Rochelle (7 mi ENE), Wyoming climate: Climate normals at a NOAA weather station
Rochelle (7 mi ENE)'s normal year runs from 8°F January nights to 90°F July afternoons, with 14.6 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 6.6°C, January lows of −13°C, July highs of 32°C, 371 mm of precipitation a year.
- NOAA stationRochelle (7 mi ENE)
- Station IDUSC00487810
- Location43.65°N 104.84°W
- Elevation4,239 ft (1,292 m)
On October 23, the normal high in Rochelle (7 mi ENE) is 58°F and the normal low 23°F, and the chance of measurable rain or snow is 14%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Rochelle (7 mi ENE).
- Jan 34° 8°
- Feb 37° 10°
- Mar 47° 18°
- Apr 57° 26°
- May 66° 37°
- Jun 78° 46°
- Jul 90° 53°
- Aug 88° 50°
- Sep 77° 39°
- Oct 62° 27°
- Nov 46° 16°
- Dec 35° 9°
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 Rochelle (7 mi ENE) each month?
July is the warmest month, with normal highs of 90°F; January the coldest, with normal lows of 8°F. The most precipitation falls in July (2.52 in), the least in December (0.30 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 34°F | 8°F | 21.1°F | 0.32 | 4 | <1 | 31 | 9 h 20 min |
| February | 37°F | 10°F | 23.5°F | 0.45 | 5 | <1 | 28 | 10 h 30 min |
| March | 47°F | 18°F | 32.5°F | 0.77 | 5 | <1 | 29 | 11 h 50 min |
| April | 57°F | 26°F | 41.8°F | 2.03 | 8 | <1 | 22 | 13 h 20 min |
| May | 66°F | 37°F | 51.2°F | 2.46 | 9 | <1 | 7 | 14 h 40 min |
| June | 78°F | 46°F | 61.9°F | 2.43 | 9 | 3 | 1 | 15 h 20 min |
| July | 90°F | 53°F | 71.3°F | 2.52 | 7 | 13 | <1 | 15 h 10 min |
| August | 88°F | 50°F | 68.9°F | 0.99 | 5 | 14 | <1 | 14 h |
| September | 77°F | 39°F | 58.1°F | 0.76 | 4 | 4 | 6 | 12 h 30 min |
| October | 62°F | 27°F | 44.2°F | 1.14 | 5 | <1 | 22 | 11 h 10 min |
| November | 46°F | 16°F | 30.9°F | 0.44 | 4 | <1 | 29 | 9 h 40 min |
| December | 35°F | 9°F | 21.7°F | 0.30 | 4 | <1 | 31 | 9 h |
| Year (annual) | 60°F | 28°F | 43.9°F | 14.61 | 68 | 35 | 204 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 1°C | −13°C | −6.1°C | 8 mm |
| February | 3°C | −12°C | −4.7°C | 11 mm |
| March | 9°C | −8°C | 0.3°C | 20 mm |
| April | 14°C | −3°C | 5.4°C | 52 mm |
| May | 19°C | 3°C | 10.7°C | 62 mm |
| June | 26°C | 8°C | 16.6°C | 62 mm |
| July | 32°C | 12°C | 21.8°C | 64 mm |
| August | 31°C | 10°C | 20.5°C | 25 mm |
| September | 25°C | 4°C | 14.5°C | 19 mm |
| October | 17°C | −3°C | 6.8°C | 29 mm |
| November | 8°C | −9°C | −0.6°C | 11 mm |
| December | 1°C | −13°C | −5.7°C | 8 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Dull Center (1 mi SE) (17 miles away), gets 47 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00487810; 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 Rochelle (7 mi ENE)?
Normal highs sit between 65°F and 85°F in May, June and September. Of those, September has the fewest days with rain (4).
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 USC00487810.
When is the last frost at Rochelle (7 mi ENE)?
In Rochelle (7 mi ENE), the last spring frost (32°F) comes after May 25 in half of years and after June 11 in one year in ten; the first autumn frost comes before September 14 in half of years and before August 31 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 251 year in 10 after June 11; 9 in 10 after May 11
- First autumn frost, half of years before
- September 141 year in 10 before August 31; 9 in 10 before September 27
NOAA puts the median frost-free season at 110 days, and the season without a hard freeze (28°F) at 131 days.
A hard freeze (28°F) comes after May 13 in half of springs and before September 24 in half of autumns.
Frost dates for every NOAA station in Wyoming · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00487810. 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 Rochelle (7 mi ENE)?
In a normal year in Rochelle (7 mi ENE), 35 days a year reach 90°F (4 of them 100°F or more), 204 nights fall to 32°F or colder and 68 days bring measurable precipitation.
- Days at 90°F or more
- 35a normal year
- Days at 100°F or more
- 4a normal year
- Nights at 32°F or colder
- 204a normal year
- Days that stay below freezing
- 44high of 32°F or less
- Days with 0.01 inch of precipitation
- 68a normal year
The highest temperature in this station's record (since 1928) is 107°F, on July 6, 1981; the lowest is −47°F, on December 22, 1989.
The wettest calendar year on that record is 1998, with 21.89 in; the snowiest season is 1983–84, with 61.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00487810; records: ACIS (NOAA Regional Climate Centers), station USC00487810. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Rochelle (7 mi ENE)?
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds at Rochelle (7 mi ENE), 4.4 kWh per square metre a day. July is the sunniest month (88%) and December the cloudiest (71%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 74% | 2.0 |
| February | 73% | 2.9 |
| March | 73% | 4.1 |
| April | 73% | 5.2 |
| May | 75% | 6.2 |
| June | 83% | 7.2 |
| July | 88% | 7.3 |
| August | 87% | 6.3 |
| September | 84% | 4.9 |
| October | 76% | 3.3 |
| November | 76% | 2.3 |
| December | 71% | 1.7 |
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 Rochelle (7 mi ENE) record?
A normal year at Rochelle (7 mi ENE) brings 8,082 heating degree days, 50% more than the median U.S. place (5,373), and 434 cooling degree days, 52% 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 2,063 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,359 | 0 |
| February | 1,162 | 0 |
| March | 1,006 | 0 |
| April | 698 | 0 |
| May | 429 | 1 |
| June | 136 | 43 |
| July | 15 | 211 |
| August | 34 | 153 |
| September | 231 | 24 |
| October | 647 | 0 |
| November | 1,023 | 0 |
| December | 1,342 | 0 |
| Year (annual) | 8,082 | 434 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00487810. 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 Rochelle (7 mi ENE) been warmer than normal?
2025 averaged 46.2°F, 2.3°F above the 1991-2020 normal of 43.9°F. 3 of the 3 complete years since 2023 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2023 | 45.4°F | +1.5°F | 17.62 |
| 2024 | 47.4°F | +3.5°F | 7.49 |
| 2025 | 46.2°F | +2.3°F | 14.82 |
Over 45 complete years from 1953 to 2025, the station's annual mean temperature rose at a fitted 3.8°F per century (+0.21°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00487810; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Rochelle (7 mi ENE)'s climate compare?
Rochelle (7 mi ENE) is warmer than 32 of the 71 places with their own NOAA record in Wyoming, and wetter than 42. Across the 7,247 U.S. stations with normals, its annual mean of 43.9°F is warmer than 15%.
In the Köppen classification computed from these normals, Rochelle (7 mi ENE) is BSk: cold semi-arid steppe. 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.
Questions about Rochelle (7 mi ENE)'s climate
What is the coldest month at Rochelle (7 mi ENE)?
January, with a normal high of 34°F and a normal low of 8°F. The warmest is July (90°F by day, 53°F at night).
Does it snow at Rochelle (7 mi ENE)?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Dull Center (1 mi SE) (17 miles away), records 47 inches of snow in a normal year.
What is the rainiest month at Rochelle (7 mi ENE)?
July, with 2.52 in of precipitation in a normal year; the driest is December with 0.30 in.
How late can frost come at Rochelle (7 mi ENE)?
In half of years the last 32°F night comes after May 25; in one year in ten it comes after June 11. Waiting until June 11 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Wyoming climateThe statewide normals and every place in the state
- Dull Center (1 mi SE), WY17 miles from this station, 47.6°F a year
- Upton, WY33 miles from this station, 44.8°F a year
- Lance Creek (11 mi NNE), WY34 miles from this station, 46.5°F a year
- Dillinger, WY34 miles from this station, 45.0°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made