0°C | 8.9°C | 32.2°C | -0.4°C | 11 mm | 67% | 3.3 m/s | 2.7 |
| 1996 | 22.4°C | 15.1°C | 7.7°C | 30.0°C | -2.2°C | 9 mm | 66% | 3.4 m/s | 3.9 |
| 1995 | 22.8°C | 16.8°C | 10.9°C | 30.4°C | 4.9°C | 21 mm | 67% | 3.2 m/s | 3.3 |
| 1994 | 22.5°C | 16.9°C | 11.2°C | 29.8°C | 1.5°C | 47 mm | 72% | 3.2 m/s | 3.1 |
| 1993 | 22.1°C | 16.5°C | 10.8°C | 29.0°C | 2.7°C | 15 mm | 72% | 2.8 m/s | 2.3 |
| 1992 | 19.0°C | 14.3°C | 9.5°C | 27.0°C | 1.2°C | 63 mm | 78% | 2.7 m/s | 2.4 |
| 1991 | 22.0°C | 16.0°C | 9.9°C | 30.8°C | 4.1°C | 22 mm | 71% | 3 m/s | 2.7 |
| 1990 | 24.7°C | 18.4°C | 12.1°C | 32.4°C | 4.4°C | 7 mm | 67% | 3.4 m/s | 3.2 |
| 1989 🔥 | 25.4°C | 19.6°C | 13.7°C | 31.2°C | 4.6°C | 18 mm | 72% | 3.1 m/s | 2.7 |
| 1988 | 19.1°C | 13.1°C | 7.2°C | 28.4°C | -1.2°C | 44 mm | 69% | 3.1 m/s | 2.6 |
| 1987 | 20.7°C | 14.7°C | 8.6°C | 28.2°C | 1.0°C | 34 mm | 72% | 2.7 m/s | 3.3 |
| 1986 | 22.9°C | 16.2°C | 9.6°C | 28.9°C | 1.5°C | 17 mm | 69% | 2.8 m/s | 3.4 |
| 1985 ❄️ | 18.1°C | 12.0°C | 5.8°C | 30.1°C | -5.5°C | 38 mm | 70% | 3.2 m/s | 2.7 |
| 1984 🌧️ | 17.7°C | 13.0°C | 8.2°C | 25.8°C | -1.8°C | 112 mm | 75% | 3 m/s | 2.6 |
| 1983 | 21.4°C | 15.2°C | 9.1°C | 30.5°C | 1.6°C | 24 mm | 71% | 2.5 m/s | — |
| 1982 | 23.8°C | 16.7°C | 9.7°C | 32.1°C | -3.7°C | 1 mm | 62% | 3.6 m/s | — |
| 1981 | 20.4°C | 14.9°C | 9.4°C | 27.4°C | 2.1°C | 66 mm | 75% | 2.9 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 22.1°C with lows near 9.9°C (mean 16°C), based on 45 years of NASA POWER data.
January averages 29 mm of rainfall in Mission, one of the drier months. The wettest on record was 112 mm in 1984.
The hottest January reached 35.2°C in 2013. The coldest dipped to -5.5°C in 1985.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 1.4°C. Daytime highs moved from 20.3°C to 22.1°C and overnight lows from 8.4°C to 9.4°C over the same span.
January is one of the cooler months of the year in Mission and one of the drier months, so plan for around 22.1°C daytime highs and 9.9°C at night.
Yes — January is the coldest month of the year in Mission, averaging 16°C.
For January in Mission, pack light layers you can adjust through the day, with typical highs of 22.1°C and lows of 9.9°C.
Relative humidity in January averages 71% — moderately humid.
Average wind speed in January is 3.1 m/s. The windiest January on record averaged 3.7 m/s (2002).
The wettest January on record was 1984 with 112 mm. On average, January sees 29 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 Mission 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.
