Climate Comfort Score
59/100
Moderate
NOAA 1991–2020 normals 53°F annual avg Public-domain federal data
Lacon, IL Climate
Explore average temperature, rainfall, and comfort score sourced from NOAA NCEI's 1991–2020 climate normals →
- 53°F
- Avg annual temp
- 59/100
- Comfort score
- 38.4"
- Annual precip
- 180d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Lacon
Lacon, Illinois averages 53°F a year and scores 59/100 on the comfort index - moderate, milder than 39% of U.S. cities.
- 53°F
- average temperature, NOAA 1991-2020 normal
- 59/100
- comfort score, milder than 39% of U.S. cities
- 38.4"
- annual precipitation · 25" snow
- 180 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
53°F (11°C)
Avg High
63°F
Avg Low
42°F
Annual Precip
38.4"
Annual Snow
24.6"
Comfort Score
59/100
Moderate
Avg Annual Temperature
53°F
30-year mean (NOAA NCEI)
Annual Precipitation
38.4"
Plus 24.6" of snow
Comfort score vs national 100-point ceiling (Lacon) 59.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Lacon area.
How Lacon compares to every U.S. city
Lacon'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 Lacon
MethodologyLacon's NOAA 1991-2020 normal sits inside a longer story: U.S. land temperatures have been tracking (and drifting from) the global mean since 1900, and the chart below shows that spread, with the most recent decade running 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 | 34°F (1°C) | 18°F (-8°C) | 26°F (-3°C) | 2.1" | 8.1" | 27.0 | 0.0 |
| February | 38°F (3°C) | 22°F (-6°C) | 30°F (-1°C) | 2.1" | 6.2" | 23.4 | 0.0 |
| March | 51°F (11°C) | 31°F (0°C) | 41°F (5°C) | 2.6" | 3.2" | 18.6 | 0.0 |
| April | 65°F (18°C) | 41°F (5°C) | 53°F (12°C) | 4.0" | 0.7" | 5.5 | 0.1 |
| May | 75°F (24°C) | 52°F (11°C) | 63°F (17°C) | 4.8" | 0.0" | 0.4 | 0.8 |
| June | 84°F (29°C) | 61°F (16°C) | 73°F (23°C) | 4.3" | 0.0" | 0.0 | 7.2 |
| July | 87°F (31°C) | 65°F (18°C) | 76°F (24°C) | 4.0" | 0.0" | 0.0 | 9.7 |
| August | 86°F (30°C) | 63°F (17°C) | 74°F (24°C) | 3.3" | 0.0" | 0.0 | 7.7 |
| September | 80°F (26°C) | 55°F (13°C) | 67°F (20°C) | 3.3" | 0.0" | 0.2 | 2.9 |
| October | 67°F (19°C) | 44°F (6°C) | 55°F (13°C) | 3.2" | 0.1" | 4.1 | 0.1 |
| November | 51°F (11°C) | 33°F (0°C) | 42°F (5°C) | 2.6" | 1.1" | 15.7 | 0.0 |
| December | 38°F (3°C) | 23°F (-5°C) | 31°F (-1°C) | 2.2" | 5.2" | 25.7 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 2.1"
Snow: 8.1"
9.4 days with precipitation
February 2.1"
Snow: 6.2"
8.0 days with precipitation
March 2.6"
Snow: 3.2"
10.2 days with precipitation
April 4.0"
Snow: 0.7"
11.2 days with precipitation
May 4.8"
12.4 days with precipitation
June 4.3"
9.5 days with precipitation
July 4.0"
9.3 days with precipitation
August 3.3"
8.5 days with precipitation
September 3.3"
7.5 days with precipitation
October 3.2"
Snow: 0.1"
9.6 days with precipitation
November 2.6"
Snow: 1.1"
8.9 days with precipitation
December 2.2"
Snow: 5.2"
9.1 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 17
50% probability date
Last Spring Freeze
April 20
50% probability date
Growing Season
180 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,603
Higher = more heating needed
Cooling Degree Days
1,134
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Lacon's climate means for you
Lacon runs 53°F a year - peaking in July, coldest in January.
- Gardeners get about 180 frost-free days, with the last spring freeze near April 20 - plan the planting calendar around it, not the regional average.
- Energy bills track 5,603 heating and 1,134 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: Lacon, IL
In Lacon, Illinois, the NOAA 1991–2020 climate normals put the annual average temperature at 53°F, ranging from a mean daily high of 63°F to a mean daily low of 42°F. July is typically the warmest month of the year, while January is the coldest. As thirty-year averages computed from station USC00114805, these numbers smooth out year-to-year noise into a working baseline for a typical month.
Anyone planning to live, garden, or travel in Lacon should weigh precipitation alongside temperature: the annual average runs 38.4 inches, with 24.6 inches typically falling as snow. The frost-free season averages 180 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 20 and the first fall freeze near October 17. And on the energy front, 5,603 heating degree days and 1,134 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Lacon 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 Lacon, IL? ▼
The average annual temperature in Lacon, Illinois is 53°F. The warmest month averages 87°F (31°C) and the coldest averages 18°F (-8°C).
How much rain does Lacon get? ▼
Lacon receives 38.4 inches of precipitation annually, including 24.6 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Lacon? ▼
Lacon 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 Lacon? ▼
Lacon has approximately 180 frost-free days per year, with the last spring freeze around April 20 and the first fall freeze around October 17.
How much energy does heating and cooling require in Lacon? ▼
Lacon has 5,603 heating degree days and 1,134 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 Lacon climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00114805 near Lacon.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00114805. 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.