Twin Falls-kmvt, ID 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 Twin Falls-kmvt's primary NOAA station, TWIN FALLS-KMVT.
The climate verdict for Twin Falls-kmvt
Dryness leads the climate profile for Twin Falls-kmvt, Idaho, with 9.2 inches of precipitation a year. NOAA records an annual average of 52°F. At 40/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 6% of scores.
- 52°F
- annual average temperature (NOAA normal)
- 40/100
- comfort score, above 6% of station-mapped location scores
- 9.2"
- annual precipitation
- 162 days
- frost-free growing season
Twin Falls-kmvt: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00109293 · Twin Falls-kmvt, ID 52°F mean · 9.2" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-ARID · SWING-MID · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 52°F
- RANK-MID #3,225
- PHOTO-FINISH ≈ Natrona Lock
- PRCP-ARID 9.2"
- SWING-MID 44°F
- COMF-LOW 40/100
- LOAD-HEAT 5,655 HDD
- STN-1 USC00109293
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Natrona Lock, PA ( -0.1 °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 ID station list.
- Twin Falls-kmvt (this station) 52°F
- Hot Mt Carmel, CT 52°F
- Near Natrona Lock, PA 52°F
- Near Rodale Rsch Ctr, PA 52°F
- Cold Brockton, MA 51°F
Climate Living Index · Twin Falls-kmvt
Twin Falls-kmvt: 31/100 · grade F
Twin Falls-kmvt publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Twin Falls-kmvt, not an official NOAA rating. Rankings still use Comfort Score 40/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Annual temperature balance | 51.6°F · 15.9° from 67.5°F | 47/100 · D |
| Frost-free season | 162 days/year | 35/100 · F |
| Normal heat + freeze calendar | 177 calendar days | 27/100 · F |
| Precipitation balance | 9.2 in · 25.8 from 35 in | 10/100 · F |
Twin Falls-kmvt · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Twin Falls-kmvt's normals sit in a dry climate class: BSk
Precipitation is low relative to temperature but above true desert thresholds: cold semi-arid steppe (BSk). Class BSk is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: dry (arid or semi-arid), specifically cold semi-arid steppe.
- Köppen code
- BSk
- Group
- Dry (arid or semi-arid)
- Warmest month
- 75.2°F
- Coldest month
- 31.1°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 Twin Falls-kmvt sits across the climate record
Three NOAA fields for Twin Falls-kmvt's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 47th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Drier than 95%
- Twin Falls-kmvt's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- 54th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Twin Falls-kmvt compares across U.S. station-mapped locations
Twin Falls-kmvt's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
40 6th percentile score exceeds 6% 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%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). This entry sits in this band.
- 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
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 40°F (5°C) | 22°F (-5°C) | 31°F (0°C) | 1.0" | 27.4 | 0.0 |
| February | 46°F (8°C) | 25°F (-4°C) | 35°F (2°C) | 0.8" | 24.1 | 0.0 |
| March | 56°F (13°C) | 32°F (0°C) | 44°F (7°C) | 0.9" | 19.1 | 0.0 |
| April | 63°F (17°C) | 36°F (2°C) | 49°F (10°C) | 1.0" | 8.8 | 0.1 |
| May | 73°F (23°C) | 45°F (7°C) | 59°F (15°C) | 1.2" | 1.8 | 1.2 |
| June | 81°F (27°C) | 52°F (11°C) | 66°F (19°C) | 0.7" | 0.1 | 5.5 |
| July | 92°F (33°C) | 58°F (15°C) | 75°F (24°C) | 0.2" | 0.0 | 19.0 |
| August | 91°F (33°C) | 56°F (13°C) | 73°F (23°C) | 0.3" | 0.0 | 15.8 |
| September | 80°F (27°C) | 47°F (9°C) | 64°F (18°C) | 0.3" | 0.7 | 3.9 |
| October | 67°F (19°C) | 37°F (3°C) | 52°F (11°C) | 0.7" | 8.9 | 0.3 |
| November | 51°F (10°C) | 28°F (-2°C) | 39°F (4°C) | 0.8" | 22.0 | 0.0 |
| December | 40°F (4°C) | 23°F (-5°C) | 31°F (0°C) | 1.3" | 26.7 | 0.0 |
The year, day by day
Twin Falls-kmvt works both ends of the calendar. Normal highs climb to 95°F by July 27 and hold at or above 90°F on 41 dates, then normal lows drop to freezing or below on 136 dates, bottoming at 22°F around December 21.
When the heat sits
Normal highs reach 90°F from July 9 through August 18, covering 41 dates. The broader mild season, normal highs of 70°F or more, runs May 8 to October 10.
This counts calendar dates whose 1991–2020 normal high reaches 90°F. It is a smaller number than the 90°F+ day counts in the monthly table above, which measure how often the threshold was actually crossed in a typical year. A date can average 88°F and still exceed 90°F in half of all years.
The freezing stretch
The normal low stays at or below 32°F into March 14, then returns to freezing around October 31, covering 136 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 December 7, when 32% of years recorded at least a hundredth of an inch. The driest is July 17 at 7%. Summed across the calendar, that is about 72 wet dates a year.
The widest day
August 2 carries the biggest normal gap between afternoon and dawn, 36°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Twin Falls-kmvt.
Where Twin Falls-kmvt Stands Nationally
Aridity defines the water calendar: about 9 inches in a normal year lands this among the driest tenth of ranked stations.
Daily temperature swings run wider than most of the country, peaking near 36°F between the normal high and low.
Twin Falls-kmvt earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall
8.0 days with precipitation
6.7 days with precipitation
7.4 days with precipitation
7.8 days with precipitation
7.3 days with precipitation
5.5 days with precipitation
1.8 days with precipitation
2.6 days with precipitation
2.8 days with precipitation
4.7 days with precipitation
6.8 days with precipitation
10.0 days with precipitation
Twin Falls-kmvt spreads its precipitation across the year
Neither half of the year dominates here: June through August take 13% of the annual total and December through February 34%, with neither reaching the 35% that would mark a distinct wet season. Twin Falls-kmvt has no dry season to plan around, though it does carry a 44.1°F seasonal spread.
The gap between the wettest and driest month still matters: December averages 1.3" and July 0.2". 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.
Twin Falls-kmvt is dry, and what does fall arrives gently
Only about 71 days a year record measurable precipitation here, 20% of the calendar, and they carry 9.2" between them. At roughly 0.13 inches on an average wet day, this is not the damp drizzle of a marine climate; it is an arid record in which precipitation is both uncommon and light when it appears.
The wettest month by count is December at about 10 wet days; the driest is July at about 2.
A low per-event average in a dry record is a statement about typical days only. Arid regions can still take a large share of a year's total from a single convective storm, which a normal cannot show.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, not the extremes within it.
Frost Dates & Growing Season
First Fall Freeze
October 9
50% probability date
Last Spring Freeze
April 30
50% probability date
Growing Season
162 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,655
Higher = more heating needed
Cooling Degree Days
795
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside ID closest to Twin Falls-kmvt 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 (52°F here).
- Amity, MO 52°F · 0.0°F off
- Carmel, IN 52°F · 0.0°F off
- Eau Claire, MI 52°F · 0.0°F off
- Fairbury, NE 52°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (9.2" here), excluding temperature-peer places.
- Chula Vista, CA 9.2" · 0.0" off
- Battle Mountain, NV 9.2" · 0.0" off
- Circleville, UT 9.2" · 0.0" off
- Glen, MT 9.2" · 0.0" off
Scarce-water calendar
Where Twin Falls-kmvt's limited precipitation lands
heating led · dry · mid swing
Twin Falls-kmvt's energy balance leans toward cold weather: 5,655 annual heating degree days against 795 for cooling. Its 44.1°F seasonal range still makes the monthly rows more useful than the annual average alone.
Twin Falls-kmvt's frost-free season lasts about 162 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
July and December mark the typical warm and cold ends of the calendar in Twin Falls-kmvt's middle-range seasonal profile. The measured spread is 44.1°F. The annual average is 52°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Twin Falls-kmvt's cold-season load does not imply a wet climate. Annual precipitation is 9.2 inches, which places the station in PlainClimate's dry range. Snowfall is not added to the interpretation because its annual value is missing. The snowfall and rainfall fields should be read separately rather than inferred from temperature.
Twin Falls-kmvt wettest normal
December
December concentrates the scarce annual total (9.2 inches).
Twin Falls-kmvt driest normal
July
July is typically driest; arid stations are defined by when water is absent, not by a four-season grid.
Questions about Twin Falls-kmvt's climate
How dry is Twin Falls-kmvt? ▼
How many days above 90°F does Twin Falls-kmvt get? ▼
How much energy does heating and cooling require in Twin Falls-kmvt? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Twin Falls-kmvt's primary station: TWIN FALLS-KMVT (USC00109293). 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 Twin Falls-kmvt; 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 Twin Falls-kmvt 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.