Cary, NC Climate: Temperature & Rain by Month
Temperature and precipitation from NOAA NCEI 1991–2020 normals →, plus PlainClimate's derived comfort score
30-year climate normals (1991-2020) from Cary's primary NOAA station, CARY.
The climate verdict for Cary
Water is the standout signal in Cary, North Carolina: 48.8 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 60°F. It scores 80/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 76% of them.
- 60°F
- annual average temperature (NOAA normal)
- 80/100
- comfort score, above 76% of station-mapped location scores
- 48.8"
- yearly precipitation total
- 224 days
- frost-free growing season
Cary: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00311535 · Cary, NC 60°F mean · 48.8" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-MID · SWING-MID · COMF-TOP · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-MILD 60°F
- RANK-UPPER #5,077
- PHOTO-FINISH ≈ Oceana
- PRCP-MID 48.8"
- SWING-MID 38°F
- COMF-TOP 80/100
- LOAD-HEAT 3,430 HDD
- STN-1 USC00311535
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Oceana, VA (+ 0.1 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every NC station list.
- Cary (this station) 60°F
- Cold Owens Cross Roa…, AL 60°F
- Hot Summerville, GA 60°F
- Near Oceana, VA 60°F
- Near Allatoona Dam, GA 60°F
Climate Living Index · Cary
Cary: 77/100 · grade B
Cary publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Cary, not an official NOAA rating. Rankings still use Comfort Score 80/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 40 calendar days | 93/100 · A |
| Frost-free season | 224 days/year | 79/100 · B |
| Annual temperature balance | 59.7°F · 7.8° from 67.5°F | 75/100 · B |
| Precipitation balance | 48.8 in · 13.8 from 35 in | 52/100 · D |
Cary · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Cary is a temperate Köppen climate: Cfa
Coldest-month mean 40.7°F and warmest-month mean 78.6°F place this station in temperate, no dry season, hot summer climates (Cfa). Class Cfa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, no dry season, hot summer.
- Köppen code
- Cfa
- Group
- Temperate
- Warmest month
- 78.6°F
- Coldest month
- 40.7°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Cary sits across the climate record
Three NOAA fields for Cary's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 26% warmest
- Among 6,861 stations, Cary sits in the warmer third of annual means.
- Annual precipitation
- Top 22% wettest
- Cary's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 73%
- Warmest-to-coldest month gap for Cary is compact versus 6,861 complete station-years.
How Cary compares across U.S. station-mapped locations
Cary's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
80 Top 24% score exceeds 76% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). Below this entry.
- 70–80: 650 station-mapped locations (11%). Below this entry.
- 80–90: 921 station-mapped locations (15%). This entry sits in this band.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 50°F (10°C) | 31°F (0°C) | 41°F (5°C) | 3.5" | 20.1 | 0.0 |
| February | 54°F (12°C) | 33°F (0°C) | 43°F (6°C) | 2.9" | 15.4 | 0.0 |
| March | 61°F (16°C) | 39°F (4°C) | 50°F (10°C) | 4.0" | 9.9 | 0.0 |
| April | 71°F (22°C) | 47°F (8°C) | 59°F (15°C) | 3.7" | 1.2 | 0.4 |
| May | 78°F (26°C) | 56°F (13°C) | 67°F (20°C) | 3.7" | 0.0 | 1.3 |
| June | 85°F (29°C) | 65°F (18°C) | 75°F (24°C) | 4.6" | 0.0 | 7.7 |
| July | 88°F (31°C) | 69°F (21°C) | 79°F (26°C) | 5.3" | 0.0 | 12.6 |
| August | 86°F (30°C) | 68°F (20°C) | 77°F (25°C) | 4.8" | 0.0 | 8.8 |
| September | 80°F (27°C) | 62°F (16°C) | 71°F (22°C) | 5.6" | 0.0 | 1.9 |
| October | 71°F (22°C) | 50°F (10°C) | 60°F (16°C) | 3.5" | 0.4 | 0.2 |
| November | 62°F (16°C) | 39°F (4°C) | 50°F (10°C) | 3.5" | 7.6 | 0.0 |
| December | 53°F (12°C) | 34°F (1°C) | 44°F (7°C) | 3.5" | 16.0 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 89°F around July 9, short of 90°F on every date, while 40 dates carry a normal low at or below freezing, the coldest 31°F near January 20.
The freezing stretch
Freezing normal lows persist into February 11, covering 40 dates.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
The widest day
April 15 carries the biggest normal gap between afternoon and dawn, 25°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Cary.
Monthly Precipitation
Average monthly rainfall
Cary spreads its precipitation across the year
Neither half of the year dominates here: June through August take 30% of the annual total and December through February 20%, with neither reaching the 35% that would mark a distinct wet season. Cary has no dry season to plan around, though it does carry a 37.9°F seasonal spread.
The gap between the wettest and driest month still matters: September averages 5.6" and February 2.9". The three wettest months together take 32% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
Frost Dates & Growing Season
First Fall Freeze
November 10
50% probability date
Last Spring Freeze
March 31
50% probability date
Growing Season
224 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
3,430
Higher = more heating needed
Cooling Degree Days
1,509
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside NC closest to Cary on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (60°F here).
- Centre, AL 60°F · 0.0°F off
- Emporia, VA 60°F · 0.0°F off
- Guthrie, OK 60°F · 0.0°F off
- Los Gatos, CA 60°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (48.8" here), excluding temperature-peer places.
- Allendale, SC 48.8" · 0.0" off
- Portageville, MO 48.8" · 0.0" off
- Belfast, ME 48.8" · 0.0" off
- Sevierville, TN 48.8" · 0.0" off
Data-derived climate profile
How Cary's climate pattern fits together
heating led · wet · mid swing
Cary's energy balance leans toward cold weather: 3,430 annual heating degree days against 1,509 for cooling. Its 37.9°F seasonal range still makes the monthly rows more useful than the annual average alone.
Cary's frost-free season lasts about 224 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
July and January mark the typical warm and cold ends of the calendar in Cary's middle-range seasonal profile. The measured spread is 37.9°F. The annual average is 60°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Alongside its heating load, Cary carries 48.8 inches of precipitation in a normal year, inside PlainClimate's wet range. Snowfall is not added to the interpretation because its annual value is missing. That distinction matters because a wet annual total can arrive as rain, snow, or a mixture at different times.
These labels group NOAA 1991-2020 normals from Cary's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. Treat each band as a descriptive range for Cary, not an official NOAA class or a year-ahead forecast.
Questions about Cary's climate
How much rain does Cary get? ▼
How many days above 90°F does Cary get? ▼
How much energy does heating and cooling require in Cary? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Cary's primary station: CARY (USC00311535). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 3710740). Match rule for Cary: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Cary comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.