Rough Rvr Lake, KY Climate: Temperature & Rain by Month
Annual temperature and rainfall from NOAA NCEI's 1991–2020 normals →; comfort score computed by PlainClimate
30-year climate normals (1991-2020) from Rough Rvr Lake's primary NOAA station, ROUGH RVR LAKE.
The climate verdict for Rough Rvr Lake
Water is the standout signal in Rough Rvr Lake, Kentucky: 51.5 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 57°F. Its climate comfort score of 73/100 (good) lands mid-pack nationally, exceeding 66% of station-mapped location scores.
- 57°F
- annual average temperature (NOAA normal)
- 73/100
- comfort score, above 66% of station-mapped location scores
- 51.5"
- annual precipitation · 4" snow
- 189 days
- frost-free growing season
Rough Rvr Lake: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00156988 · Rough Rvr Lake, KY 57°F mean · 51.5" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-WET · SWING-MID · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-MILD 57°F
- RANK-UPPER #4,528
- PHOTO-FINISH ≈ Wappapello Dam
- PRCP-WET 51.5"
- SWING-MID 44°F
- COMF-MID 73/100
- LOAD-HEAT 4,418 HDD
- STN-1 USC00156988
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Wappapello Dam, MO (+ 0.1 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every KY station list.
- Rough Rvr Lake (this station) 57°F
- Cold Henderson State…, KY 57°F
- Hot Advance, MO 57°F
- Near Wappapello Dam, MO 57°F
- Near Vevay, IN 57°F
Climate Living Index · Rough Rvr Lake
Rough Rvr Lake: 55/100 · grade C
Rough Rvr Lake publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Rough Rvr Lake, not an official NOAA rating. Rankings still use Comfort Score 73/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Snowfall burden | 4.4 inches/year | 72/100 · B |
| Annual temperature balance | 56.7°F · 10.8° from 67.5°F | 65/100 · C |
| Frost-free season | 189 days/year | 56/100 · C |
| Normal heat + freeze calendar | 153 calendar days | 44/100 · D |
| Precipitation balance | 51.5 in · 16.5 from 35 in | 42/100 · D |
Rough Rvr Lake · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Rough Rvr Lake is a temperate Köppen climate: Cfa
Coldest-month mean 34.0°F and warmest-month mean 77.8°F place this station in temperate, no dry season, hot summer climates (Cfa). Class Cfa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, no dry season, hot summer.
- Köppen code
- Cfa
- Group
- Temperate
- Warmest month
- 77.8°F
- Coldest month
- 34.0°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Rough Rvr Lake sits across the climate record
Three NOAA fields for Rough Rvr Lake's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 66th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Top 16% wettest
- Rough Rvr Lake's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- 52nd percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Rough Rvr Lake compares across U.S. station-mapped locations
Rough Rvr Lake's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
73 Top 34% score exceeds 66% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). Below this entry.
- 70–80: 650 station-mapped locations (11%). This entry sits in this band.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Rough Rvr Lake's measured station temperature trend
MethodologyAcross 39 complete annual observations from 1966 to 2023, ROUGH RVR LAKE warmed at a fitted rate of 0.22°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Rough Rvr Lake primary station fitted change +0.22 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 44°F (6°C) | 24°F (-4°C) | 34°F (1°C) | 3.6" | 2.1" | 25.0 | 0.0 |
| February | 49°F (9°C) | 26°F (-3°C) | 37°F (3°C) | 3.9" | 1.4" | 22.4 | 0.0 |
| March | 58°F (15°C) | 34°F (1°C) | 46°F (8°C) | 4.5" | 0.2" | 17.1 | 0.0 |
| April | 70°F (21°C) | 43°F (6°C) | 56°F (14°C) | 5.3" | 0.2" | 6.8 | 0.2 |
| May | 79°F (26°C) | 53°F (12°C) | 66°F (19°C) | 6.0" | 0.0" | 0.8 | 2.2 |
| June | 87°F (30°C) | 62°F (16°C) | 74°F (23°C) | 4.8" | 0.0" | 0.0 | 9.9 |
| July | 90°F (32°C) | 65°F (19°C) | 78°F (25°C) | 4.2" | 0.0" | 0.0 | 17.5 |
| August | 90°F (32°C) | 63°F (17°C) | 77°F (25°C) | 3.2" | 0.0" | 0.0 | 16.3 |
| September | 84°F (29°C) | 56°F (13°C) | 70°F (21°C) | 3.5" | 0.0" | 0.2 | 7.2 |
| October | 72°F (22°C) | 44°F (7°C) | 58°F (15°C) | 4.1" | 0.0" | 5.6 | 0.7 |
| November | 59°F (15°C) | 34°F (1°C) | 47°F (8°C) | 3.8" | 0.1" | 15.8 | 0.0 |
| December | 48°F (9°C) | 28°F (-2°C) | 38°F (3°C) | 4.7" | 0.4" | 22.9 | 0.0 |
The year, day by day
Rough Rvr Lake works both ends of the calendar. Normal highs climb to 90°F by July 28 and hold at or above 90°F on 44 dates, then normal lows drop to freezing or below on 109 dates, bottoming at 24°F around January 23.
When the heat sits
Normal highs reach 90°F from July 6 through August 18, covering 44 dates. The broader mild season, normal highs of 70°F or more, runs April 15 to October 20.
This counts calendar dates whose 1991–2020 normal high reaches 90°F. It is a smaller number than the 90°F+ day counts in the monthly table above, which measure how often the threshold was actually crossed in a typical year. A date can average 88°F and still exceed 90°F in half of all years.
The freezing stretch
The normal low stays at or below 32°F into March 10, then returns to freezing around November 23, covering 109 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
Where the wet dates fall
The likeliest wet date is May 2, when 35% of years recorded at least a hundredth of an inch. The driest is September 15 at 22%. Summed across the calendar, that is about 105 wet dates a year.
The widest day
October 4 carries the biggest normal gap between afternoon and dawn, 28°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Rough Rvr Lake.
Where Rough Rvr Lake Stands Nationally
The normal water year runs well above the national norm at roughly 52 inches.
Rough Rvr Lake earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 2.1"
9.3 days with precipitation
Snow: 1.4"
8.7 days with precipitation
Snow: 0.2"
10.1 days with precipitation
Snow: 0.2"
9.6 days with precipitation
10.8 days with precipitation
9.0 days with precipitation
8.3 days with precipitation
7.0 days with precipitation
6.8 days with precipitation
7.4 days with precipitation
Snow: 0.1"
8.1 days with precipitation
Snow: 0.4"
9.9 days with precipitation
Rough Rvr Lake spreads its precipitation across the year
Neither half of the year dominates here: June through August take 24% of the annual total and December through February 24%, with neither reaching the 35% that would mark a distinct wet season. Rough Rvr Lake has no dry season to plan around, though it does carry a 43.8°F seasonal spread.
The gap between the wettest and driest month still matters: May averages 6.0" and August 3.2". The three wettest months together take 31% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
When it rains in Rough Rvr Lake, it arrives in quantity
51.5" of precipitation falls across only about 105 wet days here, averaging 0.49 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 105 a year, 29% of all days
- Average depth per wet day
- 0.49 inches
- Most wet days
- May, about 11
- Fewest wet days
- September, about 7
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Snow reaches Rough Rvr Lake, but rarely amounts to much
The normals record 4.4 inches of snow a year here, most likely in January. That is a real but marginal amount: enough that snow is part of the local record, not enough to define the winter.
A figure in this range usually reflects a handful of events that melt quickly rather than a season of accumulation; about 6 days a year record any measurable snow at all.
NOAA 1991-2020 normals. An average across thirty years can smooth away a single heavy winter, so a small annual figure does not mean a significant snowfall is impossible.
Frost Dates & Growing Season
First Fall Freeze
October 23
50% probability date
Last Spring Freeze
April 17
50% probability date
Growing Season
189 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,418
Higher = more heating needed
Cooling Degree Days
1,421
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside KY closest to Rough Rvr Lake on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (57°F here).
- Arnett, OK 57°F · 0.0°F off
- Bethpage, TN 57°F · 0.0°F off
- Haysville, KS 57°F · 0.0°F off
- Joplin, MO 57°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (51.5" here), excluding temperature-peer places.
- West Point, NY 51.5" · 0.0" off
- Cross City, FL 51.5" · 0.0" off
- Evening Shade, AR 51.5" · 0.0" off
- Orlando, FL 51.5" · 0.0" off
Data-derived climate profile
How Rough Rvr Lake's climate pattern fits together
heating led · wet · mid swing
Rough Rvr Lake's energy balance leans toward cold weather: 4,418 annual heating degree days against 1,421 for cooling. Its 43.8°F seasonal range still makes the monthly rows more useful than the annual average alone.
Rough Rvr Lake's frost-free season lasts about 189 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
July and January mark the typical warm and cold ends of the calendar in Rough Rvr Lake's middle-range seasonal profile. The measured spread is 43.8°F. The annual average is 57°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Alongside its heating load, Rough Rvr Lake carries 51.5 inches of precipitation in a normal year, inside PlainClimate's wet range. Annual snowfall totals 4.4 inches. That distinction matters because a wet annual total can arrive as rain, snow, or a mixture at different times.
These labels group NOAA 1991-2020 normals from Rough Rvr Lake's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. Treat each band as a descriptive range for Rough Rvr Lake, not an official NOAA class or a year-ahead forecast.
Questions about Rough Rvr Lake's climate
How much rain does Rough Rvr Lake get? ▼
How many days above 90°F does Rough Rvr Lake get? ▼
How much energy does heating and cooling require in Rough Rvr Lake? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Rough Rvr Lake's primary station: ROUGH RVR LAKE (USC00156988). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Rough Rvr Lake; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Rough Rvr Lake comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.