Nampa Sugar Factory, ID Climate: Temperature & Rain by Month
Temperature and precipitation from NOAA NCEI 1991–2020 normals →, plus PlainClimate's derived comfort score
30-year climate normals (1991-2020) from Nampa Sugar Factory's primary NOAA station, NAMPA SUGAR FACTORY.
The climate verdict for Nampa Sugar Factory
Dryness leads the climate profile for Nampa Sugar Factory, Idaho, with 11.0 inches of precipitation a year. NOAA records an annual average of 52°F. At 54/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 31% of scores.
- 52°F
- annual average temperature (NOAA normal)
- 54/100
- comfort score, above 31% of station-mapped location scores
- 11.0"
- annual precipitation · 10" snow
- 167 days
- growing season, frost-free days
Nampa Sugar Factory: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00106305 · Nampa Sugar Factory, ID 52°F mean · 11.0" 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 #3,362
- PHOTO-FINISH ≈ Norwood Mem
- PRCP-ARID 11.0"
- SWING-MID 44°F
- COMF-LOW 54/100
- LOAD-HEAT 5,549 HDD
- STN-1 USC00106305
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Norwood Mem, MA (+ 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 ID station list.
- Nampa Sugar Fac… (this station) 52°F
- Cold Carlisle Wtp, PA 52°F
- Hot Raystown Lake, PA 52°F
- Near Norwood Mem, MA 52°F
- Near Boston, MA 52°F
Climate Living Index · Nampa Sugar Factory
Nampa Sugar Factory: 35/100 · grade F
Nampa Sugar Factory publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Nampa Sugar Factory, not an official NOAA rating. Rankings still use Comfort Score 54/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Snowfall burden | 9.7 inches/year | 64/100 · C |
| Annual temperature balance | 52.0°F · 15.5° from 67.5°F | 49/100 · D |
| Frost-free season | 167 days/year | 39/100 · F |
| Normal heat + freeze calendar | 187 calendar days | 21/100 · F |
| Precipitation balance | 11.0 in · 24.0 from 35 in | 15/100 · F |
Nampa Sugar Factory · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Nampa Sugar Factory'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
- 75.3°F
- Coldest month
- 31.2°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 Nampa Sugar Factory sits across the climate record
Three NOAA fields for Nampa Sugar Factory's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 49th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Drier than 92%
- Nampa Sugar Factory'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 Nampa Sugar Factory compares across U.S. station-mapped locations
Nampa Sugar Factory's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
54 31st percentile score exceeds 31% 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%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). This entry sits in this band.
- 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 | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 40°F (4°C) | 23°F (-5°C) | 31°F (0°C) | 1.4" | 3.4" | 27.7 | 0.0 |
| February | 47°F (8°C) | 26°F (-3°C) | 37°F (3°C) | 1.0" | 1.4" | 22.8 | 0.0 |
| March | 57°F (14°C) | 32°F (0°C) | 45°F (7°C) | 1.3" | 0.2" | 17.3 | 0.0 |
| April | 65°F (18°C) | 36°F (2°C) | 50°F (10°C) | 1.1" | 0.0" | 8.4 | 0.1 |
| May | 74°F (23°C) | 44°F (7°C) | 59°F (15°C) | 1.4" | 0.0" | 1.1 | 1.7 |
| June | 83°F (28°C) | 51°F (11°C) | 67°F (19°C) | 0.7" | 0.0" | 0.0 | 7.6 |
| July | 93°F (34°C) | 57°F (14°C) | 75°F (24°C) | 0.3" | 0.0" | 0.0 | 22.7 |
| August | 92°F (33°C) | 56°F (13°C) | 74°F (23°C) | 0.2" | 0.0" | 0.0 | 20.6 |
| September | 81°F (27°C) | 47°F (8°C) | 64°F (18°C) | 0.4" | 0.0" | 0.2 | 5.7 |
| October | 67°F (19°C) | 37°F (3°C) | 52°F (11°C) | 0.8" | 0.0" | 7.4 | 0.3 |
| November | 51°F (10°C) | 28°F (-2°C) | 40°F (4°C) | 1.2" | 0.5" | 20.6 | 0.0 |
| December | 40°F (4°C) | 23°F (-5°C) | 31°F (0°C) | 1.4" | 4.2" | 26.5 | 0.0 |
The year, day by day
Nampa Sugar Factory works both ends of the calendar. Normal highs climb to 96°F by July 26 and hold at or above 90°F on 48 dates, then normal lows drop to freezing or below on 139 dates, bottoming at 22°F around December 25.
When the heat sits
Normal highs reach 90°F from July 5 through August 21, covering 48 dates. The broader mild season, normal highs of 70°F or more, runs May 4 to October 9.
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 17, then returns to freezing around October 31, covering 139 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 6, when 35% of years recorded at least a hundredth of an inch. The driest is August 9 at 5%. Summed across the calendar, that is about 82 wet dates a year.
The widest day
July 24 carries the biggest normal gap between afternoon and dawn, 37°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Nampa Sugar Factory.
Where Nampa Sugar Factory Stands Nationally
Aridity defines the water calendar: about 11 inches in a normal year lands this among the driest tenth of ranked stations.
Day-to-night contrast is extreme by national standards — the widest normal daily swing reaches about 37°F, sharper than nine in ten ranked stations see.
Nampa Sugar Factory 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: 3.4"
9.6 days with precipitation
Snow: 1.4"
7.0 days with precipitation
Snow: 0.2"
9.0 days with precipitation
9.3 days with precipitation
8.1 days with precipitation
5.6 days with precipitation
2.0 days with precipitation
1.5 days with precipitation
3.0 days with precipitation
5.7 days with precipitation
Snow: 0.5"
10.0 days with precipitation
Snow: 4.2"
11.0 days with precipitation
Nampa Sugar Factory spreads its precipitation across the year
Neither half of the year dominates here: June through August take 11% of the annual total and December through February 35%, with neither reaching the 35% that would mark a distinct wet season. Nampa Sugar Factory 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 1.4" and August 0.2". The three wettest months together take 38% 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.
Nampa Sugar Factory is dry, and what does fall arrives gently
Only about 82 days a year record measurable precipitation here, 22% of the calendar, and they carry 11.0" 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 11 wet days; the driest is August 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.
Snow reaches Nampa Sugar Factory, but rarely amounts to much
The normals record 9.7 inches of snow a year here, most likely in December. That is a real but marginal amount: enough that snow is part of the local record, not enough to define the winter.
A figure in this range usually reflects a handful of events that melt quickly rather than a season of accumulation; about 10 days a year record any measurable snow at all.
NOAA 1991-2020 normals. An average across thirty years can smooth away a single heavy winter, so a small annual figure does not mean a significant snowfall is impossible.
Frost Dates & Growing Season
First Fall Freeze
October 13
50% probability date
Last Spring Freeze
April 29
50% probability date
Growing Season
167 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,549
Higher = more heating needed
Cooling Degree Days
825
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside ID closest to Nampa Sugar Factory 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).
- Arapahoe, CO 52°F · 0.0°F off
- Athens, IL 52°F · 0.0°F off
- Congerville, IL 52°F · 0.0°F off
- Farmington, UT 52°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (11.0" here), excluding temperature-peer places.
- Moro, OR 11.0" · 0.0" off
- Snowflake, AZ 11.0" · 0.0" off
- Porterville, CA 11.0" · 0.0" off
- McNeal, AZ 11.0" · 0.0" off
Scarce-water calendar
Where Nampa Sugar Factory's limited precipitation lands
heating led · dry · mid swing
Nampa Sugar Factory's energy balance leans toward cold weather: 5,549 annual heating degree days against 825 for cooling. Its 44.1°F seasonal range still makes the monthly rows more useful than the annual average alone.
Nampa Sugar Factory's frost-free season lasts about 167 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
July and January mark the typical warm and cold ends of the calendar in Nampa Sugar Factory'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.
Nampa Sugar Factory's cold-season load does not imply a wet climate. Annual precipitation is 11.0 inches, which places the station in PlainClimate's dry range. Annual snowfall totals 9.7 inches. The snowfall and rainfall fields should be read separately rather than inferred from temperature.
Nampa Sugar Factory wettest normal
December
December concentrates the scarce annual total (11.0 inches).
Nampa Sugar Factory driest normal
August
August is typically driest; arid stations are defined by when water is absent, not by a four-season grid.
Questions about Nampa Sugar Factory's climate
How dry is Nampa Sugar Factory? ▼
How many days above 90°F does Nampa Sugar Factory get? ▼
How much energy does heating and cooling require in Nampa Sugar Factory? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Nampa Sugar Factory's primary station: NAMPA SUGAR FACTORY (USC00106305). 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 Nampa Sugar Factory; 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 Nampa Sugar Factory 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.