Vandalia, MO 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 Vandalia's primary NOAA station, VANDALIA.
The climate verdict for Vandalia
Vandalia, 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
- annual average temperature (NOAA normal)
- 68/100
- comfort score, above 56% of station-mapped location scores
- 41.3"
- yearly precipitation total
- 195 days
- frost-free growing season
Vandalia: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00238577 · Vandalia, MO 53°F mean · 41.3" 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 #3,705
- PHOTO-FINISH ≈ Winona
- PRCP-MID 41.3"
- SWING-WIDE 49°F
- COMF-MID 68/100
- LOAD-HEAT 5,440 HDD
- STN-1 USC00238577
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Winona, 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.
- Vandalia (this station) 53°F
- Cold Lees Summit Ree…, MO 53°F
- Hot Goblin Valley S…, UT 53°F
- Near Winona, KS 53°F
- Near Sullivan, IL 53°F
Climate Living Index · Vandalia
Vandalia: 62/100 · grade C
Vandalia publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Vandalia, not an official NOAA rating. Rankings still use Comfort Score 68/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 41.3 in · 6.3 from 35 in | 78/100 · B |
| Normal heat + freeze calendar | 122 calendar days | 63/100 · C |
| Frost-free season | 195 days/year | 61/100 · C |
| Annual temperature balance | 53.1°F · 14.4° from 67.5°F | 53/100 · D |
Vandalia · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Vandalia is a continental Köppen climate: Dfa
Coldest-month mean 27.1°F and warmest-month mean 76.4°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
- 76.4°F
- Coldest month
- 27.1°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 Vandalia sits across the climate record
Three NOAA fields for Vandalia's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 54th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- 61st percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- Wider than 79%
- Warmest-to-coldest month gap for Vandalia is large versus 6,861 complete station-years.
How Vandalia compares across U.S. station-mapped locations
Vandalia'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
Vandalia's measured station temperature trend
MethodologyAcross 49 complete annual observations from 1950 to 2025, VANDALIA warmed at a fitted rate of 0.20°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Vandalia primary station fitted change +0.20 °C/decade
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) | 19°F (-7°C) | 27°F (-3°C) | 2.2" | 28.0 | 0.0 |
| February | 41°F (5°C) | 22°F (-5°C) | 32°F (0°C) | 2.3" | 23.6 | 0.0 |
| March | 52°F (11°C) | 31°F (0°C) | 42°F (5°C) | 3.4" | 17.7 | 0.0 |
| April | 64°F (18°C) | 42°F (6°C) | 53°F (12°C) | 4.2" | 4.8 | 0.0 |
| May | 74°F (23°C) | 53°F (12°C) | 63°F (17°C) | 5.0" | 0.0 | 0.4 |
| June | 83°F (28°C) | 63°F (17°C) | 73°F (23°C) | 5.1" | 0.0 | 4.9 |
| July | 86°F (30°C) | 66°F (19°C) | 76°F (25°C) | 4.6" | 0.0 | 9.6 |
| August | 85°F (30°C) | 64°F (18°C) | 75°F (24°C) | 3.4" | 0.0 | 8.5 |
| September | 79°F (26°C) | 56°F (13°C) | 67°F (20°C) | 3.7" | 0.0 | 3.1 |
| October | 67°F (19°C) | 44°F (7°C) | 55°F (13°C) | 2.8" | 3.3 | 0.1 |
| November | 53°F (11°C) | 33°F (0°C) | 43°F (6°C) | 2.7" | 16.0 | 0.0 |
| December | 41°F (5°C) | 24°F (-5°C) | 32°F (0°C) | 2.0" | 25.5 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 87°F around July 14, short of 90°F on every date, while 122 dates carry a normal low at or below freezing, the coldest 18°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 17, covering 122 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 38% of years recorded at least a hundredth of an inch. The driest is January 14 at 21%. Summed across the calendar, that is about 100 wet dates a year.
The widest day
September 24 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 Vandalia.
Monthly Precipitation
Average monthly rainfall
6.4 days with precipitation
6.5 days with precipitation
9.2 days with precipitation
10.2 days with precipitation
11.6 days with precipitation
9.8 days with precipitation
8.1 days with precipitation
7.2 days with precipitation
7.5 days with precipitation
8.7 days with precipitation
6.7 days with precipitation
7.2 days with precipitation
Vandalia spreads its precipitation across the year
Neither half of the year dominates here: June through August take 32% of the annual total and December through February 16%, with neither reaching the 35% that would mark a distinct wet season. Vandalia has no dry season to plan around, though it does carry a wide 49.3°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: June averages 5.1" and December 2.0". The three wettest months together take 35% 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 Vandalia, it arrives in quantity
41.3" of precipitation falls across only about 99 wet days here, averaging 0.42 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 99 a year, 27% of all days
- Average depth per wet day
- 0.42 inches
- Most wet days
- May, about 12
- Fewest wet days
- January, about 6
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.
Frost Dates & Growing Season
First Fall Freeze
October 23
50% probability date
Last Spring Freeze
April 11
50% probability date
Growing Season
195 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,440
Higher = more heating needed
Cooling Degree Days
1,151
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside MO closest to Vandalia 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).
- Allentown, PA 53°F · 0.0°F off
- Dallas, OR 53°F · 0.0°F off
- Danville, IL 53°F · 0.0°F off
- Decatur, IL 53°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (41.3" here), excluding temperature-peer places.
- Colebrook, NH 41.3" · 0.0" off
- Leavenworth, KS 41.3" · 0.0" off
- Whitestown, IN 41.3" · 0.0" off
- Mound City, KS 41.3" · 0.0" off
Data-derived climate profile
How Vandalia's climate pattern fits together
heating led · moderate · mid swing
Vandalia's energy balance leans toward cold weather: 5,440 annual heating degree days against 1,151 for cooling. Its 49.3°F seasonal range still makes the monthly rows more useful than the annual average alone.
Vandalia's frost-free season lasts about 195 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 Vandalia's middle-range seasonal profile. The measured spread is 49.3°F. The annual average is 53°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Vandalia's 41.3 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 Vandalia'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 Vandalia, not an official NOAA class or a year-ahead forecast.
Questions about Vandalia's climate
How much rain does Vandalia get? ▼
How cold does Vandalia get in winter? ▼
How much energy does heating and cooling require in Vandalia? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Vandalia's primary station: VANDALIA (USC00238577). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 2975688). Match rule for Vandalia: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Vandalia 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.