Anaconda, MT Climate: Temperature & Rain by Month
Explore NOAA NCEI's 1991–2020 climate normals → and a clearly labeled PlainClimate comfort calculation
30-year climate normals (1991-2020) from Anaconda's primary NOAA station, ANACONDA.
The climate verdict for Anaconda
Dryness leads the climate profile for Anaconda, Montana, with 14.9 inches of precipitation a year. NOAA records an annual average of 44°F. At 34/100 (below average) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 2% of scores.
- 44°F
- yearly average temperature, NOAA normal
- 34/100
- comfort score, above 2% of station-mapped location scores
- 14.9"
- annual precipitation · 75" snow
- 105 days
- frost-free growing season
Anaconda: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00240199 · Anaconda, MT 44°F mean · 14.9" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-DRY · SWING-MID · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 44°F
- RANK-COOL #961
- PHOTO-FINISH ≈ Republic
- PRCP-DRY 14.9"
- SWING-MID 41°F
- COMF-LOW 34/100
- LOAD-HEAT 7,879 HDD
- STN-1 USC00240199
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Republic, WA (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every MT station list.
- Anaconda (this station) 44°F
- Hot Virginia City, MT 44°F
- Near Republic, WA 44°F
- Near Idaho City, ID 44°F
- Near Yellowpine, ID 44°F
Anaconda sits in Montana, the #6 coldest U.S. state at 43.4°F statewide annual average - see all 50 coldest states ranked by NOAA normals
Climate Living Index · Anaconda
Anaconda: 14/100 · grade F
Anaconda publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Anaconda, not an official NOAA rating. Rankings still use Comfort Score 34/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 14.9 in · 20.1 from 35 in | 28/100 · F |
| Annual temperature balance | 43.8°F · 23.7° from 67.5°F | 15/100 · F |
| Normal heat + freeze calendar | 205 calendar days | 11/100 · F |
| Snowfall burden | 75.1 inches/year | 8/100 · F |
| Frost-free season | 105 days/year | 0/100 · F |
Anaconda · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Anaconda is a continental Köppen climate: Dfb
Coldest-month mean 24.6°F and warmest-month mean 65.7°F place this station in continental, no dry season, warm summer climates (Dfb). Class Dfb is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, no dry season, warm summer.
- Köppen code
- Dfb
- Group
- Continental
- Warmest month
- 65.7°F
- Coldest month
- 24.6°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Anaconda sits across the climate record
Three NOAA fields for Anaconda's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 86%
- Among 6,861 stations, Anaconda sits in the cooler third of annual means.
- Annual precipitation
- Drier than 83%
- Anaconda's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- 41st percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Anaconda compares across U.S. station-mapped locations
Anaconda's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
34 2nd percentile score exceeds 2% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). This entry sits in this band.
- 40–50: 1,113 station-mapped locations (18%). Above this entry.
- 50–60: 1,329 station-mapped locations (21%). Above this entry.
- 60–70: 1,236 station-mapped locations (20%). Above this entry.
- 70–80: 650 station-mapped locations (11%). Above this entry.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Anaconda's measured station temperature trend
MethodologyAcross 89 complete annual observations from 1907 to 2024, ANACONDA warmed at a fitted rate of 0.08°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Anaconda primary station fitted change +0.08 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 37°F (3°C) | 16°F (-9°C) | 26°F (-3°C) | 0.6" | 11.4" | 30.2 | 0.0 |
| February | 39°F (4°C) | 16°F (-9°C) | 28°F (-2°C) | 1.0" | 11.3" | 27.1 | 0.0 |
| March | 48°F (9°C) | 23°F (-5°C) | 35°F (2°C) | 1.1" | 11.8" | 27.8 | 0.0 |
| April | 55°F (13°C) | 28°F (-2°C) | 42°F (5°C) | 1.5" | 9.9" | 22.7 | 0.0 |
| May | 64°F (18°C) | 36°F (2°C) | 50°F (10°C) | 2.1" | 2.0" | 9.9 | 0.0 |
| June | 73°F (23°C) | 43°F (6°C) | 58°F (14°C) | 2.2" | 0.6" | 1.6 | 0.7 |
| July | 83°F (28°C) | 49°F (9°C) | 66°F (19°C) | 1.3" | 0.0" | 0.1 | 5.6 |
| August | 82°F (28°C) | 47°F (8°C) | 64°F (18°C) | 1.2" | 0.2" | 0.4 | 3.6 |
| September | 72°F (22°C) | 40°F (4°C) | 56°F (13°C) | 1.1" | 0.4" | 4.9 | 0.5 |
| October | 57°F (14°C) | 31°F (-1°C) | 44°F (7°C) | 1.0" | 3.3" | 18.7 | 0.0 |
| November | 43°F (6°C) | 21°F (-6°C) | 32°F (0°C) | 1.0" | 12.1" | 27.1 | 0.0 |
| December | 34°F (1°C) | 15°F (-10°C) | 25°F (-4°C) | 0.7" | 12.1" | 30.3 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 85°F around July 25, short of 90°F on every date, while 205 dates carry a normal low at or below freezing, the coldest 14°F near December 18.
The freezing stretch
The normal low stays at or below 32°F into May 2, then returns to freezing around October 11, covering 205 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
Where the wet dates fall
The likeliest wet date is June 2, when 49% of years recorded at least a hundredth of an inch. The driest is August 8 at 27%. Summed across the calendar, that is about 126 wet dates a year.
The widest day
July 21 carries the biggest normal gap between afternoon and dawn, 35°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Anaconda.
Where Anaconda Stands Nationally
Winters bite deep and often: the normal nightly low dips to freezing or below on around 205 nights a year, placing this among the most frost-prone tenth of ranked stations.
A drier-than-most normal water year — around 15 inches, below what four out of five ranked stations collect.
Anaconda earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 11.4"
9.2 days with precipitation
Snow: 11.3"
8.5 days with precipitation
Snow: 11.8"
11.2 days with precipitation
Snow: 9.9"
12.1 days with precipitation
Snow: 2.0"
13.8 days with precipitation
Snow: 0.6"
13.8 days with precipitation
9.3 days with precipitation
Snow: 0.2"
9.1 days with precipitation
Snow: 0.4"
7.9 days with precipitation
Snow: 3.3"
10.1 days with precipitation
Snow: 12.1"
10.5 days with precipitation
Snow: 12.1"
9.9 days with precipitation
Anaconda spreads its precipitation across the year
Neither half of the year dominates here: June through August take 32% of the annual total and December through February 15%, with neither reaching the 35% that would mark a distinct wet season. Anaconda has no dry season to plan around, though it does carry a 41.1°F seasonal spread.
The gap between the wettest and driest month still matters: June averages 2.2" and January 0.6". The three wettest months together take 39% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
Rain reaches Anaconda in small, frequent amounts
Anaconda records about 125 days with measurable precipitation a year and 14.9" in total, which works out to roughly 0.12 inches on an average wet day. Precipitation on 34% of all days, arriving that lightly, is the damp many-grey-days pattern rather than the storm-driven one.
Places in this band read as wetter than their annual totals suggest, because what people notice is the number of overcast days, not the depth in the gauge.
- Most wet days: May, about 14 of them.
- Fewest: September, about 8.
- Average depth per wet day: 0.12 inches.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year and say nothing about the heaviest single storm on record.
Winter brings real snow to Anaconda
Anaconda averages 75.1 inches of snowfall a year, with November the snowiest month on the normals, spread across roughly 48 days that record measurable snow. That is depth accumulating on the ground, which is why it can exceed the annual precipitation figure: precipitation counts the liquid the snow melts down to, and fresh snow is mostly air.
- Annual snowfall: 75.1 inches of depth.
- Days recording measurable snow: about 48 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 50% of the year's precipitation.
NOAA 1991-2020 normals. The ten-to-one ratio is a convention, not a measurement: real ratios vary with temperature, so treat the share as an order of magnitude rather than an exact split.
Frost Dates & Growing Season
First Fall Freeze
September 14
50% probability date
Last Spring Freeze
June 1
50% probability date
Growing Season
105 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,879
Higher = more heating needed
Cooling Degree Days
177
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside MT closest to Anaconda on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (44°F here).
- Bridgton, ME 44°F · 0.0°F off
- Buffalo, MN 44°F · 0.0°F off
- Hamer, ID 44°F · 0.0°F off
- Idaho City, ID 44°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (14.9" here), excluding temperature-peer places.
- Dillon, CO 14.9" · 0.0" off
- Laketown, UT 14.9" · 0.0" off
- Lamoille, NV 14.9" · 0.0" off
- Trinidad, CO 14.9" · 0.0" off
Snow and freeze rhythm
When cold and snow define Anaconda
heating led · dry · mid swing
Anaconda's energy balance leans toward cold weather: 7,879 annual heating degree days against 177 for cooling. Its 41.1°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 105 days are frost-free in a normal year. That short interval is consistent with the cold-season signal, but the measure does not predict the exact first or last freeze in any one year.
-
1. Anaconda coldest normal
December
Averaging 25°F (-4°C), this month sits below freezing for the month as a whole, not merely overnight.
-
2. Anaconda typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Anaconda snow peak
November
Anaconda averages 75.1 inches of snow a year, with November the snowiest month on the normals.
Questions about Anaconda's climate
How much snow does Anaconda get? ▼
How cold does Anaconda get in winter? ▼
How much energy does heating and cooling require in Anaconda? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Anaconda's primary station: ANACONDA (USC00240199). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Anaconda; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Anaconda comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.