Sines Deep Creek, Maryland climate: Climate normals at a NOAA weather station
Sines Deep Creek's normal year runs from 17°F January nights to 79°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 8.4°C, January lows of −9°C, July highs of 26°C.
- NOAA stationSines Deep Creek
- Station IDUSC00188315
- Location39.52°N 79.41°W
- Elevation2,040 ft (622 m)
On October 23, the normal high in Sines Deep Creek is 58°F and the normal low 37°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Sines Deep Creek.
- Jan 34° 17°
- Feb 38° 18°
- Mar 47° 24°
- Apr 59° 34°
- May 68° 44°
- Jun 75° 52°
- Jul 79° 56°
- Aug 76° 55°
- Sep 72° 48°
- Oct 61° 39°
- Nov 49° 29°
- Dec 38° 21°
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 Sines Deep Creek each month?
July is the warmest month, with normal highs of 79°F; January the coldest, with normal lows of 17°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 34°F | 17°F | 25.3°F | – | <1 | 29 | 9 h 40 min |
| February | 38°F | 18°F | 27.7°F | – | <1 | 25 | 10 h 40 min |
| March | 47°F | 24°F | 35.7°F | – | <1 | 25 | 11 h 50 min |
| April | 59°F | 34°F | 46.5°F | – | <1 | 15 | 13 h 10 min |
| May | 68°F | 44°F | 55.7°F | – | <1 | 4 | 14 h 20 min |
| June | 75°F | 52°F | 63.3°F | – | <1 | 1 | 15 h |
| July | 79°F | 56°F | 67.6°F | – | <1 | <1 | 14 h 40 min |
| August | 76°F | 55°F | 65.7°F | – | <1 | <1 | 13 h 50 min |
| September | 72°F | 48°F | 59.8°F | – | <1 | 1 | 12 h 30 min |
| October | 61°F | 39°F | 49.8°F | – | <1 | 9 | 11 h 10 min |
| November | 49°F | 29°F | 38.8°F | – | <1 | 24 | 10 h |
| December | 38°F | 21°F | 29.6°F | – | <1 | 28 | 9 h 20 min |
| Year (annual) | 58°F | 36°F | 47.1°F | – | <1 | 160 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | 1°C | −9°C | −3.7°C |
| February | 3°C | −8°C | −2.4°C |
| March | 8°C | −4°C | 2.1°C |
| April | 15°C | 1°C | 8.1°C |
| May | 20°C | 6°C | 13.2°C |
| June | 24°C | 11°C | 17.4°C |
| July | 26°C | 13°C | 19.8°C |
| August | 25°C | 13°C | 18.7°C |
| September | 22°C | 9°C | 15.4°C |
| October | 16°C | 4°C | 9.9°C |
| November | 9°C | −2°C | 3.8°C |
| December | 3°C | −6°C | −1.3°C |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Oakland (8 miles away), gets 105 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00188315; 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 Sines Deep Creek?
Normal highs sit between 65°F and 85°F in May, June, July, August and September.
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 USC00188315.
When is the last frost at Sines Deep Creek?
In Sines Deep Creek, the last spring frost (32°F) comes after May 9 in half of years and after May 30 in one year in ten; the first autumn frost comes before October 11 in half of years and before September 27 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
- May 91 year in 10 after May 30; 9 in 10 after April 21
- First autumn frost, half of years before
- October 111 year in 10 before September 27; 9 in 10 before October 24
NOAA puts the median frost-free season at 155 days, and the season without a hard freeze (28°F) at 181 days.
A hard freeze (28°F) comes after April 25 in half of springs and before October 24 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Sines Deep Creek in zone 6a in ZIP code 21541, 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 USC00188315; 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 Sines Deep Creek?
In a normal year in Sines Deep Creek, a 90°F day is rare and 160 nights fall to 32°F or colder.
- Days at 90°F or more
- fewer than 1a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 160a normal year
- Days that stay below freezing
- 35high of 32°F or less
The highest temperature in this station's record (since 1928) is 96°F, on July 28, 1930; the lowest is −23°F, on February 28, 1934.
The wettest calendar year on that record is 1950, with 61.72 in; the snowiest season is 1959–60, with 137.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00188315; records: ACIS (NOAA Regional Climate Centers), station USC00188315. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Sines Deep Creek?
Over a year 68% of the sunlight that would reach the ground under clear skies gets through the clouds at Sines Deep Creek, 3.8 kWh per square metre a day. August is the sunniest month (76%) and December the cloudiest (55%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 55% | 1.7 |
| February | 59% | 2.5 |
| March | 62% | 3.5 |
| April | 66% | 4.7 |
| May | 67% | 5.3 |
| June | 73% | 5.9 |
| July | 75% | 5.8 |
| August | 76% | 5.2 |
| September | 74% | 4.3 |
| October | 67% | 3.0 |
| November | 66% | 2.1 |
| December | 55% | 1.5 |
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 Sines Deep Creek record?
A normal year at Sines Deep Creek brings 6,721 heating degree days, 25% more than the median U.S. place (5,373), and 227 cooling degree days, 75% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,115 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,230 | 0 |
| February | 1,046 | 0 |
| March | 910 | 0 |
| April | 555 | 0 |
| May | 293 | 5 |
| June | 90 | 39 |
| July | 22 | 102 |
| August | 43 | 63 |
| September | 175 | 18 |
| October | 473 | 2 |
| November | 787 | 0 |
| December | 1,097 | 0 |
| Year (annual) | 6,721 | 227 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00188315. 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.
How does Sines Deep Creek's climate compare?
Sines Deep Creek is warmer than 0 of the 26 places with their own NOAA record in Maryland. Across the 7,247 U.S. stations with normals, its annual mean of 47.1°F is warmer than 28%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Which places near Sines Deep Creek 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.
- Kingwood, WV2,953 people · 15 mi W
- Albright, WV246 people · 12 mi W
- Markleysburg, PA238 people · 15 mi N
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 Sines Deep Creek's climate
What is the coldest month at Sines Deep Creek?
January, with a normal high of 34°F and a normal low of 17°F. The warmest is July (79°F by day, 56°F at night).
Does it snow at Sines Deep Creek?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Oakland (8 miles away), records 105 inches of snow in a normal year.
What plant hardiness zone is Sines Deep Creek in?
The USDA's 2023 map puts Sines Deep Creek in zone 6a in ZIP code 21541, the nearest ZIP area.
How late can frost come at Sines Deep Creek?
In half of years the last 32°F night comes after May 9; in one year in ten it comes after May 30. Waiting until May 30 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Maryland climateThe statewide normals and every place in the state
- Oakland, MD7 miles from this station, 49.7°F a year
- Terra Alta, WV9 miles from this station, 47.7°F a year
- Savage River Dam, MD14 miles from this station, 49.8°F a year
- Bayard, WV17 miles from this station, 46.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made