Cambridge, Idaho climate: Normal weather by month, frost dates and records
Cambridge's normal year runs from 17°F January nights to 93°F July afternoons, with 21.4 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 9.1°C, January lows of −8°C, July highs of 34°C, 544 mm of precipitation a year.
- NOAA stationCambridge
- Station IDUSC00101408
- Location44.57°N 116.68°W
- Elevation2,650 ft (808 m)
- Population365
On October 23, the normal high in Cambridge is 58°F and the normal low 32°F, and the chance of measurable rain or snow is 24%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Cambridge.
- Jan 30° 17°
- Feb 37° 21°
- Mar 51° 29°
- Apr 62° 35°
- May 72° 42°
- Jun 80° 49°
- Jul 93° 56°
- Aug 92° 54°
- Sep 80° 44°
- Oct 63° 34°
- Nov 44° 26°
- Dec 32° 19°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Cambridge each month?
July is the warmest month, with normal highs of 93°F; January the coldest, with normal lows of 17°F. The most precipitation falls in December (3.86 in), the least in August (0.32 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 30°F | 17°F | 23.4°F | 3.24 | 10 | <1 | 30 | 9 h 10 min |
| February | 37°F | 21°F | 28.8°F | 2.40 | 9 | <1 | 26 | 10 h 30 min |
| March | 51°F | 29°F | 39.9°F | 2.26 | 10 | <1 | 21 | 11 h 50 min |
| April | 62°F | 35°F | 48.4°F | 1.57 | 9 | <1 | 11 | 13 h 30 min |
| May | 72°F | 42°F | 57.0°F | 1.81 | 8 | 1 | 3 | 14 h 50 min |
| June | 80°F | 49°F | 64.7°F | 1.29 | 6 | 7 | <1 | 15 h 30 min |
| July | 93°F | 56°F | 74.3°F | 0.38 | 2 | 24 | <1 | 15 h 20 min |
| August | 92°F | 54°F | 72.6°F | 0.32 | 2 | 23 | <1 | 14 h 10 min |
| September | 80°F | 44°F | 62.2°F | 0.57 | 3 | 7 | 1 | 12 h 40 min |
| October | 63°F | 34°F | 48.5°F | 1.30 | 6 | <1 | 13 | 11 h |
| November | 44°F | 26°F | 35.0°F | 2.40 | 10 | <1 | 23 | 9 h 40 min |
| December | 32°F | 19°F | 25.3°F | 3.86 | 12 | <1 | 29 | 8 h 50 min |
| Year (annual) | 61°F | 36°F | 48.3°F | 21.40 | 89 | 62 | 157 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | −1°C | −8°C | −4.8°C | 82 mm |
| February | 3°C | −6°C | −1.8°C | 61 mm |
| March | 10°C | −2°C | 4.4°C | 57 mm |
| April | 16°C | 2°C | 9.1°C | 40 mm |
| May | 22°C | 6°C | 13.9°C | 46 mm |
| June | 27°C | 9°C | 18.2°C | 33 mm |
| July | 34°C | 13°C | 23.5°C | 10 mm |
| August | 33°C | 12°C | 22.6°C | 8 mm |
| September | 27°C | 7°C | 16.8°C | 14 mm |
| October | 17°C | 1°C | 9.2°C | 33 mm |
| November | 7°C | −3°C | 1.7°C | 61 mm |
| December | 0°C | −7°C | −3.7°C | 98 mm |
NOAA publishes no 1991-2020 snowfall normal for this station, and no record within 25 miles keeps one, so snow is left out here rather than estimated.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00101408; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Cambridge?
Normal highs sit between 65°F and 85°F in May, June and September. Of those, September has the fewest days with rain (3).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00101408.
When is the last frost in Cambridge?
In Cambridge, the last spring frost (32°F) comes after May 15 in half of years and after June 4 in one year in ten; the first autumn frost comes before September 27 in half of years and before September 12 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- May 151 year in 10 after June 4; 9 in 10 after April 29
- First autumn frost, half of years before
- September 271 year in 10 before September 12; 9 in 10 before October 9
NOAA puts the median frost-free season at 134 days, and the season without a hard freeze (28°F) at 164 days.
A hard freeze (28°F) comes after April 28 in half of springs and before October 7 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Cambridge in zone 6a in ZIP code 83643, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Cambridge's NOAA station is in zone 6a: the coldest night of a typical year reaches −10°F (27 complete years).
Frost dates for every NOAA station in Idaho · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00101408; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Cambridge?
In a normal year in Cambridge, 62 days a year reach 90°F (15 of them 100°F or more), 157 nights fall to 32°F or colder and 89 days bring measurable precipitation.
- Days at 90°F or more
- 62a normal year
- Days at 100°F or more
- 15a normal year
- Nights at 32°F or colder
- 157a normal year
- Days that stay below freezing
- 36high of 32°F or less
- Days with 0.01 inch of precipitation
- 89a normal year
The highest temperature in this station's record (since 1894) is 117°F, on July 29, 1934; the lowest is −35°F, on December 13, 1919.
The wettest calendar year on that record is 1940, with 32.78 in; the snowiest season is 1951–52, with 139.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00101408; records: ACIS (NOAA Regional Climate Centers), station USC00101408. Records use complete months only; a month missing more than three days is left out.
How sunny is Cambridge?
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Cambridge, 4.4 kWh per square metre a day. July is the sunniest month (92%) and December the cloudiest (57%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 61% | 1.6 |
| February | 66% | 2.5 |
| March | 66% | 3.6 |
| April | 74% | 5.3 |
| May | 78% | 6.5 |
| June | 82% | 7.3 |
| July | 92% | 7.8 |
| August | 91% | 6.6 |
| September | 86% | 5.0 |
| October | 78% | 3.2 |
| November | 66% | 1.8 |
| December | 57% | 1.2 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Cambridge need?
A normal year in Cambridge brings 6,734 heating degree days, 25% more than the median U.S. place (5,373), and 693 cooling degree days, 24% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,632 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,291 | 0 |
| February | 1,015 | 0 |
| March | 777 | 0 |
| April | 498 | 0 |
| May | 261 | 13 |
| June | 92 | 81 |
| July | 9 | 297 |
| August | 14 | 251 |
| September | 135 | 51 |
| October | 514 | 1 |
| November | 902 | 0 |
| December | 1,229 | 0 |
| Year (annual) | 6,734 | 693 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00101408. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Cambridge been warmer than normal lately?
2021 averaged 49.5°F, 1.2°F above the 1991-2020 normal of 48.3°F.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 49.5°F | +1.2°F | 18.74 |
Over 75 complete years from 1895 to 2021, the station's annual mean temperature rose at a fitted 1.6°F per century (+0.09°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00101408; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Cambridge's climate compare?
Cambridge is warmer than 57 of the other 84 places with their own NOAA record in Idaho, and wetter than 58. Across the 7,247 U.S. stations with normals, its annual mean of 48.3°F is warmer than 33%.
In the Köppen classification computed from these normals, Cambridge is Dsa: continental, dry-summer, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Cambridge share this climate record?
Midvale has no NOAA station with 1991-2020 normals of its own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Midvale, ID218 people · 8 mi SW
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Cambridge's climate
What is the coldest month in Cambridge?
January, with a normal high of 30°F and a normal low of 17°F. The warmest is July (93°F by day, 56°F at night).
What is the rainiest month in Cambridge?
December, with 3.86 in of precipitation in a normal year; the driest is August with 0.32 in.
What plant hardiness zone is Cambridge in?
The USDA's 2023 map puts Cambridge in zone 6a in ZIP code 83643, the nearest ZIP area. By the same method at Cambridge's NOAA station, the coldest night of a typical year reaches −10°F (27 years, 1991-2020): zone 6a.
How late can frost come in Cambridge?
In half of years the last 32°F night comes after May 15; in one year in ten it comes after June 4. Waiting until June 4 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Idaho climateThe statewide normals and every place in the state
- Council, ID17 miles from this station, 49.2°F a year
- Brownlee Dam, ID21 miles from this station, 55.0°F a year
- Weiser, ID27 miles from this station, 52.3°F a year
- Richland, OR27 miles from this station, 49.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made