Millers (4 mi NE), Maryland climate: Climate normals at a NOAA weather station
Millers (4 mi NE)'s normal year runs from 24°F January nights to 85°F July afternoons, with 47.9 inches of precipitation and 34 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 12.0°C, January lows of −5°C, July highs of 29°C, 1,216 mm of precipitation a year.
- NOAA stationMillers (4 mi NE)
- Station IDUSC00185934
- Location39.72°N 76.80°W
- Elevation860 ft (262 m)
On October 23, the normal high in Millers (4 mi NE) is 63°F and the normal low 43°F, and the chance of measurable rain or snow is 32%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Millers (4 mi NE).
- Jan 40° 24°
- Feb 43° 25°
- Mar 52° 32°
- Apr 65° 42°
- May 73° 51°
- Jun 81° 60°
- Jul 85° 64°
- Aug 83° 63°
- Sep 77° 56°
- Oct 65° 45°
- Nov 54° 36°
- Dec 44° 28°
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 Millers (4 mi NE) each month?
July is the warmest month, with normal highs of 85°F; January the coldest, with normal lows of 24°F. The most precipitation falls in September (5.11 in), the least in February (2.94 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 40°F | 24°F | 31.6°F | 3.58 | 9.7 | 12 | <1 | 24 | 9 h 40 min |
| February | 43°F | 25°F | 34.1°F | 2.94 | 10.8 | 11 | <1 | 22 | 10 h 40 min |
| March | 52°F | 32°F | 41.8°F | 4.14 | 6.3 | 12 | <1 | 17 | 11 h 50 min |
| April | 65°F | 42°F | 53.2°F | 3.84 | 0.5 | 13 | <1 | 4 | 13 h 10 min |
| May | 73°F | 51°F | 62.3°F | 3.96 | 0.0 | 14 | <1 | <1 | 14 h 20 min |
| June | 81°F | 60°F | 70.4°F | 3.80 | 0.0 | 12 | 2 | <1 | 15 h |
| July | 85°F | 64°F | 74.6°F | 4.73 | 0.0 | 12 | 6 | <1 | 14 h 40 min |
| August | 83°F | 63°F | 72.9°F | 4.19 | 0.0 | 11 | 3 | <1 | 13 h 50 min |
| September | 77°F | 56°F | 66.5°F | 5.11 | 0.0 | 10 | 1 | <1 | 12 h 30 min |
| October | 65°F | 45°F | 55.4°F | 4.19 | 0.2 | 10 | <1 | 2 | 11 h 10 min |
| November | 54°F | 36°F | 44.9°F | 3.36 | 1.0 | 10 | <1 | 11 | 10 h |
| December | 44°F | 28°F | 36.1°F | 4.04 | 5.6 | 11 | <1 | 21 | 9 h 20 min |
| Year (annual) | 63°F | 44°F | 53.6°F | 47.88 | 34.1 | 137 | 12 | 101 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 4°C | −5°C | −0.2°C | 91 mm | 25 cm |
| February | 6°C | −4°C | 1.2°C | 75 mm | 27 cm |
| March | 11°C | 0°C | 5.4°C | 105 mm | 16 cm |
| April | 18°C | 5°C | 11.8°C | 98 mm | 1 cm |
| May | 23°C | 11°C | 16.8°C | 101 mm | 0 cm |
| June | 27°C | 16°C | 21.3°C | 97 mm | 0 cm |
| July | 29°C | 18°C | 23.7°C | 120 mm | 0 cm |
| August | 28°C | 17°C | 22.7°C | 106 mm | 0 cm |
| September | 25°C | 13°C | 19.2°C | 130 mm | 0 cm |
| October | 19°C | 7°C | 13.0°C | 106 mm | 1 cm |
| November | 12°C | 2°C | 7.2°C | 85 mm | 3 cm |
| December | 7°C | −2°C | 2.3°C | 103 mm | 14 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00185934; 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 Millers (4 mi NE)?
Normal highs sit between 65°F and 85°F in May, June, July, August, September and October. Of those, September has the fewest days with rain (10).
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 USC00185934.
When is the last frost at Millers (4 mi NE)?
In Millers (4 mi NE), the last spring frost (32°F) comes after April 19 in half of years and after May 8 in one year in ten; the first autumn frost comes before October 25 in half of years and before October 8 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 191 year in 10 after May 8; 9 in 10 after April 4
- First autumn frost, half of years before
- October 251 year in 10 before October 8; 9 in 10 before November 7
NOAA puts the median frost-free season at 188 days, and the season without a hard freeze (28°F) at 213 days.
A hard freeze (28°F) comes after April 5 in half of springs and before November 4 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Millers (4 mi NE) in zone 7a in ZIP code 21102, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 7a: the coldest night of a typical year reaches 2°F (30 complete years).
Frost dates for every NOAA station in Maryland · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00185934; 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 at Millers (4 mi NE)?
In a normal year in Millers (4 mi NE), 12 days a year reach 90°F, 101 nights fall to 32°F or colder and 137 days bring measurable precipitation.
- Days at 90°F or more
- 12a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 101a normal year
- Days that stay below freezing
- 18high of 32°F or less
- Days with 0.01 inch of precipitation
- 137a normal year
- Days with 1 inch of snow or more
- 9a normal year
The highest temperature in this station's record (since 1988) is 102°F, on July 22, 2011; the lowest is −13°F, on January 19, 1994.
The wettest calendar year on that record is 2018, with 79.35 in; the snowiest season is 2009–10, with 87.6 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00185934; records: ACIS (NOAA Regional Climate Centers), station USC00185934. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Millers (4 mi NE)?
Over a year 74% of the sunlight that would reach the ground under clear skies gets through the clouds at Millers (4 mi NE), 4.0 kWh per square metre a day. July is the sunniest month (82%) and December the cloudiest (67%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 67% | 2.0 |
| February | 69% | 2.9 |
| March | 68% | 3.8 |
| April | 72% | 5.0 |
| May | 72% | 5.5 |
| June | 78% | 6.2 |
| July | 82% | 6.2 |
| August | 80% | 5.4 |
| September | 76% | 4.3 |
| October | 72% | 3.2 |
| November | 73% | 2.3 |
| December | 67% | 1.8 |
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 Millers (4 mi NE) record?
A normal year at Millers (4 mi NE) brings 5,034 heating degree days, 6% fewer than the median U.S. place (5,373), and 927 cooling degree days, 2% more 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 3,441 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,035 | 0 |
| February | 865 | 0 |
| March | 718 | 1 |
| April | 368 | 13 |
| May | 146 | 61 |
| June | 21 | 183 |
| July | 1 | 300 |
| August | 4 | 247 |
| September | 63 | 108 |
| October | 312 | 15 |
| November | 603 | 0 |
| December | 898 | 0 |
| Year (annual) | 5,034 | 927 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00185934. 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 Millers (4 mi NE) been warmer than normal?
2025 averaged 54.0°F, 0.4°F above the 1991-2020 normal of 53.6°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 55.0°F | +1.4°F | 41.94 | 29.7 |
| 2022 | 53.9°F | +0.3°F | 46.20 | 22.7 |
| 2023 | 55.7°F | +2.1°F | 36.69 | 5.1 |
| 2024 | 56.0°F | +2.4°F | 46.09 | 20.5 |
| 2025 | 54.0°F | +0.4°F | 41.69 | 20.4 |
Over 37 complete years from 1989 to 2025, the station's annual mean temperature rose at a fitted 6.0°F per century (+0.34°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00185934; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Millers (4 mi NE)'s climate compare?
Millers (4 mi NE) is warmer than 5 of the 26 places with their own NOAA record in Maryland, and wetter than 19. Across the 7,247 U.S. stations with normals, its annual mean of 53.6°F is warmer than 55%.
In the Köppen classification computed from these normals, Millers (4 mi NE) is Dfa: continental, 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 Millers (4 mi NE) 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.
- Parkville, PA8,354 people · 10 mi NW
- Red Lion, PA6,552 people · 16 mi NE
- New Freedom, PA5,131 people · 6 mi E
- Dallastown, PA4,211 people · 15 mi NE
- Shrewsbury, PA3,969 people · 7 mi NE
- Spring Grove, PA2,521 people · 12 mi N
- Stewartstown, PA2,222 people · 11 mi E
- Glen Rock, PA2,133 people · 6 mi NE
- Pennville, PA2,102 people · 11 mi NW
- Jacobus, PA1,839 people · 12 mi NE
- Loganville, PA1,443 people · 11 mi NE
- Windsor, PA1,397 people · 18 mi NE
- Abbottstown, PA1,047 people · 15 mi NW
- Jefferson, PA655 people · 7 mi N
- Winterstown, PA610 people · 13 mi NE
- Cross Roads, PA543 people · 14 mi NE
- Felton, PA519 people · 16 mi NE
- Seven Valleys, PA475 people · 10 mi N
- Railroad, PA257 people · 6 mi NE
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 Millers (4 mi NE)'s climate
What is the coldest month at Millers (4 mi NE)?
January, with a normal high of 40°F and a normal low of 24°F. The warmest is July (85°F by day, 64°F at night).
Does it snow at Millers (4 mi NE)?
Yes: 34 inches in a normal year, falling on 18 days with 0.1 inch or more, the most in February (10.8 inches).
What is the rainiest month at Millers (4 mi NE)?
September, with 5.11 in of precipitation in a normal year; the driest is February with 2.94 in.
What plant hardiness zone is Millers (4 mi NE) in?
The USDA's 2023 map puts Millers (4 mi NE) in zone 7a in ZIP code 21102, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches 2°F (30 years, 1991-2020): zone 7a.
How late can frost come at Millers (4 mi NE)?
In half of years the last 32°F night comes after April 19; in one year in ten it comes after May 8. Waiting until May 8 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Maryland climateThe statewide normals and every place in the state
- Hanover, PA12 miles from this station, 52.6°F a year
- York 3 SSW Pump Station, PA14 miles from this station, 54.0°F a year
- York, PA14 miles from this station, 52.4°F a year
- Eisenhower National Historic Site, PA24 miles from this station, 52.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made