Suwanee weather in March

In March, Suwanee sees average daytime highs of 64°F and overnight lows near 44°F, with 4.6 in of precipitation across 10 wet days and about 11.7 hours of daylight. It is the 8th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 60°F in the first days to 67°F by the end. The sky is clear or mostly clear about 37% of the time in March, and the air most often feels dry.

Daylight stretches from about 11 h 12 min at the start of March to 12 h 18 min by month's end. Set against the rest of the year, March is Suwanee's 6th-clearest and 2nd-windiest month. For the whole year in context, see Suwanee's year-round climate.

Daytime high
64°
8th warmest
Overnight low
44°
5th coldest
Precipitation
4.6 in
10 wet days
Daylight
11 h 42 min
6:54 AM – 6:38 PM
Cloud cover
57%
6th clearest
Wind
8 mph
2nd windiest
Solar energy
4.4 kWh/m²
Travel score
5.7
out of 10

Suwanee is city in Gwinnett County, Georgia, U.S..

Density
659/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 60°F in the first days to 67°F by the end.

A typical March day in Suwanee reaches about 64°F in the afternoon and slips back to 44°F overnight — a 20°F spread between the day's warmth and the night's chill. On most days the high lands between 51°F and 75°F. Set against its neighbours, March runs about 8°F warmer than February and about 8°F cooler than April.

20°40°60°80°151015202531
Avg high (°F)Avg low (°F)
16040
26041
36041
46041
56141
66141
76141
86242
96242
106242
116242
126343
136343
146343
156444
166444
176444
186444
196445
206545
216545
226545
236546
246646
256646
266646
276747
286747
296747
306747
316848

How March really feels in Suwanee

Once humidity and wind are folded in, March averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

March sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Suwanee weather by month

How March compares with the rest of the year at a glance. March is the 8th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan52° / 35°4.610.40.6102.9
Feb56° / 37°4.69.90.510.73.8
Mar64° / 44°4.6100.111.75.7
Apr72° / 51°3.99.5012.86.8
May79° / 60°3.49.8013.76.7
Jun85° / 68°4.113.7014.24.8
Jul88° / 71°4.014.90144.0
Aug87° / 70°4.212.8013.34.4
Sep82° / 64°3.68.7012.26.4
Oct72° / 53°3.47.2011.17.3
Nov62° / 42°3.98.4010.25.7
Dec54° / 37°4.510.30.39.83.4

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 11% of March, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24852
34753
44852
54852
64852
74852
84852
94753
104753
114852
124852
134852
144753
154753
164753
174753
184753
194753
204852
214753
224852
234852
244852
254852
264852
274852
284852
294852
304852
314753

Chance of precipitation in March

Any precipitation

Suwanee gets around 4.6 in of rain and snow over 10 wet days in March, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 32% and peaks near 35% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
234
334
434
533
633
733
832
932
1032
1132
1231
1331
1431
1531
1631
1731
1831
1931
2031
2131
2231
2331
2431
2531
2632
2732
2832
2932
3032
3132

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

Most of March feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, March lands in the dry band about 87% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19181
29181
39181
49091
59091
69091
79091
889101
989101
1089101
1188111
1288111
1388111
1488111
1588111
1688111
1788111
1888111
1987121
2087121
2186122
2286122
2386122
2485132
2585132
2684133
2783143
2883143
2982153
3081154
3180164

Wind in March

Winds average 8 mph in March.

Across March, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
188light breeze
197light breeze
207light breeze
217light breeze
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in March

DaylightNight

Daylight runs from about 11 h 12 min at the start of March to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over March. Sunrise moves from 7:13 AM to 6:33 AM, and sunset from 6:26 PM to 6:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.27:136:26
211.27:126:26
311.37:116:27
411.37:106:28
511.37:086:29
611.47:076:30
711.47:066:31
811.47:056:32
911.57:036:32
1011.57:026:33
1111.67:016:34
1211.66:596:35
1311.66:586:36
1411.76:576:36
1511.76:556:37
1611.76:546:38
1711.86:526:39
1811.86:516:40
1911.86:506:40
2011.96:486:41
2111.96:476:42
2212.06:456:43
2312.06:446:44
2412.06:436:44
2512.16:416:45
2612.16:406:46
2712.16:386:47
2812.26:376:47
2912.26:366:48
3012.26:346:49
3112.36:336:50

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.4 kWh/m².

For context, solar energy here swings from a low near 2.3 kWh/m² to a high of 6.07 kWh/m² in June across the year — March's 4.4 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.9Moderate
33.9Moderate
44.0Moderate
54.0Bright
64.1Bright
74.1Bright
84.2Bright
94.2Bright
104.3Bright
114.3Bright
124.3Bright
134.3Bright
144.4Bright
154.4Bright
164.4Bright
174.5Bright
184.5Bright
194.5Bright
204.6Bright
214.6Bright
224.6Bright
234.7Bright
244.7Bright
254.7Bright
264.8Bright
274.8Bright
284.8Bright
294.9Bright
304.9Bright
315.0Bright
Planning a trip in March

Is March a good time to visit Suwanee?

Our two travel scores rate March for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.7
Sightseeing
5th-best month of the year
1.8
Beach & pool
8th-best month of the year

March is a reasonable time to visit Suwanee for sightseeing.

What to pack for Suwanee in March

From March's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In March, Suwanee sees daytime highs around 64°F and nights near 44°F. Worth packing: a warm layer and rain gear. About 10 days see rain.

a warm layerrain gear

UV index in Suwanee in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Suwanee peaks around June 23 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 23UV 10Dec 20UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr7High
May8Very high
Jun10Very high
Jul10Very high
Aug8Very high
Sep7Very high
Oct5High
Nov4Moderate
Dec3Moderate

Air quality in Suwanee in March

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where March falls, not just the annual average.

Air quality in Suwanee is worst in July — around 21 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (January, 8 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1621 µg/m³Jan 118 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb11Good
Mar13Moderate
Apr12Moderate
May15Moderate
Jun18Moderate
Jul21Moderate
Aug18Moderate
Sep13Moderate
Oct11Good
Nov10Good
Dec8Good
Location & terrain

Where is Suwanee?

Suwanee sits at 34.1°N, 84.1°W, 1,001 ft above sea level, in United States. The nearest listed city is Sugar Hill, 4.3 mi away.

Topography around Suwanee

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Suwanee.

Within 2 miles, the terrain around Suwanee has only modest variations in elevation — a maximum elevation change of 279 ft around an average of 1,030 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 797 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 3,950 ft.

The land around Suwanee is covered by trees (59%) and artificial surfaces (31%) within 2 miles, trees (61%) and artificial surfaces (25%) within 10 miles, and trees (82%) within 50 miles.

2 miles
279 ft
10 miles
797 ft
50 miles
3,950 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
March weather nearby: Sugar Hill 4.3 mi · Duluth 5.6 mi · Johns Creek 7.5 mi · Lawrenceville 8.1 mi · Peachtree Corners 11 mi · Norcross 11 mi · Alpharetta 13 mi · Snellville 14 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Suwanee (34.0515°, -84.0713°, elevation 1,001 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).