Climate Comfort Score
78/100
Good
NOAA 1991–2020 normals 57°F annual avg Public-domain federal data
ST Louis Lambert, MO Climate
Temperature, precipitation, and comfort score from NOAA NCEI 1991–2020 normals →
- 57°F
- Avg annual temp
- 78/100
- Comfort score
- 41.7"
- Annual precip
- 216d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for ST Louis Lambert
ST Louis Lambert, Missouri averages 57°F a year and scores 78/100 on the comfort index - good, milder than 74% of U.S. cities.
- 57°F
- yearly average temperature, NOAA normal
- 78/100
- comfort score, milder than 74% of U.S. cities
- 41.7"
- annual precipitation · 17" snow
- 216 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
57°F (14°C)
Avg High
67°F
Avg Low
48°F
Annual Precip
41.7"
Annual Snow
16.6"
Comfort Score
78/100
Good
Avg Annual Temperature
57°F
30-year mean (NOAA NCEI)
Annual Precipitation
41.7"
Plus 16.6" of snow
Comfort score vs national 100-point ceiling (ST Louis Lambert) 78.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the ST Louis Lambert area.
How ST Louis Lambert compares to every U.S. city
ST Louis Lambert's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
78 Top 26% higher than 74% 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 ST Louis Lambert
MethodologyZooming out from ST Louis Lambert's own normal, the chart below shows how the U.S. land temperature anomaly has tracked the global mean since 1900 - the most recent decade sits warmer than the 30-year mean shown here.
- 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 | 40°F (5°C) | 24°F (-5°C) | 32°F (0°C) | 2.6" | 5.7" | 24.1 | 0.0 |
| February | 46°F (8°C) | 28°F (-2°C) | 37°F (3°C) | 2.2" | 4.3" | 18.9 | 0.0 |
| March | 57°F (14°C) | 37°F (3°C) | 47°F (8°C) | 3.5" | 2.3" | 10.3 | 0.0 |
| April | 68°F (20°C) | 47°F (8°C) | 58°F (14°C) | 4.7" | 0.2" | 1.4 | 0.3 |
| May | 77°F (25°C) | 58°F (14°C) | 68°F (20°C) | 4.8" | 0.0" | 0.0 | 1.9 |
| June | 86°F (30°C) | 67°F (20°C) | 77°F (25°C) | 4.5" | 0.0" | 0.0 | 10.6 |
| July | 90°F (32°C) | 71°F (22°C) | 80°F (27°C) | 3.9" | 0.0" | 0.0 | 15.9 |
| August | 88°F (31°C) | 69°F (21°C) | 79°F (26°C) | 3.4" | 0.0" | 0.0 | 13.0 |
| September | 81°F (27°C) | 61°F (16°C) | 71°F (22°C) | 3.0" | 0.0" | 0.0 | 5.0 |
| October | 69°F (21°C) | 49°F (10°C) | 59°F (15°C) | 3.1" | 0.0" | 0.6 | 0.4 |
| November | 56°F (13°C) | 37°F (3°C) | 47°F (8°C) | 3.4" | 0.9" | 9.1 | 0.0 |
| December | 45°F (7°C) | 29°F (-2°C) | 37°F (3°C) | 2.5" | 3.2" | 20.4 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 2.6"
Snow: 5.7"
9.3 days with precipitation
February 2.2"
Snow: 4.3"
8.7 days with precipitation
March 3.5"
Snow: 2.3"
10.8 days with precipitation
April 4.7"
Snow: 0.2"
11.5 days with precipitation
May 4.8"
12.6 days with precipitation
June 4.5"
9.8 days with precipitation
July 3.9"
8.9 days with precipitation
August 3.4"
8.4 days with precipitation
September 3.0"
7.3 days with precipitation
October 3.1"
8.5 days with precipitation
November 3.4"
Snow: 0.9"
9.0 days with precipitation
December 2.5"
Snow: 3.2"
9.0 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
November 4
50% probability date
Last Spring Freeze
April 2
50% probability date
Growing Season
216 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,433
Higher = more heating needed
Cooling Degree Days
1,713
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Humidity & Wind
Monthly averages from hourly observations
| Month | Humidity | Wind (mph) | Clear Sky % | Overcast % |
|---|---|---|---|---|
| January | 65% | 9.5 | 17% | 42% |
| February | 62% | 10.4 | 18% | 42% |
| March | 59% | 10.3 | 17% | 36% |
| April | 62% | 9.6 | 14% | 38% |
| May | 64% | 8.4 | 11% | 30% |
| June | 64% | 7.8 | 21% | 19% |
| July | 65% | 7.1 | 17% | 18% |
| August | 66% | 7.0 | 22% | 17% |
| September | 63% | 7.8 | 33% | 18% |
| October | 64% | 8.9 | 23% | 33% |
| November | 66% | 9.6 | 18% | 40% |
| December | 69% | 9.4 | 19% | 45% |
What ST Louis Lambert's climate means for you
ST Louis Lambert runs 57°F a year - peaking in July, coldest in January.
- Gardeners get about 216 frost-free days, with the last spring freeze near April 2 - plan the planting calendar around it, not the regional average.
- Energy bills track 4,433 heating and 1,713 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: ST Louis Lambert, MO
Based on station USW00013994 feeding NOAA's 1991–2020 climate normals, ST Louis Lambert, Missouri averages 57°F a year, ranging from a mean daily high of 67°F to a mean daily low of 48°F. July is typically the warmest month of the year, while January is the coldest. Because these figures are thirty-year averages rather than any single year's readings, they describe the typical month, not a forecast for it.
Anyone planning to live, garden, or travel in ST Louis Lambert should weigh precipitation alongside temperature: the annual average runs 41.7 inches, with 16.6 inches typically falling as snow. The frost-free season averages 216 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 2 and the first fall freeze near November 4. And on the energy front, 4,433 heating degree days and 1,713 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, ST Louis Lambert scores 78/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Shoulder seasons bring the mildest highs and lows in the monthly tables above, summer brings July-driven heat, and winter brings January-driven cold - use that rhythm for planning. These figures are thirty-year averages rather than forecasts, so a specific year may still run warmer, cooler, wetter, or drier than what's shown.
Frequently Asked Questions
What is the average temperature in ST Louis Lambert, MO? ▼
The average annual temperature in ST Louis Lambert, Missouri is 57°F. The warmest month averages 90°F (32°C) and the coldest averages 24°F (-5°C).
How much rain does ST Louis Lambert get? ▼
ST Louis Lambert receives 41.7 inches of precipitation annually, including 16.6 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for ST Louis Lambert? ▼
ST Louis Lambert has a climate comfort score of 78/100 (Good), milder than 74% of U.S. cities in the PlainClimate database.
When is the growing season in ST Louis Lambert? ▼
ST Louis Lambert has approximately 216 frost-free days per year, with the last spring freeze around April 2 and the first fall freeze around November 4.
How much energy does heating and cooling require in ST Louis Lambert? ▼
ST Louis Lambert has 4,433 heating degree days and 1,713 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 ST Louis Lambert climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USW00013994 near ST Louis Lambert.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USW00013994. 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.