Climate averages 1991–2020
Merced weather
in January.
A cool, wet month: the 11th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cool month in Merced: daytime highs average 14.2°C and nights cool to about 4.3°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 90 mm of rain on roughly 8 days, which makes January a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 9 h 54 min on an average January day.
The nearest other city in this atlas is Turlock (39 km away). In January its highs average 14.2°C, about as warm as Merced, with 88 mm of rain.
Among the 498 cities listed in the United States, Merced ranks joint 157th of 498 for the warmest January highs and joint 352nd of 498 for the driest January (rainfall, lowest first). The mean January high of those 498 cities is 9.5°C; Merced is 4.7°C warmer than that mean.
From January to February, average highs rise by 1.8°C to 16.0°C, and monthly rainfall falls from 90 mm to 80 mm.
The annual picture
January in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Merced climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 14.2°C4.3°C | 4.3°C | 90 | 8.1 | 9.910 h |
| February | 16.0°C5.6°C | 5.6°C | 80 | 8.5 | 10.811 h |
| March | 18.9°C7.6°C | 7.6°C | 71 | 7.7 | 11.912 h |
| April | 22.5°C9.9°C | 9.9°C | 32 | 4.7 | 13.113 h |
| May | 27.8°C13.7°C | 13.7°C | 19 | 2.8 | 14.114 h |
| June | 32.9°C17.3°C | 17.3°C | 3.6 | 0.6 | 14.715 h |
| July | 36.2°C20.2°C | 20.2°C | 0.6 | 0.2 | 14.514 h |
| August | 35.3°C19.6°C | 19.6°C | 0.6 | 0.1 | 13.614 h |
| September | 32.2°C17.3°C | 17.3°C | 1.7 | 0.4 | 12.512 h |
| October | 26.0°C12.7°C | 12.7°C | 21 | 2.3 | 11.311 h |
| November | 18.7°C7.6°C | 7.6°C | 37 | 4.8 | 10.210 h |
| December | 13.9°C4.4°C | 4.4°C | 75 | 7.4 | 9.610 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Turlock in JanuaryUnited States · 39 kmHigh 14.2°C · Low 5.0°C · 88 mm rain
- Modesto in JanuaryUnited States · 59 kmHigh 14.0°C · Low 4.9°C · 92 mm rain
- Manteca in JanuaryUnited States · 85 kmHigh 13.8°C · Low 4.7°C · 84 mm rain
- Clovis in JanuaryUnited States · 87 kmHigh 14.3°C · Low 3.7°C · 89 mm rain
- Fresno in JanuaryUnited States · 88 kmHigh 14.5°C · Low 4.2°C · 89 mm rain
- Tracy in JanuaryUnited States · 96 kmHigh 14.2°C · Low 5.0°C · 85 mm rain
- Stockton in JanuaryUnited States · 102 kmHigh 13.7°C · Low 4.7°C · 102 mm rain
- Livermore in JanuaryUnited States · 121 kmHigh 13.9°C · Low 5.3°C · 86 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Merced) is explained once on the Merced year overview and on the Sources, method and limits page.