Smithland L&d, IL 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 Smithland L&d's primary NOAA station, SMITHLAND L&D.
The climate verdict for Smithland L&d
Water is the standout signal in Smithland L&d, Illinois: 49.3 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 57°F. It scores 83/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 81% of them.
- 57°F
- average temperature, NOAA 1991-2020 normal
- 83/100
- comfort score, above 81% of station-mapped location scores
- 49.3"
- annual precipitation · 4" snow
- 210 days
- frost-free growing season
Smithland L&d: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00118020 · Smithland L&d, IL 57°F mean · 49.3" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-MID · SWING-MID · COMF-TOP · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-MILD 57°F
- RANK-UPPER #4,597
- PHOTO-FINISH ≈ Marcus Hook
- PRCP-MID 49.3"
- SWING-MID 44°F
- COMF-TOP 83/100
- LOAD-HEAT 4,297 HDD
- STN-1 USC00118020
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Marcus Hook, PA (+ 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 IL station list.
- Smithland L&d (this station) 57°F
- Hot Brookport Dam, IL 57°F
- Near Marcus Hook, PA 57°F
- Near Stevensville, MD 57°F
- Near Laurel, MD 57°F
Climate Living Index · Smithland L&d
Smithland L&d: 69/100 · grade C
Smithland L&d publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Smithland L&d, not an official NOAA rating. Rankings still use Comfort Score 83/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 90 calendar days | 79/100 · B |
| Snowfall burden | 3.8 inches/year | 72/100 · B |
| Frost-free season | 210 days/year | 71/100 · B |
| Annual temperature balance | 57.1°F · 10.4° from 67.5°F | 67/100 · C |
| Precipitation balance | 49.3 in · 14.3 from 35 in | 50/100 · D |
Smithland L&d · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Smithland L&d is a temperate Köppen climate: Cfa
Coldest-month mean 34.2°F and warmest-month mean 78.3°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
- 78.3°F
- Coldest month
- 34.2°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 Smithland L&d sits across the climate record
Three NOAA fields for Smithland L&d's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 67th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Top 21% wettest
- Smithland L&d's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- 54th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Smithland L&d compares across U.S. station-mapped locations
Smithland L&d's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
83 Top 19% score exceeds 81% 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%). Below this entry.
- 80–90: 921 station-mapped locations (15%). This entry sits in this band.
- 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 | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 43°F (6°C) | 26°F (-4°C) | 34°F (1°C) | 3.7" | 0.4" | 23.2 | 0.0 |
| February | 47°F (8°C) | 28°F (-2°C) | 38°F (3°C) | 4.1" | 1.2" | 18.3 | 0.0 |
| March | 57°F (14°C) | 37°F (3°C) | 47°F (8°C) | 4.8" | 0.4" | 11.2 | 0.0 |
| April | 68°F (20°C) | 46°F (8°C) | 57°F (14°C) | 5.1" | 0.0" | 2.3 | 0.0 |
| May | 77°F (25°C) | 56°F (13°C) | 66°F (19°C) | 4.6" | 0.0" | 0.0 | 0.7 |
| June | 85°F (29°C) | 65°F (18°C) | 75°F (24°C) | 4.3" | 0.0" | 0.0 | 7.0 |
| July | 88°F (31°C) | 69°F (20°C) | 78°F (26°C) | 4.3" | 0.0" | 0.0 | 13.4 |
| August | 87°F (31°C) | 67°F (19°C) | 77°F (25°C) | 2.8" | 0.0" | 0.0 | 11.3 |
| September | 81°F (27°C) | 60°F (15°C) | 71°F (21°C) | 3.6" | 0.0" | 0.0 | 4.9 |
| October | 70°F (21°C) | 47°F (8°C) | 59°F (15°C) | 3.6" | 0.0" | 1.6 | 0.2 |
| November | 57°F (14°C) | 37°F (3°C) | 47°F (8°C) | 4.2" | 0.0" | 11.3 | 0.0 |
| December | 46°F (8°C) | 29°F (-1°C) | 38°F (3°C) | 4.3" | 1.8" | 19.5 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 88°F around July 20, short of 90°F on every date, while 90 dates carry a normal low at or below freezing, the coldest 25°F near January 20.
The freezing stretch
The normal low stays at or below 32°F into February 29, then returns to freezing around December 2, covering 90 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 April 30, when 39% of years recorded at least a hundredth of an inch. The driest is August 26 at 21%. Summed across the calendar, that is about 110 wet dates a year.
The widest day
October 13 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 Smithland L&d.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 0.4"
10.0 days with precipitation
Snow: 1.2"
9.3 days with precipitation
Snow: 0.4"
11.4 days with precipitation
10.9 days with precipitation
11.4 days with precipitation
8.8 days with precipitation
8.1 days with precipitation
6.6 days with precipitation
6.5 days with precipitation
7.2 days with precipitation
9.0 days with precipitation
Snow: 1.8"
10.2 days with precipitation
Smithland L&d spreads its precipitation across the year
Neither half of the year dominates here: June through August take 23% of the annual total and December through February 25%, with neither reaching the 35% that would mark a distinct wet season. Smithland L&d has no dry season to plan around, though it does carry a 44.1°F seasonal spread.
The gap between the wettest and driest month still matters: April averages 5.1" and August 2.8". The three wettest months together take 29% 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 Smithland L&d, it arrives in quantity
49.3" of precipitation falls across only about 109 wet days here, averaging 0.45 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 109 a year, 30% of all days
- Average depth per wet day
- 0.45 inches
- Most wet days
- March, 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 Smithland L&d, but rarely amounts to much
The normals record 3.8 inches of snow a year here, most likely in December. 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 3 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 30
50% probability date
Last Spring Freeze
April 3
50% probability date
Growing Season
210 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,297
Higher = more heating needed
Cooling Degree Days
1,465
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside IL closest to Smithland L&d 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).
- Cleveland, GA 57°F · 0.0°F off
- Dover, DE 57°F · 0.0°F off
- Henderson, KY 57°F · 0.0°F off
- Laurel, MD 57°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (49.3" here), excluding temperature-peer places.
- New Madrid, MO 49.3" · 0.0" off
- Atlanta, GA 49.3" · 0.0" off
- Subiaco, AR 49.3" · 0.0" off
- Homerville, GA 49.3" · 0.0" off
Data-derived climate profile
How Smithland L&d's climate pattern fits together
heating led · wet · mid swing
Smithland L&d's energy balance leans toward cold weather: 4,297 annual heating degree days against 1,465 for cooling. Its 44.1°F seasonal range still makes the monthly rows more useful than the annual average alone.
Smithland L&d's frost-free season lasts about 210 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 Smithland L&d's middle-range seasonal profile. The measured spread is 44.1°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, Smithland L&d carries 49.3 inches of precipitation in a normal year, inside PlainClimate's wet range. Annual snowfall totals 3.8 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 Smithland L&d'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 Smithland L&d, not an official NOAA class or a year-ahead forecast.
Questions about Smithland L&d's climate
How much rain does Smithland L&d get? ▼
How many days above 90°F does Smithland L&d get? ▼
How much energy does heating and cooling require in Smithland L&d? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Smithland L&d's primary station: SMITHLAND L&D (USC00118020). 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 Smithland L&d; 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 Smithland L&d 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.