Harrison, Nebraska climate: Normal weather by month, frost dates and records
Harrison's normal year runs from 12°F January nights to 85°F July afternoons, with 17.6 inches of precipitation and 57 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.0°C, January lows of −11°C, July highs of 29°C, 446 mm of precipitation a year.
- NOAA stationHarrison
- Station IDUSC00253615
- Location42.69°N 103.88°W
- Elevation4,850 ft (1,478 m)
- Population228
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Harrison.
- Jan 35° 12°
- Feb 37° 13°
- Mar 47° 21°
- Apr 55° 28°
- May 64° 39°
- Jun 76° 49°
- Jul 85° 56°
- Aug 83° 53°
- Sep 74° 43°
- Oct 58° 31°
- Nov 45° 20°
- Dec 35° 13°
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 Harrison each month?
July is the warmest month, with normal highs of 85°F; January the coldest, with normal lows of 12°F. The most precipitation falls in May (3.67 in), the least in January (0.36 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 35°F | 12°F | 23.1°F | 0.36 | 6.2 | 5 | <1 | 31 | 9 h 20 min |
| February | 37°F | 13°F | 24.8°F | 0.49 | 10.0 | 5 | <1 | 27 | 10 h 30 min |
| March | 47°F | 21°F | 33.8°F | 1.01 | 10.9 | 6 | <1 | 28 | 11 h 50 min |
| April | 55°F | 28°F | 41.3°F | 2.22 | 8.1 | 8 | <1 | 20 | 13 h 20 min |
| May | 64°F | 39°F | 51.6°F | 3.67 | 2.7 | 12 | <1 | 7 | 14 h 40 min |
| June | 76°F | 49°F | 62.6°F | 2.86 | 0.0 | 10 | 2 | <1 | 15 h 20 min |
| July | 85°F | 56°F | 70.2°F | 1.94 | 0.0 | 9 | 10 | <1 | 15 h |
| August | 83°F | 53°F | 68.2°F | 1.39 | 0.0 | 7 | 7 | <1 | 14 h |
| September | 74°F | 43°F | 58.3°F | 1.35 | 0.9 | 7 | 2 | 3 | 12 h 30 min |
| October | 58°F | 31°F | 44.4°F | 1.31 | 3.8 | 6 | <1 | 17 | 11 h 10 min |
| November | 45°F | 20°F | 32.5°F | 0.53 | 5.5 | 5 | <1 | 27 | 9 h 50 min |
| December | 35°F | 13°F | 23.9°F | 0.42 | 8.5 | 5 | <1 | 31 | 9 h |
| Year (annual) | 58°F | 31°F | 44.6°F | 17.55 | 56.6 | 85 | 21 | 190 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 2°C | −11°C | −4.9°C | 9 mm | 16 cm |
| February | 3°C | −11°C | −4.0°C | 12 mm | 25 cm |
| March | 8°C | −6°C | 1.0°C | 26 mm | 28 cm |
| April | 13°C | −2°C | 5.2°C | 56 mm | 21 cm |
| May | 18°C | 4°C | 10.9°C | 93 mm | 7 cm |
| June | 25°C | 9°C | 17.0°C | 73 mm | 0 cm |
| July | 29°C | 13°C | 21.2°C | 49 mm | 0 cm |
| August | 29°C | 12°C | 20.1°C | 35 mm | 0 cm |
| September | 23°C | 6°C | 14.6°C | 34 mm | 2 cm |
| October | 15°C | −1°C | 6.9°C | 33 mm | 10 cm |
| November | 7°C | −7°C | 0.3°C | 13 mm | 14 cm |
| December | 2°C | −11°C | −4.5°C | 11 mm | 22 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00253615; 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 Harrison?
Normal highs sit between 65°F and 85°F in June, July, August and September. Of those, August has the fewest days with rain (7).
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 USC00253615.
When is the last frost in Harrison?
In Harrison, the last spring frost (32°F) comes after May 20 in half of years and after June 5 in one year in ten; the first autumn frost comes before September 21 in half of years and before September 4 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 201 year in 10 after June 5; 9 in 10 after May 8
- First autumn frost, half of years before
- September 211 year in 10 before September 4; 9 in 10 before October 5
NOAA puts the median frost-free season at 121 days, and the season without a hard freeze (28°F) at 142 days.
A hard freeze (28°F) comes after May 9 in half of springs and before October 1 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Harrison in zone 5a in ZIP code 69346, the nearest ZIP area.
Frost dates for every NOAA station in Nebraska · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00253615; 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 in Harrison?
In a normal year in Harrison, 21 days a year reach 90°F (1 of them 100°F or more), 190 nights fall to 32°F or colder and 85 days bring measurable precipitation.
- Days at 90°F or more
- 21a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 190a normal year
- Days that stay below freezing
- 48high of 32°F or less
- Days with 0.01 inch of precipitation
- 85a normal year
- Days with 1 inch of snow or more
- 14a normal year
The highest temperature in this station's record (since 1914) is 107°F, on July 27, 1931; the lowest is −39°F, on December 22, 1990.
The wettest calendar year on that record is 1915, with 30.00 in; the snowiest season is 1926–27, with 106.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00253615; records: ACIS (NOAA Regional Climate Centers), station USC00253615. Records use complete months only; a month missing more than three days is left out.
How sunny is Harrison?
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Harrison, 4.5 kWh per square metre a day. July is the sunniest month (87%) and April the cloudiest (73%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 76% | 2.2 |
| February | 74% | 3.0 |
| March | 75% | 4.2 |
| April | 73% | 5.3 |
| May | 74% | 6.1 |
| June | 83% | 7.2 |
| July | 87% | 7.2 |
| August | 87% | 6.2 |
| September | 84% | 5.0 |
| October | 78% | 3.4 |
| November | 78% | 2.4 |
| December | 74% | 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 much heating and cooling does Harrison need?
A normal year in Harrison brings 7,834 heating degree days, 46% more than the median U.S. place (5,373), and 422 cooling degree days, 53% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,107 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,297 | 0 |
| February | 1,127 | 0 |
| March | 966 | 0 |
| April | 710 | 0 |
| May | 421 | 6 |
| June | 130 | 59 |
| July | 23 | 186 |
| August | 42 | 140 |
| September | 231 | 31 |
| October | 639 | 0 |
| November | 977 | 0 |
| December | 1,272 | 0 |
| Year (annual) | 7,834 | 422 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00253615. 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 Harrison's climate compare?
Harrison is warmer than 0 of the other 136 places with their own NOAA record in Nebraska, and wetter than 9. Across the 7,247 U.S. stations with normals, its annual mean of 44.6°F is warmer than 18%.
In the Köppen classification computed from these normals, Harrison is Dwb: continental, dry-winter, warm 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 Harrison share this climate record?
Van Tassell has no NOAA station with 1991-2020 normals of its 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.
- Van Tassell, WY22 people · 11 mi W
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 Harrison's other NOAA stations record?
3 more NOAA stations keep 1991-2020 normals in or near Harrison. This page uses Harrison; the others differ by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Harrison (20 mi SSE) USW00094077 | 20 mi SE | 4,406 ft | 44.8°F | 9°F | 87°F | 15.8 | – | May 27 |
| Harrison (4 mi NW) USC00253617 | 4 mi NW | 5,073 ft | 45.1°F | 14°F | 83°F | – | – | May 17 |
| Harrison (9 mi NE) USC00253618 | 9 mi NE | 4,029 ft | 47.6°F | 16°F | 86°F | 16.3 | 50 | May 12 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Harrison's climate
What is the coldest month in Harrison?
January, with a normal high of 35°F and a normal low of 12°F. The warmest is July (85°F by day, 56°F at night).
Does it snow in Harrison?
Yes: 57 inches in a normal year, falling on 23 days with 0.1 inch or more, the most in March (10.9 inches).
What is the rainiest month in Harrison?
May, with 3.67 in of precipitation in a normal year; the driest is January with 0.36 in.
What plant hardiness zone is Harrison in?
The USDA's 2023 map puts Harrison in zone 5a in ZIP code 69346, the nearest ZIP area.
How late can frost come in Harrison?
In half of years the last 32°F night comes after May 20; in one year in ten it comes after June 5. Waiting until June 5 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Nebraska climateThe statewide normals and every place in the state
- Torrington (29 mi N), WY19 miles from this station, 46.0°F a year
- Agate (3 mi E), NE20 miles from this station, 46.9°F a year
- Fort Robinson, NE22 miles from this station, 48.0°F a year
- Ardmore, SD26 miles from this station, 47.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made