St Inigoes Webster NOLF, Maryland climate: Climate normals at a NOAA weather station
St Inigoes Webster NOLF's normal year runs from 30°F January nights to 87°F July afternoons, with 46.3 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 14.7°C, January lows of −1°C, July highs of 31°C, 1,177 mm of precipitation a year.
- NOAA stationSt Inigoes Webster NOLF
- Station IDUSW00003757
- Location38.14°N 76.43°W
- Elevation21 ft (6 m)
On October 22, the normal high in St Inigoes Webster NOLF is 67°F and the normal low 49°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for St Inigoes Webster NOLF.
- Jan 46° 30°
- Feb 48° 31°
- Mar 56° 37°
- Apr 67° 47°
- May 75° 57°
- Jun 85° 66°
- Jul 87° 71°
- Aug 85° 68°
- Sep 79° 62°
- Oct 69° 51°
- Nov 59° 41°
- 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 at St Inigoes Webster NOLF each month?
July is the warmest month, with normal highs of 87°F; January the coldest, with normal lows of 30°F. The most precipitation falls in July (4.85 in), the least in February (2.81 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 46°F | 30°F | 37.8°F | 3.26 | – | <1 | 20 | 9 h 50 min |
| February | 48°F | 31°F | 39.8°F | 2.81 | – | <1 | 17 | 10 h 50 min |
| March | 56°F | 37°F | 46.4°F | 3.90 | – | <1 | 10 | 11 h 50 min |
| April | 67°F | 47°F | 56.9°F | 3.97 | – | <1 | 1 | 13 h 10 min |
| May | 75°F | 57°F | 66.0°F | 3.92 | – | 1 | <1 | 14 h 10 min |
| June | 85°F | 66°F | 75.3°F | 4.04 | – | 7 | <1 | 14 h 50 min |
| July | 87°F | 71°F | 79.2°F | 4.85 | – | 11 | <1 | 14 h 40 min |
| August | 85°F | 68°F | 76.5°F | 4.56 | – | 6 | <1 | 13 h 40 min |
| September | 79°F | 62°F | 70.7°F | 4.34 | – | 4 | <1 | 12 h 30 min |
| October | 69°F | 51°F | 60.1°F | 4.22 | – | <1 | <1 | 11 h 20 min |
| November | 59°F | 41°F | 49.9°F | 3.13 | – | <1 | 5 | 10 h 10 min |
| December | 50°F | 33°F | 41.5°F | 3.32 | – | <1 | 15 | 9 h 30 min |
| Year (annual) | 67°F | 50°F | 58.4°F | 46.32 | – | 29 | 69 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 8°C | −1°C | 3.2°C | 83 mm |
| February | 9°C | 0°C | 4.3°C | 71 mm |
| March | 13°C | 3°C | 8.0°C | 99 mm |
| April | 19°C | 8°C | 13.8°C | 101 mm |
| May | 24°C | 14°C | 18.9°C | 100 mm |
| June | 29°C | 19°C | 24.1°C | 103 mm |
| July | 31°C | 22°C | 26.2°C | 123 mm |
| August | 29°C | 20°C | 24.7°C | 116 mm |
| September | 26°C | 17°C | 21.5°C | 110 mm |
| October | 21°C | 11°C | 15.6°C | 107 mm |
| November | 15°C | 5°C | 9.9°C | 80 mm |
| December | 10°C | 1°C | 5.3°C | 84 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Patuxent River Naval Air Station (11 miles away), gets 13 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00003757; 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.
Which months are mildest at St Inigoes Webster NOLF?
Normal highs sit between 65°F and 85°F in April, May, June, August, September and October.
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 USW00003757.
When is the last frost at St Inigoes Webster NOLF?
In St Inigoes Webster NOLF, the last spring frost (32°F) comes after March 30 in half of years and after April 11 in one year in ten; the first autumn frost comes before November 14 in half of years and before October 29 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 301 year in 10 after April 11; 9 in 10 after March 14
- First autumn frost, half of years before
- November 141 year in 10 before October 29; 9 in 10 before December 1
NOAA puts the median frost-free season at 229 days, and the season without a hard freeze (28°F) at 255 days.
A hard freeze (28°F) comes after March 19 in half of springs and before November 29 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts St Inigoes Webster NOLF in zone 8a in ZIP code 20684, the nearest ZIP area.
Frost dates for every NOAA station in Maryland · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00003757; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. 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 at St Inigoes Webster NOLF?
In a normal year in St Inigoes Webster NOLF, 29 days a year reach 90°F (1 of them 100°F or more) and 69 nights fall to 32°F or colder.
- Days at 90°F or more
- 29a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 69a normal year
- Days that stay below freezing
- 7high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USW00003757.
How sunny is it at St Inigoes Webster NOLF?
Over a year 77% of the sunlight that would reach the ground under clear skies gets through the clouds at St Inigoes Webster NOLF, 4.2 kWh per square metre a day. July is the sunniest month (84%) and January the cloudiest (71%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 71% | 2.2 |
| February | 72% | 3.0 |
| March | 72% | 4.0 |
| April | 75% | 5.2 |
| May | 76% | 5.8 |
| June | 82% | 6.4 |
| July | 84% | 6.3 |
| August | 82% | 5.6 |
| September | 79% | 4.5 |
| October | 76% | 3.4 |
| November | 76% | 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 many heating and cooling degree days does St Inigoes Webster NOLF record?
A normal year at St Inigoes Webster NOLF brings 3,867 heating degree days, 28% fewer than the median U.S. place (5,373), and 1,477 cooling degree days, 63% 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 4,397 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 842 | 0 |
| February | 704 | 0 |
| March | 577 | 2 |
| April | 267 | 24 |
| May | 77 | 107 |
| June | 3 | 312 |
| July | 0 | 440 |
| August | 0 | 357 |
| September | 21 | 190 |
| October | 192 | 42 |
| November | 455 | 3 |
| December | 729 | 0 |
| Year (annual) | 3,867 | 1,477 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00003757. 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.
Have recent years at St Inigoes Webster NOLF been warmer than normal?
2023 averaged 59.6°F, 1.2°F above the 1991-2020 normal of 58.4°F. 2 of the 2 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | 60.7°F | +2.3°F | 40.06 |
| 2023 | 59.6°F | +1.2°F | 32.36 |
Source: observed years: ACIS, station USW00003757. A year counts only with all twelve months complete.
How does St Inigoes Webster NOLF's climate compare?
St Inigoes Webster NOLF is warmer than 24 of the 26 places with their own NOAA record in Maryland, and wetter than 12. Across the 7,247 U.S. stations with normals, its annual mean of 58.4°F is warmer than 70%.
In the Köppen classification computed from these normals, St Inigoes Webster NOLF 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 St Inigoes Webster NOLF share this climate record?
5 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.
- Piney Point, MD1,171 people · 5 mi W
- Tall Timbers, MD532 people · 6 mi W
- Heathsville, VA101 people · 16 mi S
- St. George Island, MD38 people · 3 mi SW
- Lancaster, VA22 people · 26 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.
Questions about St Inigoes Webster NOLF's climate
What is the coldest month at St Inigoes Webster NOLF?
January, with a normal high of 46°F and a normal low of 30°F. The warmest is July (87°F by day, 71°F at night).
Does it snow at St Inigoes Webster NOLF?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Patuxent River Naval Air Station (11 miles away), records 13 inches of snow in a normal year.
What is the rainiest month at St Inigoes Webster NOLF?
July, with 4.85 in of precipitation in a normal year; the driest is February with 2.81 in.
What plant hardiness zone is St Inigoes Webster NOLF in?
The USDA's 2023 map puts St Inigoes Webster NOLF in zone 8a in ZIP code 20684, the nearest ZIP area.
How late can frost come at St Inigoes Webster NOLF?
In half of years the last 32°F night comes after March 30; in one year in ten it comes after April 11. Waiting until April 11 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Maryland climateThe statewide normals and every place in the state
- Patuxent River Naval Air Station, MD11 miles from this station, 58.3°F a year
- Solomons, MD12 miles from this station, 58.9°F a year
- Warsaw, VA22 miles from this station, 58.2°F a year
- Mechanicsville, MD29 miles from this station, 55.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made