Andover, MN Climate: Temperature & Rain by Month
Pulled from NOAA NCEI 1991–2020 normals →: climate measurements used in PlainClimate's documented score
30-year climate normals (1991-2020) from Andover's primary NOAA station, ANDOVER 1N.
The climate verdict for Andover
Winter sets the terms in Andover, Minnesota. A pronounced 58.5°F seasonal swing and heating demand above twice the cooling total frame an annual average of 44°F. At 49/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 18% of scores.
- 44°F
- yearly average temperature, NOAA normal
- 49/100
- comfort score, above 18% of station-mapped location scores
- 28.8"
- annual precipitation · 44" snow
- 150 days
- frost-free growing season
Andover: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00210190 · Andover, MN 44°F mean · 28.8" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-MID · SWING-WIDE · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 44°F
- RANK-COOL #961
- PHOTO-FINISH ≈ Pretty Rock
- PRCP-MID 28.8"
- SWING-WIDE 59°F
- COMF-LOW 49/100
- LOAD-HEAT 8,283 HDD
- STN-1 USC00210190
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Pretty Rock, ND ( -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 MN station list.
- Andover (this station) 44°F
- Cold Pretty Rock, ND 44°F
- Hot Brownton Wwtp, MN 44°F
- Near Collegeville St…, MN 44°F
- Near Amery, WI 44°F
Andover sits in Minnesota, the #3 coldest U.S. state at 42.2°F statewide annual average - see all 50 coldest states ranked by NOAA normals
Climate Living Index · Andover
Andover: 32/100 · grade F
Andover publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Andover, not an official NOAA rating. Rankings still use Comfort Score 49/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 28.8 in · 6.2 from 35 in | 78/100 · B |
| Normal heat + freeze calendar | 174 calendar days | 29/100 · F |
| Frost-free season | 150 days/year | 25/100 · F |
| Snowfall burden | 44.1 inches/year | 24/100 · F |
| Annual temperature balance | 43.6°F · 23.9° from 67.5°F | 15/100 · F |
Andover · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Andover is a continental Köppen climate: Dfb
Coldest-month mean 12.4°F and warmest-month mean 70.9°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
- 70.9°F
- Coldest month
- 12.4°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 Andover sits across the climate record
Three NOAA fields for Andover'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, Andover sits in the cooler third of annual means.
- Annual precipitation
- 39th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- Wider than 96%
- Warmest-to-coldest month gap for Andover is large versus 6,861 complete station-years.
How Andover compares across U.S. station-mapped locations
Andover's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
49 18th percentile score exceeds 18% 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 | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 22°F (-5°C) | 2°F (-16°C) | 12°F (-11°C) | 0.6" | 5.1" | 30.8 | 0.0 |
| February | 28°F (-2°C) | 7°F (-14°C) | 17°F (-8°C) | 0.8" | 9.6" | 27.8 | 0.0 |
| March | 41°F (5°C) | 19°F (-7°C) | 30°F (-1°C) | 1.4" | 6.3" | 26.1 | 0.0 |
| April | 56°F (13°C) | 32°F (0°C) | 44°F (7°C) | 2.9" | 5.7" | 17.5 | 0.0 |
| May | 68°F (20°C) | 45°F (7°C) | 56°F (14°C) | 3.6" | 0.0" | 2.8 | 1.0 |
| June | 78°F (25°C) | 55°F (13°C) | 66°F (19°C) | 3.8" | 0.0" | 0.0 | 2.1 |
| July | 82°F (28°C) | 60°F (15°C) | 71°F (22°C) | 4.5" | 0.0" | 0.0 | 3.9 |
| August | 80°F (26°C) | 57°F (14°C) | 68°F (20°C) | 3.6" | 0.0" | 0.0 | 2.0 |
| September | 72°F (22°C) | 48°F (9°C) | 60°F (16°C) | 2.5" | 0.0" | 1.4 | 1.0 |
| October | 58°F (14°C) | 36°F (2°C) | 47°F (8°C) | 2.7" | 0.7" | 11.5 | 0.0 |
| November | 41°F (5°C) | 23°F (-5°C) | 32°F (0°C) | 1.4" | 4.3" | 23.5 | 0.0 |
| December | 27°F (-3°C) | 11°F (-12°C) | 19°F (-7°C) | 1.0" | 12.4" | 30.2 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 83°F around July 15, short of 90°F on every date, while 174 dates carry a normal low at or below freezing, the coldest 2°F near January 19.
The freezing stretch
The normal low stays at or below 32°F into April 15, then returns to freezing around October 25, covering 174 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 4, when 30% of years recorded at least a hundredth of an inch. The driest is February 12 at 16%. Summed across the calendar, that is about 82 wet dates a year.
The widest day
April 27 carries the biggest normal gap between afternoon and dawn, 24°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Andover.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 5.1"
4.8 days with precipitation
Snow: 9.6"
4.7 days with precipitation
Snow: 6.3"
5.5 days with precipitation
Snow: 5.7"
7.8 days with precipitation
8.5 days with precipitation
8.9 days with precipitation
7.9 days with precipitation
8.0 days with precipitation
6.4 days with precipitation
Snow: 0.7"
7.7 days with precipitation
Snow: 4.3"
4.7 days with precipitation
Snow: 12.4"
6.8 days with precipitation
Andover runs a summer-peaked wet season
41% of Andover's yearly precipitation falls in June, July and August alone, against the 25% an evenly spread year would give those three months. The wettest month is July at 4.5", on a wide 58.5°F gap between its warmest and coldest month. Warm-season convection and, across the Southwest, the North American monsoon produce this shape: rain arrives in short heavy bursts during the hottest part of the year rather than as long cool-season soaking.
- Wettest three months: July, June, August, taking 41% of the annual total between them.
- Driest month: January at 0.6".
- Winter share: 8% falls in December, January and February.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. A summer-peaked label means the June-August share reaches 35%; it describes timing across an average year, not any single season, and says nothing about how heavy an individual storm can be.
When it rains in Andover, it arrives in quantity
28.8" of precipitation falls across only about 82 wet days here, averaging 0.35 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 82 a year, 22% of all days
- Average depth per wet day
- 0.35 inches
- Most wet days
- June, about 9
- Fewest wet days
- February, about 5
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Winter brings real snow to Andover
Andover averages 44.1 inches of snowfall a year, with December the snowiest month on the normals, spread across roughly 21 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: 44.1 inches of depth.
- Days recording measurable snow: about 21 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 15% 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
October 2
50% probability date
Last Spring Freeze
May 5
50% probability date
Growing Season
150 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
8,283
Higher = more heating needed
Cooling Degree Days
508
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside MN closest to Andover 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).
- Clearmont, WY 44°F · 0.0°F off
- Conde, SD 44°F · 0.0°F off
- Crestone, CO 44°F · 0.0°F off
- Guffey, CO 44°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (28.8" here), excluding temperature-peer places.
- Concord, NE 28.8" · 0.0" off
- Island Park, ID 28.8" · 0.0" off
- Escanaba, MI 28.8" · 0.0" off
- Taloga, OK 28.8" · 0.0" off
Snow and freeze rhythm
When cold and snow define Andover
heating led · moderate · high swing
Winter and seasonal range jointly define this record. Andover logs 8,283 heating degree days, more than twice its 508 cooling total, while the typical coldest-to-warmest-month gap reaches 58.5°F. The annual mean therefore compresses two materially different seasons.
Andover's frost-free season lasts about 150 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
-
1. Andover coldest normal
January
Averaging 12°F (-11°C), this month sits below freezing for the month as a whole, not merely overnight.
-
2. Andover typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Andover snow peak
December
Andover averages 44.1 inches of snow a year, with December the snowiest month on the normals.
Questions about Andover's climate
How much snow does Andover get? ▼
How cold does Andover get in winter? ▼
How much energy does heating and cooling require in Andover? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Andover's primary station: ANDOVER 1N (USC00210190). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 2701486). Match rule for Andover: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Andover 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.