Climate Comfort Score
44/100
Moderate
NOAA 1991–2020 normals 40°F annual avg Public-domain federal data
Del Bonita, MT Climate
Explore average temperature, rainfall, and comfort score sourced from NOAA NCEI's 1991–2020 climate normals →
- 40°F
- Avg annual temp
- 44/100
- Comfort score
- 13.1"
- Annual precip
- 111d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Del Bonita
Del Bonita, Montana averages 40°F a year and scores 44/100 on the comfort index - moderate, milder than 8% of U.S. cities.
- 40°F
- yearly average temperature, NOAA normal
- 44/100
- comfort score, milder than 8% of U.S. cities
- 13.1"
- yearly precipitation total
- 111 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
40°F (5°C)
Avg High
51°F
Avg Low
29°F
Annual Precip
13.1"
Comfort Score
44/100
Moderate
Avg Annual Temperature
40°F
30-year mean (NOAA NCEI)
Annual Precipitation
13.1"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Del Bonita) 44.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Del Bonita area.
How Del Bonita compares to every U.S. city
Del Bonita's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
44 Top 92% higher than 8% 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 Del Bonita
MethodologyZooming out from Del Bonita'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 | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 30°F (-1°C) | 11°F (-12°C) | 20°F (-7°C) | 0.3" | 29.6 | 0.0 |
| February | 31°F (0°C) | 13°F (-11°C) | 22°F (-6°C) | 0.5" | 26.6 | 0.0 |
| March | 39°F (4°C) | 19°F (-7°C) | 29°F (-2°C) | 0.5" | 28.0 | 0.0 |
| April | 50°F (10°C) | 27°F (-3°C) | 39°F (4°C) | 0.9" | 22.3 | 0.0 |
| May | 61°F (16°C) | 36°F (2°C) | 49°F (9°C) | 2.0" | 10.4 | 0.0 |
| June | 67°F (20°C) | 44°F (7°C) | 56°F (13°C) | 3.0" | 0.7 | 0.1 |
| July | 76°F (24°C) | 49°F (9°C) | 62°F (17°C) | 1.5" | 0.1 | 3.2 |
| August | 76°F (24°C) | 47°F (8°C) | 61°F (16°C) | 1.1" | 0.4 | 1.8 |
| September | 67°F (19°C) | 40°F (5°C) | 54°F (12°C) | 1.5" | 4.6 | 0.5 |
| October | 53°F (11°C) | 30°F (-1°C) | 41°F (5°C) | 0.8" | 18.7 | 0.0 |
| November | 37°F (3°C) | 20°F (-7°C) | 28°F (-2°C) | 0.6" | 26.4 | 0.0 |
| December | 30°F (-1°C) | 12°F (-11°C) | 21°F (-6°C) | 0.5" | 29.8 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January 0.3"
4.2 days with precipitation
February 0.5"
4.2 days with precipitation
March 0.5"
4.5 days with precipitation
April 0.9"
6.0 days with precipitation
May 2.0"
7.0 days with precipitation
June 3.0"
8.3 days with precipitation
July 1.5"
6.1 days with precipitation
August 1.1"
5.7 days with precipitation
September 1.5"
5.3 days with precipitation
October 0.8"
4.2 days with precipitation
November 0.6"
4.7 days with precipitation
December 0.5"
5.0 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
September 16
50% probability date
Last Spring Freeze
May 28
50% probability date
Growing Season
111 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
9,137
Higher = more heating needed
Cooling Degree Days
99
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Del Bonita's climate means for you
Del Bonita runs 40°F a year - peaking in July, coldest in January.
- Gardeners get about 111 frost-free days, with the last spring freeze near May 28 - plan the planting calendar around it, not the regional average.
- Energy bills track 9,137 heating and 99 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: Del Bonita, MT
Del Bonita, Montana runs an annual average of 40°F, ranging from a mean daily high of 51°F to a mean daily low of 29°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 USC00242301, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.
Del Bonita averages 13.1 inches of precipitation a year, predominantly as rainfall, and that matters as much to daily life here as temperature does. The frost-free season averages 111 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 28 and the first fall freeze near September 16. As for energy demand, 9,137 heating degree days and 99 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Del Bonita scores 44/100 (Moderate), 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 Del Bonita, MT? ▼
The average annual temperature in Del Bonita, Montana is 40°F. The warmest month averages 76°F (24°C) and the coldest averages 11°F (-12°C).
How much rain does Del Bonita get? ▼
Del Bonita receives 13.1 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Del Bonita? ▼
Del Bonita has a climate comfort score of 44/100 (Moderate), milder than 8% of U.S. cities in the PlainClimate database.
When is the growing season in Del Bonita? ▼
Del Bonita has approximately 111 frost-free days per year, with the last spring freeze around May 28 and the first fall freeze around September 16.
How much energy does heating and cooling require in Del Bonita? ▼
Del Bonita has 9,137 heating degree days and 99 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 Del Bonita climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00242301 near Del Bonita.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00242301. 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.