Georgetown, Delaware climate: Normal weather by month, frost dates and records
Georgetown's normal year runs from 29°F January nights to 88°F July afternoons, with 43.9 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 14.2°C, January lows of −2°C, July highs of 31°C, 1,115 mm of precipitation a year.
- NOAA stationGeorgetown-Delaware Coastal Airport
- Station IDUSW00013764
- Location38.69°N 75.36°W
- Elevation51 ft (16 m)
- From the center1 miles
- Population8,098
On October 14, the normal high in Georgetown is 70°F and the normal low 50°F, and the chance of measurable rain or snow is 38%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Georgetown.
- Jan 45° 29°
- Feb 48° 30°
- Mar 55° 36°
- Apr 66° 45°
- May 75° 55°
- Jun 83° 64°
- Jul 88° 70°
- Aug 86° 68°
- Sep 80° 61°
- Oct 69° 49°
- Nov 59° 40°
- Dec 50° 33°
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 Georgetown each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 29°F. The most precipitation falls in September (4.54 in), the least in February (2.58 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 45°F | 29°F | 36.9°F | 3.01 | 9 | <1 | 22 | 9 h 40 min |
| February | 48°F | 30°F | 38.9°F | 2.58 | 10 | <1 | 20 | 10 h 40 min |
| March | 55°F | 36°F | 45.8°F | 3.86 | 11 | <1 | 13 | 11 h 50 min |
| April | 66°F | 45°F | 55.8°F | 3.29 | 11 | <1 | 2 | 13 h 10 min |
| May | 75°F | 55°F | 64.5°F | 3.63 | 12 | 2 | <1 | 14 h 20 min |
| June | 83°F | 64°F | 73.6°F | 4.07 | 13 | 6 | <1 | 14 h 50 min |
| July | 88°F | 70°F | 78.6°F | 4.14 | 11 | 12 | <1 | 14 h 40 min |
| August | 86°F | 68°F | 76.7°F | 3.99 | 12 | 8 | <1 | 13 h 40 min |
| September | 80°F | 61°F | 70.3°F | 4.54 | 12 | 2 | <1 | 12 h 30 min |
| October | 69°F | 49°F | 59.3°F | 4.11 | 11 | <1 | 1 | 11 h 20 min |
| November | 59°F | 40°F | 49.2°F | 3.19 | 9 | <1 | 8 | 10 h 10 min |
| December | 50°F | 33°F | 41.3°F | 3.47 | 10 | <1 | 19 | 9 h 30 min |
| Year (annual) | 67°F | 48°F | 57.6°F | 43.88 | 132 | 31 | 83 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 7°C | −2°C | 2.7°C | 76 mm |
| February | 9°C | −1°C | 3.8°C | 66 mm |
| March | 13°C | 2°C | 7.7°C | 98 mm |
| April | 19°C | 7°C | 13.2°C | 84 mm |
| May | 24°C | 13°C | 18.1°C | 92 mm |
| June | 28°C | 18°C | 23.1°C | 103 mm |
| July | 31°C | 21°C | 25.9°C | 105 mm |
| August | 30°C | 20°C | 24.8°C | 101 mm |
| September | 26°C | 16°C | 21.3°C | 115 mm |
| October | 21°C | 10°C | 15.2°C | 104 mm |
| November | 15°C | 4°C | 9.6°C | 81 mm |
| December | 10°C | 0°C | 5.2°C | 88 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Lewes (13 miles away), gets 11 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00013764; 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 Georgetown?
Normal highs sit between 65°F and 85°F in April, May, June, September and October. Of those, April has the fewest days with rain (11).
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 USW00013764.
When is the last frost in Georgetown?
In Georgetown, the last spring frost (32°F) comes after April 4 in half of years and after April 16 in one year in ten; the first autumn frost comes before November 6 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
- April 41 year in 10 after April 16; 9 in 10 after March 22
- First autumn frost, half of years before
- November 61 year in 10 before October 23; 9 in 10 before November 22
NOAA puts the median frost-free season at 217 days, and the season without a hard freeze (28°F) at 244 days.
A hard freeze (28°F) comes after March 23 in half of springs and before November 19 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Georgetown in zone 7b in ZIP code 19947, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Georgetown's NOAA station is in zone 7b: the coldest night of a typical year reaches 8°F (23 complete years).
Frost dates for every NOAA station in Delaware · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00013764; 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 Georgetown?
In a normal year in Georgetown, 31 days a year reach 90°F (1 of them 100°F or more), 83 nights fall to 32°F or colder and 132 days bring measurable precipitation.
- Days at 90°F or more
- 31a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 83a normal year
- Days that stay below freezing
- 9high of 32°F or less
- Days with 0.01 inch of precipitation
- 132a normal year
The highest temperature in Georgetown's official record (kept by the National Weather Service since 1945) is 104°F, on July 23, 2011; the lowest is −13°F, on January 28, 1987.
The wettest calendar year on that record is 1948, with 69.21 in; the snowiest season is 1995–96, with 49.1 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USW00013764; records: ACIS (NOAA Regional Climate Centers), NWS threaded record GEDthr. Records use complete months only; a month missing more than three days is left out.
How sunny is Georgetown?
Over a year 76% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Georgetown, 4.2 kWh per square metre a day. July is the sunniest month (83%) and January the cloudiest (71%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 71% | 2.2 |
| February | 71% | 3.0 |
| March | 71% | 4.0 |
| April | 75% | 5.2 |
| May | 75% | 5.8 |
| June | 80% | 6.3 |
| July | 83% | 6.2 |
| August | 81% | 5.5 |
| September | 77% | 4.5 |
| October | 75% | 3.3 |
| November | 75% | 2.5 |
| December | 71% | 1.9 |
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 Georgetown need?
A normal year in Georgetown brings 4,070 heating degree days, 24% fewer than the median U.S. place (5,373), and 1,396 cooling degree days, 54% more than the median (908). Six months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 4,225 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 871 | 0 |
| February | 731 | 0 |
| March | 600 | 3 |
| April | 301 | 25 |
| May | 107 | 91 |
| June | 10 | 267 |
| July | 0 | 422 |
| August | 0 | 363 |
| September | 24 | 184 |
| October | 214 | 38 |
| November | 478 | 2 |
| December | 735 | 1 |
| Year (annual) | 4,070 | 1,396 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00013764. 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 Georgetown been warmer than normal lately?
2025 averaged 56.6°F, 1.0°F below the 1991-2020 normal of 57.6°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 59.1°F | +1.5°F | 41.48 |
| 2022 | 57.9°F | +0.3°F | 40.59 |
| 2023 | 59.1°F | +1.5°F | 45.67 |
| 2024 | 58.3°F | +0.7°F | 34.99 |
| 2025 | 56.6°F | −1.0°F | 42.96 |
Source: observed years: ACIS, station USW00013764. A year counts only with all twelve months complete.
How does Georgetown's climate compare?
Georgetown is warmer than 4 of the other 5 places with their own NOAA record in Delaware, and wetter than 0. Across the 7,247 U.S. stations with normals, its annual mean of 57.6°F is warmer than 68%.
In the Köppen classification computed from these normals, Georgetown 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 Georgetown share this climate record?
3 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.
- Millsboro, DE7,864 people · 7 mi S
- Milton, DE3,773 people · 7 mi NE
- Bishopville, MD665 people · 19 mi SE
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Georgetown's climate
What is the coldest month in Georgetown?
January, with a normal high of 45°F and a normal low of 29°F. The warmest is July (88°F by day, 70°F at night).
Does it snow in Georgetown?
Yes. NOAA publishes no 1991-2020 snowfall normal for Georgetown's NOAA station; the nearest record that keeps one, Lewes (13 miles away), records 11 inches of snow in a normal year.
What is the rainiest month in Georgetown?
September, with 4.54 in of precipitation in a normal year; the driest is February with 2.58 in.
What plant hardiness zone is Georgetown in?
The USDA's 2023 map puts Georgetown in zone 7b in ZIP code 19947, the nearest ZIP area. By the same method at Georgetown's NOAA station, the coldest night of a typical year reaches 8°F (23 years, 1991-2020): zone 7b.
How late can frost come in Georgetown?
In half of years the last 32°F night comes after April 4; 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
- Delaware climateThe statewide normals and every place in the state
- Lewes, DE12 miles from this station, 58.5°F a year
- Greenwood, DE15 miles from this station, 55.4°F a year
- Salisbury, MD25 miles from this station, 56.9°F a year
- Vienna, MD29 miles from this station, 58.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made