Climate averages 1991–2020
Cary weather
in January.
A cool, wet month: the coolest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cool month in Cary: daytime highs average 9.5°C and nights cool to about 0.9°C. By daytime temperature it is the coolest month of the year.
Expect about 93 mm of rain on roughly 9 days, which makes January a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 02 min on an average January day.
The nearest other city in this atlas is Raleigh (13 km away). In January its highs average 9.8°C, about as warm as Cary, with 93 mm of rain.
Among the 498 cities listed in the United States, Cary ranks joint 250th of 498 for the warmest January highs and joint 380th of 498 for the driest January (rainfall, lowest first). The mean January high of those 498 cities is 9.5°C; Cary is 0.1°C warmer than that mean.
From January to February, average highs rise by 2.0°C to 11.6°C, and monthly rainfall falls from 93 mm to 81 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
Cary climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 9.5°C0.9°C | 0.9°C | 93 | 9.3 | 10.010 h |
| February | 11.6°C2.0°C | 2.0°C | 81 | 9.1 | 10.911 h |
| March | 15.7°C5.3°C | 5.3°C | 104 | 10.3 | 11.912 h |
| April | 21.0°C10.3°C | 10.3°C | 90 | 9.1 | 13.113 h |
| May | 25.3°C15.2°C | 15.2°C | 90 | 10.4 | 14.014 h |
| June | 29.2°C19.7°C | 19.7°C | 103 | 12.1 | 14.515 h |
| July | 31.0°C22.0°C | 22.0°C | 116 | 15.2 | 14.314 h |
| August | 29.8°C21.1°C | 21.1°C | 111 | 12.4 | 13.514 h |
| September | 26.6°C18.2°C | 18.2°C | 120 | 10.2 | 12.412 h |
| October | 21.2°C12.1°C | 12.1°C | 79 | 7.2 | 11.311 h |
| November | 15.5°C6.4°C | 6.4°C | 85 | 7.7 | 10.310 h |
| December | 11.2°C2.7°C | 2.7°C | 90 | 9.1 | 9.810 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
- Raleigh in JanuaryUnited States · 13 kmHigh 9.8°C · Low 1.0°C · 93 mm rain
- Durham in JanuaryUnited States · 25 kmHigh 9.5°C · Low 0.1°C · 92 mm rain
- Fayetteville in JanuaryUnited States · 83 kmHigh 11.2°C · Low 2.0°C · 90 mm rain
- Greensboro in JanuaryUnited States · 96 kmHigh 8.5°C · Low -0.6°C · 93 mm rain
- High Point in JanuaryUnited States · 112 kmHigh 8.6°C · Low -0.5°C · 95 mm rain
- Greenville in JanuaryUnited States · 129 kmHigh 10.9°C · Low 1.9°C · 94 mm rain
- Winston-Salem in JanuaryUnited States · 136 kmHigh 8.5°C · Low -0.8°C · 92 mm rain
- Concord (North Carolina), United States in JanuaryUnited States · 168 kmHigh 9.7°C · Low 0.8°C · 93 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 Cary) is explained once on the Cary year overview and on the Sources, method and limits page.
Raleigh lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.