Plymouth Wwtp, WI Climate: Temperature & Rain by Month
Average temperature and precipitation from NOAA NCEI 1991–2020 normals →, with a derived climate comfort score
30-year climate normals (1991-2020) from Plymouth Wwtp's primary NOAA station, PLYMOUTH WWTP.
The climate verdict for Plymouth Wwtp
Plymouth Wwtp, Wisconsin has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 46°F. Its climate comfort score of 59/100 (moderate) lands mid-pack nationally, exceeding 37% of station-mapped location scores.
- 46°F
- annual average temperature (NOAA normal)
- 59/100
- comfort score, above 37% of station-mapped location scores
- 33.6"
- annual precipitation · 45" snow
- 160 days
- growing season, frost-free days
Plymouth Wwtp: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00476678 · Plymouth Wwtp, WI 46°F mean · 33.6" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-MID · SWING-WIDE · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 46°F
- RANK-COOL #1,509
- PHOTO-FINISH ≈ Green Bay
- PRCP-MID 33.6"
- SWING-WIDE 52°F
- COMF-MID 59/100
- LOAD-HEAT 7,518 HDD
- STN-1 USC00476678
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Green Bay, WI (+ 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 WI station list.
- Plymouth Wwtp (this station) 46°F
- Hot Echeta, WY 46°F
- Near Green Bay, WI 46°F
- Near Gillette Campbe…, WY 46°F
- Near Richland Ctr, WI 46°F
Climate Living Index · Plymouth Wwtp
Plymouth Wwtp: 42/100 · grade D
Plymouth Wwtp publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Plymouth Wwtp, not an official NOAA rating. Rankings still use Comfort Score 59/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 33.6 in · 1.4 from 35 in | 93/100 · A |
| Normal heat + freeze calendar | 156 calendar days | 42/100 · D |
| Frost-free season | 160 days/year | 33/100 · F |
| Snowfall burden | 44.7 inches/year | 24/100 · F |
| Annual temperature balance | 45.7°F · 21.8° from 67.5°F | 22/100 · F |
Plymouth Wwtp · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Plymouth Wwtp is a continental Köppen climate: Dfb
Coldest-month mean 18.9°F and warmest-month mean 70.6°F place this station in continental, no dry season, warm summer climates (Dfb). Class Dfb is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, no dry season, warm summer.
- Köppen code
- Dfb
- Group
- Continental
- Warmest month
- 70.6°F
- Coldest month
- 18.9°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 Plymouth Wwtp sits across the climate record
Three NOAA fields for Plymouth Wwtp's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 78%
- Among 6,861 stations, Plymouth Wwtp sits in the cooler third of annual means.
- Annual precipitation
- 45th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- Wider than 85%
- Warmest-to-coldest month gap for Plymouth Wwtp is large versus 6,861 complete station-years.
How Plymouth Wwtp compares across U.S. station-mapped locations
Plymouth Wwtp's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
59 37th percentile score exceeds 37% 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%). This entry sits in this band.
- 60–70: 1,236 station-mapped locations (20%). Above this entry.
- 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
Plymouth Wwtp's measured station temperature trend
MethodologyAcross 98 complete annual observations from 1911 to 2025, PLYMOUTH WWTP warmed at a fitted rate of 0.12°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Plymouth Wwtp primary station fitted change +0.12 °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 | 26°F (-3°C) | 12°F (-11°C) | 19°F (-7°C) | 1.6" | 12.4" | 29.9 | 0.0 |
| February | 30°F (-1°C) | 14°F (-10°C) | 22°F (-6°C) | 1.4" | 11.0" | 26.7 | 0.0 |
| March | 41°F (5°C) | 24°F (-5°C) | 32°F (0°C) | 2.0" | 5.9" | 24.9 | 0.0 |
| April | 53°F (12°C) | 34°F (1°C) | 44°F (7°C) | 3.6" | 2.1" | 12.4 | 0.0 |
| May | 66°F (19°C) | 45°F (7°C) | 56°F (13°C) | 3.8" | 0.2" | 1.4 | 0.1 |
| June | 76°F (24°C) | 55°F (13°C) | 65°F (19°C) | 4.2" | 0.0" | 0.0 | 1.5 |
| July | 81°F (27°C) | 60°F (16°C) | 71°F (21°C) | 3.5" | 0.0" | 0.0 | 3.3 |
| August | 79°F (26°C) | 59°F (15°C) | 69°F (20°C) | 3.7" | 0.0" | 0.0 | 1.6 |
| September | 72°F (22°C) | 51°F (10°C) | 61°F (16°C) | 2.8" | 0.0" | 0.2 | 0.4 |
| October | 58°F (15°C) | 39°F (4°C) | 49°F (9°C) | 3.0" | 0.1" | 6.6 | 0.0 |
| November | 44°F (7°C) | 29°F (-2°C) | 36°F (2°C) | 2.1" | 2.3" | 20.2 | 0.0 |
| December | 32°F (0°C) | 18°F (-8°C) | 25°F (-4°C) | 1.8" | 10.7" | 28.2 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 81°F around July 14, short of 90°F on every date, while 156 dates carry a normal low at or below freezing, the coldest 11°F near January 24.
The freezing stretch
The normal low stays at or below 32°F into April 9, then returns to freezing around November 6, covering 156 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 10, when 41% of years recorded at least a hundredth of an inch. The driest is December 26 at 29%. Summed across the calendar, that is about 121 wet dates a year.
The widest day
September 19 carries the biggest normal gap between afternoon and dawn, 22°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Plymouth Wwtp.
Where Plymouth Wwtp Stands Nationally
Days and nights track unusually close together; the widest normal swing, about 22°F, is narrower than most stations record.
Plymouth Wwtp 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: 12.4"
9.3 days with precipitation
Snow: 11.0"
8.5 days with precipitation
Snow: 5.9"
8.9 days with precipitation
Snow: 2.1"
11.0 days with precipitation
Snow: 0.2"
12.9 days with precipitation
11.6 days with precipitation
10.8 days with precipitation
10.2 days with precipitation
9.2 days with precipitation
Snow: 0.1"
10.8 days with precipitation
Snow: 2.3"
9.1 days with precipitation
Snow: 10.7"
8.9 days with precipitation
Plymouth Wwtp spreads its precipitation across the year
Neither half of the year dominates here: June through August take 34% of the annual total and December through February 14%, with neither reaching the 35% that would mark a distinct wet season. Plymouth Wwtp has no dry season to plan around, though it does carry a wide 51.7°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: June averages 4.2" and February 1.4". 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.
How Plymouth Wwtp's precipitation splits across the calendar
About 121 days a year record measurable precipitation here, carrying 33.6" between them, or roughly 0.28 inches on a typical wet day. That sits in the middle band: neither the many-light-days pattern of the Pacific Northwest and the Great Lakes, nor the few-heavy-events pattern of the Gulf and the desert Southwest.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year and say nothing about the heaviest single storm on record.
Winter brings real snow to Plymouth Wwtp
Plymouth Wwtp averages 44.7 inches of snowfall a year, with January the snowiest month on the normals, spread across roughly 27 days that record measurable snow. That is depth accumulating on the ground, which is why it can exceed the annual precipitation figure: precipitation counts the liquid the snow melts down to, and fresh snow is mostly air.
- Annual snowfall: 44.7 inches of depth.
- Days recording measurable snow: about 27 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 13% of the year's precipitation.
NOAA 1991-2020 normals. The ten-to-one ratio is a convention, not a measurement: real ratios vary with temperature, so treat the share as an order of magnitude rather than an exact split.
Frost Dates & Growing Season
First Fall Freeze
October 10
50% probability date
Last Spring Freeze
May 3
50% probability date
Growing Season
160 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,518
Higher = more heating needed
Cooling Degree Days
511
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside WI closest to Plymouth Wwtp 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 (46°F here).
- Alpine, AZ 46°F · 0.0°F off
- Bison, SD 46°F · 0.0°F off
- Brunswick, ME 46°F · 0.0°F off
- Canton, SD 46°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (33.6" here), excluding temperature-peer places.
- New Braunfels, TX 33.6" · 0.0" off
- Manchester, MI 33.6" · 0.0" off
- Mcpherson, KS 33.6" · 0.0" off
- Avon, NY 33.6" · 0.0" off
Snow and freeze rhythm
When cold and snow define Plymouth Wwtp
heating led · moderate · mid swing
Plymouth Wwtp's energy balance leans toward cold weather: 7,518 annual heating degree days against 511 for cooling. Its 51.7°F seasonal range still makes the monthly rows more useful than the annual average alone.
Plymouth Wwtp's frost-free season lasts about 160 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
-
1. Plymouth Wwtp coldest normal
January
Averaging 19°F (-7°C), this month sits below freezing for the month as a whole, not merely overnight.
-
2. Plymouth Wwtp typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Plymouth Wwtp snow peak
January
Plymouth Wwtp averages 44.7 inches of snow a year, with January the snowiest month on the normals.
Questions about Plymouth Wwtp's climate
How much snow does Plymouth Wwtp get? ▼
How cold does Plymouth Wwtp get in winter? ▼
How much energy does heating and cooling require in Plymouth Wwtp? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Plymouth Wwtp's primary station: PLYMOUTH WWTP (USC00476678). 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 Plymouth Wwtp; 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 Plymouth Wwtp 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.