Climate averages 1991–2020
Johns Creek weather
in March.
A mild, wet month: the 8th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a mild month in Johns Creek: daytime highs average 16.8°C and nights cool to about 6.5°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 120 mm of rain on roughly 10 days, which makes March a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 57 min on an average March day.
The nearest other city in this atlas is Roswell (15 km away). In March its highs average 16.6°C, about as warm as Johns Creek, with 120 mm of rain.
Among the 498 cities listed in the United States, Johns Creek ranks joint 231st of 498 for the warmest March highs and joint 454th of 498 for the driest March (rainfall, lowest first). The mean March high of those 498 cities is 14.9°C; Johns Creek is 1.9°C warmer than that mean.
From March to April, average highs rise by 4.6°C to 21.5°C, and monthly rainfall falls from 120 mm to 102 mm.
The annual picture
March 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
Johns Creek climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 10.6°C1.7°C | 1.7°C | 116 | 10.4 | 10.210 h |
| February | 12.8°C3.2°C | 3.2°C | 117 | 10.1 | 10.911 h |
| March, selected | 16.8°C6.5°C | 6.5°C | 120 | 10.3 | 12.012 h |
| April | 21.5°C10.7°C | 10.7°C | 102 | 9.6 | 13.013 h |
| May | 25.8°C15.5°C | 15.5°C | 85 | 9.8 | 13.914 h |
| June | 29.2°C19.8°C | 19.8°C | 104 | 13.6 | 14.414 h |
| July | 30.8°C21.8°C | 21.8°C | 104 | 14.6 | 14.214 h |
| August | 30.2°C21.4°C | 21.4°C | 104 | 12.6 | 13.413 h |
| September | 27.4°C18.5°C | 18.5°C | 91 | 8.6 | 12.412 h |
| October | 22.1°C12.6°C | 12.6°C | 86 | 7.2 | 11.411 h |
| November | 16.3°C6.8°C | 6.8°C | 99 | 8.5 | 10.410 h |
| December | 11.8°C3.3°C | 3.3°C | 117 | 10.3 | 9.910 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
March in nearby cities
- Roswell in MarchUnited States · 15 kmHigh 16.6°C · Low 6.3°C · 120 mm rain
- Sandy Springs in MarchUnited States · 20 kmHigh 16.6°C · Low 6.4°C · 120 mm rain
- Atlanta in MarchUnited States · 36 kmHigh 17.0°C · Low 6.3°C · 113 mm rain
- South Fulton in MarchUnited States · 65 kmHigh 17.4°C · Low 7.3°C · 112 mm rain
- Athens, United States in MarchUnited States · 76 kmHigh 17.5°C · Low 6.8°C · 114 mm rain
- Macon in MarchUnited States · 142 kmHigh 19.5°C · Low 8.3°C · 100 mm rain
- East Chattanooga in MarchUnited States · 150 kmHigh 16.2°C · Low 5.4°C · 133 mm rain
- Chattanooga in MarchUnited States · 152 kmHigh 16.3°C · Low 5.6°C · 133 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 Johns Creek) is explained once on the Johns Creek year overview and on the Sources, method and limits page.
Roswell lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.