The highest day temperature in January 2026 was 81°F. The lowest night temperature was 10°F. The average values for day and night temperatures during January were 52.3°F и 38.9°F respectivly.

Most of the days in January are sunny but you can also expect cloudy and gloomy days.

Precipitation total in January for McKinney is 1.0 in.

The average wind speed in January is 10.4 mph.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for McKinney in January is 6.5 hours.