Monroe, North Carolina climate: Normal weather by month, frost dates and records
Monroe's normal year runs from 32°F January nights to 91°F July afternoons, with 37.9 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 16.2°C, January lows of 0°C, July highs of 33°C, 963 mm of precipitation a year.
- NOAA stationMonroe Airport
- Station IDUSW00053872
- Location35.02°N 80.62°W
- Elevation679 ft (207 m)
- Population40,054
On October 23, the normal high in Monroe is 71°F and the normal low 47°F, and the chance of measurable rain or snow is 26%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Monroe.
- Jan 53° 32°
- Feb 57° 35°
- Mar 64° 41°
- Apr 73° 49°
- May 80° 57°
- Jun 87° 65°
- Jul 91° 69°
- Aug 89° 68°
- Sep 83° 62°
- Oct 73° 50°
- Nov 63° 40°
- Dec 55° 34°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Monroe each month?
July is the warmest month, with normal highs of 91°F; January the coldest, with normal lows of 32°F. The most precipitation falls in August (3.79 in), the least in February (2.77 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 53°F | 32°F | 42.4°F | 3.00 | 9 | <1 | 18 | 10 h |
| February | 57°F | 35°F | 45.8°F | 2.77 | 10 | <1 | 12 | 10 h 50 min |
| March | 64°F | 41°F | 52.5°F | 3.19 | 10 | <1 | 6 | 11 h 50 min |
| April | 73°F | 49°F | 61.0°F | 2.90 | 9 | <1 | 1 | 13 h |
| May | 80°F | 57°F | 68.8°F | 2.89 | 10 | 2 | <1 | 14 h |
| June | 87°F | 65°F | 76.3°F | 3.73 | 11 | 11 | <1 | 14 h 30 min |
| July | 91°F | 69°F | 79.7°F | 3.63 | 11 | 17 | <1 | 14 h 20 min |
| August | 89°F | 68°F | 78.2°F | 3.79 | 11 | 14 | <1 | 13 h 30 min |
| September | 83°F | 62°F | 72.4°F | 3.18 | 8 | 5 | <1 | 12 h 30 min |
| October | 73°F | 50°F | 61.7°F | 2.97 | 8 | <1 | 1 | 11 h 20 min |
| November | 63°F | 40°F | 51.3°F | 2.91 | 9 | <1 | 7 | 10 h 20 min |
| December | 55°F | 34°F | 44.8°F | 2.96 | 10 | <1 | 14 | 9 h 50 min |
| Year (annual) | 72°F | 50°F | 61.2°F | 37.92 | 113 | 51 | 57 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 12°C | 0°C | 5.8°C | 76 mm |
| February | 14°C | 2°C | 7.7°C | 70 mm |
| March | 18°C | 5°C | 11.4°C | 81 mm |
| April | 23°C | 9°C | 16.1°C | 74 mm |
| May | 27°C | 14°C | 20.4°C | 73 mm |
| June | 31°C | 19°C | 24.6°C | 95 mm |
| July | 33°C | 20°C | 26.5°C | 92 mm |
| August | 31°C | 20°C | 25.7°C | 96 mm |
| September | 28°C | 17°C | 22.4°C | 81 mm |
| October | 23°C | 10°C | 16.5°C | 75 mm |
| November | 17°C | 4°C | 10.7°C | 74 mm |
| December | 13°C | 1°C | 7.1°C | 75 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. Monroe's own co-op station Monroe (2 mi SE) does: 2 inches of snow in a normal year (see the other stations below).
Source: NOAA NCEI 1991-2020 monthly normals, station USW00053872; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Monroe?
Normal highs sit between 65°F and 85°F in April, May, September and October. Of those, October has the fewest days with rain (8).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00053872.
When is the last frost in Monroe?
In Monroe, the last spring frost (32°F) comes after March 31 in half of years and after April 16 in one year in ten; the first autumn frost comes before November 5 in half of years and before October 23 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- March 311 year in 10 after April 16; 9 in 10 after March 11
- First autumn frost, half of years before
- November 51 year in 10 before October 23; 9 in 10 before November 19
NOAA puts the median frost-free season at 220 days, and the season without a hard freeze (28°F) at 246 days.
A hard freeze (28°F) comes after March 16 in half of springs and before November 16 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Monroe in zone 8a in ZIP code 28110. By the map's own method, the average of each year's coldest night over 1991-2020, Monroe's NOAA station is in zone 8a: the coldest night of a typical year reaches 14°F (21 complete years).
Frost dates for every NOAA station in North Carolina · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00053872; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Monroe?
In a normal year in Monroe, 51 days a year reach 90°F (1 of them 100°F or more), 57 nights fall to 32°F or colder and 113 days bring measurable precipitation.
- Days at 90°F or more
- 51a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 57a normal year
- Days that stay below freezing
- 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 113a normal year
The highest temperature in this station's record (since 1999) is 105°F, on June 29, 2012; the lowest is 7°F, on January 7, 2018.
The wettest calendar year on that record is 2003, with 54.23 in.
Source: NOAA NCEI 1991-2020 annual normals, station USW00053872; records: ACIS (NOAA Regional Climate Centers), station USW00053872. Records use complete months only; a month missing more than three days is left out.
How sunny is Monroe?
Over a year 77% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Monroe, 4.5 kWh per square metre a day. June is the sunniest month (82%) and February the cloudiest (72%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 75% | 2.6 |
| February | 72% | 3.3 |
| March | 73% | 4.4 |
| April | 77% | 5.5 |
| May | 77% | 6.0 |
| June | 82% | 6.5 |
| July | 80% | 6.1 |
| August | 80% | 5.5 |
| September | 78% | 4.7 |
| October | 77% | 3.8 |
| November | 78% | 2.9 |
| December | 73% | 2.3 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Monroe need?
A normal year in Monroe brings 3,061 heating degree days, 43% fewer than the median U.S. place (5,373), and 1,715 cooling degree days, 89% more than the median (908). Five months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 4,989 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 702 | 0 |
| February | 541 | 2 |
| March | 397 | 10 |
| April | 168 | 48 |
| May | 39 | 157 |
| June | 1 | 339 |
| July | 0 | 454 |
| August | 0 | 409 |
| September | 14 | 237 |
| October | 153 | 52 |
| November | 416 | 5 |
| December | 629 | 2 |
| Year (annual) | 3,061 | 1,715 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00053872. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Monroe been warmer than normal lately?
2025 averaged 62.2°F, 1.0°F above the 1991-2020 normal of 61.2°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 62.3°F | +1.1°F | 32.04 |
| 2022 | 62.2°F | +1.0°F | 30.38 |
| 2023 | 62.8°F | +1.6°F | 45.60 |
| 2024 | 63.2°F | +2.0°F | 47.24 |
| 2025 | 62.2°F | +1.0°F | – |
Source: observed years: ACIS, station USW00053872. A year counts only with all twelve months complete.
How does Monroe's climate compare?
Monroe is warmer than 87 of the other 130 places with their own NOAA record in North Carolina, and wetter than 0. Across the 7,247 U.S. stations with normals, its annual mean of 61.2°F is warmer than 78%.
In the Köppen classification computed from these normals, Monroe is Cfa: temperate, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Monroe share this climate record?
19 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Indian Trail, NC43,867 people · 4 mi NW
- Matthews, NC32,048 people · 9 mi NW
- Mint Hill, NC28,825 people · 11 mi N
- Stallings, NC17,617 people · 7 mi N
- Weddington, NC14,391 people · 7 mi W
- Wesley Chapel, NC9,495 people · 4 mi W
- Lancaster, SC9,396 people · 22 mi SW
- Unionville, NC7,258 people · 7 mi NE
- Fairview, NC3,775 people · 11 mi NE
- Lake Park, NC3,582 people · 5 mi N
- Mineral Springs, NC3,456 people · 6 mi SW
- Springdale, SC2,422 people · 24 mi S
- Elgin, SC2,258 people · 25 mi S
- Irwin, SC1,801 people · 25 mi SW
- Hemby Bridge, NC1,750 people · 6 mi N
- Van Wyck, SC1,039 people · 16 mi SW
- Unity, SC655 people · 15 mi S
- Buford, SC283 people · 19 mi S
- Tradesville, SC74 people · 17 mi S
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do Monroe's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Monroe. This page uses Monroe Airport; the other differs by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Monroe (2 mi SE) USC00315771 | 6 mi SE | 550 ft | 60.9°F | 30°F | 91°F | 47.8 | 2 | April 3 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Monroe's climate
What is the coldest month in Monroe?
January, with a normal high of 53°F and a normal low of 32°F. The warmest is July (91°F by day, 69°F at night).
Does it snow in Monroe?
Yes. NOAA publishes no 1991-2020 snowfall normal for Monroe's NOAA station; Monroe's own co-op station Monroe (2 mi SE) records 2 inches of snow in a normal year.
What is the rainiest month in Monroe?
August, with 3.79 in of precipitation in a normal year; the driest is February with 2.77 in.
What plant hardiness zone is Monroe in?
The USDA's 2023 map puts Monroe in zone 8a in ZIP code 28110. By the same method at Monroe's NOAA station, the coldest night of a typical year reaches 14°F (21 years, 1991-2020): zone 8a.
How late can frost come in Monroe?
In half of years the last 32°F night comes after March 31; in one year in ten it comes after April 16. Waiting until April 16 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Monroe in OctoberThis month day by day, its records and recent years
- North Carolina climateThe statewide normals and every place in the state
- Pageland, SC22 miles from this station, 62.5°F a year
- Charlotte, NC24 miles from this station, 61.4°F a year
- Winthrop University, SC24 miles from this station, 62.1°F a year
- Rock Hill, SC25 miles from this station, 61.0°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made