Climate Comfort Score
59/100
Moderate
NOAA 1991–2020 normals 46°F annual avg 2 stations
Hillsboro, WI Climate
Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →
- 46°F
- Avg annual temp
- 59/100
- Comfort score
- 37.3"
- Annual precip
- 152d
- Growing season
30-year climate normals from 2 weather stations (1991-2020).
The climate verdict for Hillsboro
Hillsboro, Wisconsin averages 46°F a year and scores 59/100 on the comfort index - moderate, milder than 39% of U.S. cities.
- 46°F
- annual average temperature (NOAA normal)
- 59/100
- comfort score, milder than 39% of U.S. cities
- 37.3"
- annual precipitation · 39" snow
- 152 days
- frost-free days per growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
46°F (8°C)
Avg High
57°F
Avg Low
35°F
Annual Precip
37.3"
Annual Snow
38.7"
Comfort Score
59/100
Moderate
Avg Annual Temperature
46°F
30-year mean (NOAA NCEI)
Annual Precipitation
37.3"
Plus 38.7" of snow
Comfort score vs national 100-point ceiling (Hillsboro) 59.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Hillsboro area.
How Hillsboro compares to every U.S. city
Hillsboro's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
59 Top 61% higher than 39% 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 Hillsboro
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Hillsboro 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 | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 27°F (-3°C) | 7°F (-14°C) | 17°F (-8°C) | 1.3" | 10.0" | 30.4 | 0.0 |
| February | 32°F (0°C) | 10°F (-12°C) | 21°F (-6°C) | 1.2" | 10.0" | 26.6 | 0.0 |
| March | 44°F (7°C) | 23°F (-5°C) | 33°F (1°C) | 2.0" | 6.4" | 25.8 | 0.0 |
| April | 58°F (14°C) | 34°F (1°C) | 46°F (8°C) | 3.8" | 2.1" | 13.0 | 0.0 |
| May | 69°F (21°C) | 46°F (8°C) | 57°F (14°C) | 5.0" | 0.0" | 2.2 | 0.2 |
| June | 79°F (26°C) | 56°F (13°C) | 67°F (20°C) | 5.1" | 0.0" | 0.0 | 1.1 |
| July | 83°F (28°C) | 60°F (16°C) | 71°F (22°C) | 4.1" | 0.0" | 0.0 | 2.7 |
| August | 81°F (27°C) | 58°F (15°C) | 69°F (21°C) | 4.2" | 0.0" | 0.0 | 1.6 |
| September | 74°F (23°C) | 49°F (9°C) | 61°F (16°C) | 4.0" | 0.0" | 0.9 | 0.2 |
| October | 60°F (16°C) | 37°F (3°C) | 49°F (9°C) | 2.8" | 0.2" | 11.4 | 0.0 |
| November | 46°F (8°C) | 27°F (-3°C) | 36°F (2°C) | 2.1" | 2.6" | 22.5 | 0.0 |
| December | 33°F (0°C) | 15°F (-10°C) | 24°F (-5°C) | 1.6" | 7.4" | 29.7 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 1.3"
Snow: 10.0"
8.8 days with precipitation
February 1.2"
Snow: 10.0"
7.7 days with precipitation
March 2.0"
Snow: 6.4"
9.2 days with precipitation
April 3.8"
Snow: 2.1"
10.8 days with precipitation
May 5.0"
13.8 days with precipitation
June 5.1"
12.4 days with precipitation
July 4.1"
11.0 days with precipitation
August 4.2"
11.2 days with precipitation
September 4.0"
9.9 days with precipitation
October 2.8"
Snow: 0.2"
9.9 days with precipitation
November 2.1"
Snow: 2.6"
8.1 days with precipitation
December 1.6"
Snow: 7.4"
8.9 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 4
50% probability date
Last Spring Freeze
May 5
50% probability date
Growing Season
152 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,454
Higher = more heating needed
Cooling Degree Days
581
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Hillsboro's climate means for you
Hillsboro runs 46°F a year - peaking in July, coldest in January.
- Gardeners get about 152 frost-free days, with the last spring freeze near May 5 - plan the planting calendar around it, not the regional average.
- Energy bills track 7,454 heating and 581 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: Hillsboro, WI
In Hillsboro, Wisconsin, the NOAA 1991–2020 climate normals put the annual average temperature at 46°F, ranging from a mean daily high of 57°F to a mean daily low of 35°F. July is typically the warmest month of the year, while January is the coldest. As thirty-year averages computed from 2 weather stations, these numbers smooth out year-to-year noise into a working baseline for a typical month.
Beyond temperature, Hillsboro averages 37.3 inches of precipitation annually, with 38.7 inches typically falling as snow - a real factor for anyone planning to live, garden, or travel here. The frost-free season averages 152 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 5 and the first fall freeze near October 4. Turning to energy use, 7,454 heating degree days and 581 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Hillsboro scores 59/100 (Moderate), 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 Hillsboro, WI? ▼
The average annual temperature in Hillsboro, Wisconsin is 46°F. The warmest month averages 83°F (28°C) and the coldest averages 7°F (-14°C).
How much rain does Hillsboro get? ▼
Hillsboro receives 37.3 inches of precipitation annually, including 38.7 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Hillsboro? ▼
Hillsboro has a climate comfort score of 59/100 (Moderate), milder than 39% of U.S. cities in the PlainClimate database.
When is the growing season in Hillsboro? ▼
Hillsboro has approximately 152 frost-free days per year, with the last spring freeze around May 5 and the first fall freeze around October 4.
How much energy does heating and cooling require in Hillsboro? ▼
Hillsboro has 7,454 heating degree days and 581 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 Hillsboro climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from 2 weather stations near Hillsboro.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00473654. 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.