Smithville Lake, MO Climate: Temperature & Rain by Month
Pulled from NOAA NCEI 1991–2020 normals →: climate measurements used in PlainClimate's documented score
30-year climate normals (1991-2020) from Smithville Lake's primary NOAA station, SMITHVILLE LAKE.
The climate verdict for Smithville Lake
Smithville Lake, Missouri has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 53°F. Its climate comfort score of 68/100 (good) lands mid-pack nationally, exceeding 56% of station-mapped location scores.
- 53°F
- average temperature, NOAA 1991-2020 normal
- 68/100
- comfort score, above 56% of station-mapped location scores
- 40.0"
- yearly precipitation total
- 185 days
- frost-free growing season
Smithville Lake: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00237862 · Smithville Lake, MO 53°F mean · 40.0" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-MID · SWING-WIDE · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 53°F
- RANK-MID #3,636
- PHOTO-FINISH ≈ Norton
- PRCP-MID 40.0"
- SWING-WIDE 51°F
- COMF-MID 68/100
- LOAD-HEAT 5,532 HDD
- STN-1 USC00237862
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Norton, KS (+ 0 °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 MO station list.
- Smithville Lake (this station) 53°F
- Hot Scott City, KS 53°F
- Near Norton, KS 53°F
- Near Hannibal Wtr Wks, MO 53°F
- Near Lamar, CO 53°F
Climate Living Index · Smithville Lake
Smithville Lake: 62/100 · grade C
Smithville Lake publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Smithville Lake, not an official NOAA rating. Rankings still use Comfort Score 68/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 40.0 in · 5.0 from 35 in | 82/100 · B |
| Normal heat + freeze calendar | 126 calendar days | 61/100 · C |
| Frost-free season | 185 days/year | 54/100 · D |
| Annual temperature balance | 53.0°F · 14.5° from 67.5°F | 53/100 · D |
Smithville Lake · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Smithville Lake is a continental Köppen climate: Dfa
Coldest-month mean 26.3°F and warmest-month mean 77.1°F place this station in continental, no dry season, hot summer climates (Dfa). Class Dfa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, no dry season, hot summer.
- Köppen code
- Dfa
- Group
- Continental
- Warmest month
- 77.1°F
- Coldest month
- 26.3°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 Smithville Lake sits across the climate record
Three NOAA fields for Smithville Lake's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 53rd percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- 58th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- Wider than 83%
- Warmest-to-coldest month gap for Smithville Lake is large versus 6,861 complete station-years.
How Smithville Lake compares across U.S. station-mapped locations
Smithville Lake's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
68 Top 44% score exceeds 56% 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%). This entry sits in this band.
- 70–80: 650 station-mapped locations (11%). Above this entry.
- 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
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 36°F (2°C) | 16°F (-9°C) | 26°F (-3°C) | 1.1" | 29.0 | 0.0 |
| February | 42°F (5°C) | 21°F (-6°C) | 31°F (0°C) | 1.4" | 23.9 | 0.0 |
| March | 53°F (11°C) | 31°F (0°C) | 42°F (6°C) | 2.3" | 16.4 | 0.0 |
| April | 64°F (18°C) | 41°F (5°C) | 52°F (11°C) | 3.9" | 5.3 | 0.0 |
| May | 73°F (23°C) | 53°F (12°C) | 63°F (17°C) | 5.4" | 0.3 | 0.6 |
| June | 82°F (28°C) | 63°F (17°C) | 73°F (23°C) | 5.3" | 0.0 | 5.1 |
| July | 87°F (30°C) | 68°F (20°C) | 77°F (25°C) | 4.9" | 0.0 | 11.3 |
| August | 85°F (30°C) | 66°F (19°C) | 76°F (24°C) | 4.4" | 0.0 | 9.7 |
| September | 78°F (25°C) | 56°F (13°C) | 67°F (19°C) | 4.3" | 0.0 | 3.1 |
| October | 66°F (19°C) | 44°F (6°C) | 55°F (13°C) | 3.5" | 3.6 | 0.2 |
| November | 53°F (12°C) | 31°F (0°C) | 42°F (6°C) | 2.1" | 15.0 | 0.0 |
| December | 42°F (5°C) | 22°F (-5°C) | 32°F (0°C) | 1.6" | 25.7 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 87°F around July 27, short of 90°F on every date, while 126 dates carry a normal low at or below freezing, the coldest 16°F near January 19.
The freezing stretch
The normal low stays at or below 32°F into March 17, then returns to freezing around November 13, covering 126 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.
The widest day
April 7 carries the biggest normal gap between afternoon and dawn, 23°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Smithville Lake.
Where Smithville Lake Stands Nationally
Days and nights track unusually close together; the widest normal swing, about 23°F, is narrower than most stations record.
Smithville 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
Smithville Lake runs a summer-peaked wet season
36% of Smithville Lake's yearly precipitation falls in June, July and August alone, against the 25% an evenly spread year would give those three months. The wettest month is May at 5.4", on a wide 50.8°F gap between its warmest and coldest month. Warm-season convection and, across the Southwest, the North American monsoon produce this shape: rain arrives in short heavy bursts during the hottest part of the year rather than as long cool-season soaking.
- Wettest three months: May, June, July, taking 39% of the annual total between them.
- Driest month: January at 1.1".
- Winter share: 10% falls in December, January and February.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. A summer-peaked label means the June-August share reaches 35%; it describes timing across an average year, not any single season, and says nothing about how heavy an individual storm can be.
Frost Dates & Growing Season
First Fall Freeze
October 20
50% probability date
Last Spring Freeze
April 18
50% probability date
Growing Season
185 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,532
Higher = more heating needed
Cooling Degree Days
1,194
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside MO closest to Smithville 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 (53°F here).
- Centerport, NY 53°F · 0.0°F off
- Emmitsburg, MD 53°F · 0.0°F off
- Glencoe, KY 53°F · 0.0°F off
- Goldfield, NV 53°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (40.0" here), excluding temperature-peer places.
- Bluffton, IN 40.0" · 0.0" off
- Polo, IL 40.0" · 0.0" off
- Carlinville, IL 40.0" · 0.0" off
- Pulaski, VA 40.0" · 0.0" off
Data-derived climate profile
How Smithville Lake's climate pattern fits together
heating led · moderate · mid swing
Smithville Lake's energy balance leans toward cold weather: 5,532 annual heating degree days against 1,194 for cooling. Its 50.8°F seasonal range still makes the monthly rows more useful than the annual average alone.
Smithville Lake's frost-free season lasts about 185 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 Smithville Lake's middle-range seasonal profile. The measured spread is 50.8°F. The annual average is 53°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Smithville Lake's 40.0 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Snowfall is not added to the interpretation because its annual value is missing. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
These labels group NOAA 1991-2020 normals from Smithville 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 Smithville Lake, not an official NOAA class or a year-ahead forecast.
Questions about Smithville Lake's climate
How much rain does Smithville Lake get? ▼
How many days above 90°F does Smithville Lake get? ▼
How much energy does heating and cooling require in Smithville Lake? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Smithville Lake's primary station: SMITHVILLE LAKE (USC00237862). 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 Smithville 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 Smithville 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.