Saline, Michigan climate: Normal weather by month, frost dates and records
Saline's normal year runs from 15°F January nights to 85°F July afternoons, with 34.3 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 9.0°C, January lows of −10°C, July highs of 29°C, 872 mm of precipitation a year.
- NOAA stationSaline Wastewater Treatment Plant
- Station IDUSC00207308
- Location42.16°N 83.78°W
- Elevation750 ft (229 m)
- Population9,101
On October 22, the normal high in Saline is 60°F and the normal low 36°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Saline.
- Jan 33° 15°
- Feb 36° 16°
- Mar 46° 23°
- Apr 59° 34°
- May 71° 45°
- Jun 81° 55°
- Jul 85° 59°
- Aug 83° 57°
- Sep 75° 49°
- Oct 63° 38°
- Nov 49° 28°
- Dec 37° 21°
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 Saline each month?
July is the warmest month, with normal highs of 85°F; January the coldest, with normal lows of 15°F. The most precipitation falls in May (3.71 in), the least in February (2.01 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 33°F | 15°F | 23.5°F | 2.35 | – | <1 | 29 | 9 h 30 min |
| February | 36°F | 16°F | 25.9°F | 2.01 | – | <1 | 27 | 10 h 30 min |
| March | 46°F | 23°F | 34.4°F | 2.41 | – | <1 | 26 | 11 h 50 min |
| April | 59°F | 34°F | 46.7°F | 3.20 | – | <1 | 13 | 13 h 20 min |
| May | 71°F | 45°F | 58.2°F | 3.71 | – | 1 | 1 | 14 h 30 min |
| June | 81°F | 55°F | 68.0°F | 3.50 | – | 3 | <1 | 15 h 10 min |
| July | 85°F | 59°F | 71.6°F | 3.39 | – | 8 | <1 | 15 h |
| August | 83°F | 57°F | 69.6°F | 3.30 | – | 4 | <1 | 14 h |
| September | 75°F | 49°F | 62.1°F | 2.98 | – | 2 | <1 | 12 h 30 min |
| October | 63°F | 38°F | 50.4°F | 2.77 | – | <1 | 9 | 11 h 10 min |
| November | 49°F | 28°F | 38.5°F | 2.61 | – | <1 | 21 | 9 h 50 min |
| December | 37°F | 21°F | 29.2°F | 2.09 | – | <1 | 28 | 9 h 10 min |
| Year (annual) | 60°F | 37°F | 48.2°F | 34.32 | – | 18 | 153 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 0°C | −10°C | −4.7°C | 60 mm |
| February | 2°C | −9°C | −3.4°C | 51 mm |
| March | 8°C | −5°C | 1.3°C | 61 mm |
| April | 15°C | 1°C | 8.2°C | 81 mm |
| May | 22°C | 7°C | 14.6°C | 94 mm |
| June | 27°C | 13°C | 20.0°C | 89 mm |
| July | 29°C | 15°C | 22.0°C | 86 mm |
| August | 28°C | 14°C | 20.9°C | 84 mm |
| September | 24°C | 10°C | 16.7°C | 76 mm |
| October | 17°C | 3°C | 10.2°C | 70 mm |
| November | 9°C | −2°C | 3.6°C | 66 mm |
| December | 3°C | −6°C | −1.6°C | 53 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Ann Arbor SE (7 miles away), gets 59 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00207308; 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 Saline?
Normal highs sit between 65°F and 85°F in May, June, July, August and September.
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 USC00207308.
When is the last frost in Saline?
In Saline, the last spring frost (32°F) comes after May 2 in half of years and after May 18 in one year in ten; the first autumn frost comes before October 11 in half of years and before September 29 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 21 year in 10 after May 18; 9 in 10 after April 17
- First autumn frost, half of years before
- October 111 year in 10 before September 29; 9 in 10 before October 26
NOAA puts the median frost-free season at 160 days, and the season without a hard freeze (28°F) at 184 days.
A hard freeze (28°F) comes after April 21 in half of springs and before October 24 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Saline in zone 6a in ZIP code 48176, the nearest ZIP area.
Frost dates for every NOAA station in Michigan · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00207308; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. 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 Saline?
In a normal year in Saline, 18 days a year reach 90°F and 153 nights fall to 32°F or colder.
- Days at 90°F or more
- 18a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 153a normal year
- Days that stay below freezing
- 44high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00207308.
How sunny is Saline?
Over a year 71% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Saline, 3.8 kWh per square metre a day. July is the sunniest month (80%) and December the cloudiest (54%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 59% | 1.6 |
| February | 62% | 2.4 |
| March | 66% | 3.5 |
| April | 68% | 4.7 |
| May | 70% | 5.5 |
| June | 76% | 6.2 |
| July | 80% | 6.2 |
| August | 78% | 5.3 |
| September | 77% | 4.3 |
| October | 68% | 2.8 |
| November | 63% | 1.8 |
| December | 54% | 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 Saline need?
A normal year in Saline brings 6,698 heating degree days, 25% more than the median U.S. place (5,373), and 598 cooling degree days, 34% 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 2,678 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,285 | 0 |
| February | 1,096 | 0 |
| March | 949 | 1 |
| April | 553 | 2 |
| May | 241 | 30 |
| June | 42 | 132 |
| July | 10 | 215 |
| August | 17 | 160 |
| September | 140 | 55 |
| October | 460 | 5 |
| November | 796 | 0 |
| December | 1,110 | 0 |
| Year (annual) | 6,698 | 598 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00207308. 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.
How does Saline's climate compare?
Saline is warmer than 105 of the other 139 places with their own NOAA record in Michigan, and wetter than 64. Across the 7,247 U.S. stations with normals, its annual mean of 48.2°F is warmer than 33%.
In the Köppen classification computed from these normals, Saline is Dfb: continental, no dry season, warm 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.
What do Saline's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Saline. This page uses Saline Wastewater Treatment Plant; the other differs by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Saline (4 mi SW) USC00207312 | 3 mi SW | 840 ft | 48.4°F | 15°F | 85°F | 34.9 | – | May 2 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Saline's climate
What is the coldest month in Saline?
January, with a normal high of 33°F and a normal low of 15°F. The warmest is July (85°F by day, 59°F at night).
Does it snow in Saline?
Yes. NOAA publishes no 1991-2020 snowfall normal for Saline's NOAA station; the nearest record that keeps one, Ann Arbor SE (7 miles away), records 59 inches of snow in a normal year.
What is the rainiest month in Saline?
May, with 3.71 in of precipitation in a normal year; the driest is February with 2.01 in.
What plant hardiness zone is Saline in?
The USDA's 2023 map puts Saline in zone 6a in ZIP code 48176, the nearest ZIP area.
How late can frost come in Saline?
In half of years the last 32°F night comes after May 2; in one year in ten it comes after May 18. Waiting until May 18 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Michigan climateThe statewide normals and every place in the state
- Ann Arbor, MI5 miles from this station, 47.8°F a year
- Ann Arbor SE, MI7 miles from this station, 48.2°F a year
- Milan, MI7 miles from this station, 49.2°F a year
- Ann Arbor University of Michigan, MI11 miles from this station, 48.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made