Weather in Reston in January
How warm is it in Reston in January?
In January the typical daytime high in Reston is 6.1 °C on average, from 7.0 °C at the start to 6.2 °C at the end of the month.
That is 1.9 °C cooler than in December and 2.0 °C cooler than in February.
The last 10 years were 0.6 °C warmer than more than 40 years ago.
Click a day for more: afternoon and night, the usual range, records and how fast it is warming.
Measured at the weather station Washington, 26 km away.