Climate Comfort Score
68/100
Good
NOAA 1991–2020 normals 48°F annual avg Public-domain federal data
Grafton Wwtp, WI Climate
Pulled from NOAA NCEI 1991–2020 normals →: average temperature, precipitation, and comfort score
- 48°F
- Avg annual temp
- 68/100
- Comfort score
- 35.5"
- Annual precip
- 184d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Grafton Wwtp
Grafton Wwtp, Wisconsin averages 48°F a year and scores 68/100 on the comfort index - good, milder than 58% of U.S. cities.
- 48°F
- yearly average temperature, NOAA normal
- 68/100
- comfort score, milder than 58% of U.S. cities
- 35.5"
- yearly precipitation total
- 184 days
- frost-free growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
48°F (9°C)
Avg High
56°F
Avg Low
39°F
Annual Precip
35.5"
Comfort Score
68/100
Good
Avg Annual Temperature
48°F
30-year mean (NOAA NCEI)
Annual Precipitation
35.5"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Grafton Wwtp) 68.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Grafton Wwtp area.
How Grafton Wwtp compares to every U.S. city
Grafton Wwtp's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
68 Top 42% higher than 58% of 6,915 US cities
Each bar is a band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Warming context for Grafton Wwtp
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Grafton Wwtp captures average conditions across the spread shown, the most recent decade is warmer than the 30-year mean.
- United States land mean (NOAA NCEI) +0.11 °C/decade
- Global anomaly (NASA GISTEMP) +0.11 °C/decade
- Paris Agreement thresholds 1.5°C / 2.0°C
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 30°F (-1°C) | 17°F (-8°C) | 24°F (-5°C) | 1.6" | 29.1 | 0.0 |
| February | 33°F (1°C) | 19°F (-7°C) | 26°F (-3°C) | 1.7" | 26.3 | 0.0 |
| March | 43°F (6°C) | 26°F (-3°C) | 35°F (1°C) | 2.1" | 22.1 | 0.0 |
| April | 54°F (12°C) | 36°F (2°C) | 45°F (7°C) | 3.9" | 8.0 | 0.0 |
| May | 66°F (19°C) | 46°F (8°C) | 56°F (13°C) | 4.0" | 0.4 | 0.1 |
| June | 76°F (24°C) | 56°F (13°C) | 66°F (19°C) | 4.5" | 0.0 | 0.7 |
| July | 81°F (27°C) | 62°F (17°C) | 72°F (22°C) | 3.6" | 0.0 | 2.8 |
| August | 80°F (27°C) | 61°F (16°C) | 70°F (21°C) | 3.8" | 0.0 | 1.5 |
| September | 73°F (23°C) | 54°F (12°C) | 63°F (17°C) | 3.2" | 0.0 | 0.4 |
| October | 61°F (16°C) | 43°F (6°C) | 52°F (11°C) | 3.0" | 4.4 | 0.0 |
| November | 46°F (8°C) | 31°F (0°C) | 39°F (4°C) | 2.1" | 17.2 | 0.0 |
| December | 35°F (2°C) | 21°F (-6°C) | 28°F (-2°C) | 2.0" | 26.5 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January 1.6"
February 1.7"
March 2.1"
April 3.9"
May 4.0"
June 4.5"
July 3.6"
August 3.8"
September 3.2"
October 3.0"
November 2.1"
December 2.0"
Frost Dates & Growing Season
First Fall Freeze
October 24
50% probability date
Last Spring Freeze
April 23
50% probability date
Growing Season
184 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,775
Higher = more heating needed
Cooling Degree Days
564
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Grafton Wwtp's climate means for you
Grafton Wwtp runs 48°F a year - peaking in July, coldest in January.
- Gardeners get about 184 frost-free days, with the last spring freeze near April 23 - plan the planting calendar around it, not the regional average.
- Energy bills track 6,775 heating and 564 cooling degree days a year, higher means the furnace or AC runs more.
- Comparing places to live? Line this city up against nearby cities and the national rankings. See rankings
These are 30-year NOAA normals (1991–2020) - the typical year, not a forecast for any specific season.
Climate Guides
Climate Insight: Grafton Wwtp, WI
Grafton Wwtp, Wisconsin runs an annual average of 48°F, ranging from a mean daily high of 56°F to a mean daily low of 39°F, per NOAA's 1991–2020 climate normals. July is typically the warmest month of the year, while January is the coldest. Drawn from station USC00473198, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.
Rainfall (and snow, where it falls) shapes day-to-day life here as much as temperature does. Grafton Wwtp sees about 35.5 inches of precipitation a year, predominantly as rainfall. The frost-free season averages 184 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 23 and the first fall freeze near October 24. On the energy side, 6,775 heating degree days and 564 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Grafton Wwtp scores 68/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Use the monthly tables above to plan around specific windows, shoulder seasons for mild highs and lows, peak summer for July-driven heat, or deep winter for January-driven cold. All figures here are thirty-year averages: any single year may run warmer, wetter, drier, or cooler than the normal, so treat them as planning guidance rather than forecasts.
Frequently Asked Questions
What is the average temperature in Grafton Wwtp, WI? ▼
The average annual temperature in Grafton Wwtp, Wisconsin is 48°F. The warmest month averages 81°F (27°C) and the coldest averages 17°F (-8°C).
How much rain does Grafton Wwtp get? ▼
Grafton Wwtp receives 35.5 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Grafton Wwtp? ▼
Grafton Wwtp has a climate comfort score of 68/100 (Good), milder than 58% of U.S. cities in the PlainClimate database.
When is the growing season in Grafton Wwtp? ▼
Grafton Wwtp has approximately 184 frost-free days per year, with the last spring freeze around April 23 and the first fall freeze around October 24.
How much energy does heating and cooling require in Grafton Wwtp? ▼
Grafton Wwtp has 6,775 heating degree days and 564 cooling degree days annually, a heating-dominated climate. See our <a href="/guides/reading-weather-data/" class="underline hover:text-brand-600">guide to reading weather data</a> for what these figures mean.
Where does this Grafton Wwtp climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00473198 near Grafton Wwtp.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00473198. For informational purposes only.
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate Editorial
Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. This page draws directly on NOAA 1991-2020 U.S. Climate Normals data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.