Climate snapshot for alpacas
67/100Alpaca climate comfort score
77°FAverage high, Jul
3°FAverage low, Jan
~1Days above 90°F (32°C) per year
~191Frost nights per year
35 inAnnual precipitation
4Barber pole worm months
17Hay bales / alpaca / year
Main challenges
- Summer heat — heat-stress precautions needed in Jul–Aug
- Meningeal worm — white-tailed deer parasite is established in this region
- Hard winters — average lows under 15 °F in Dec–Mar
- Low selenium — regional soils and hay tend to be selenium-deficient
Overall rating: 67/100 — Good on our alpaca climate comfort score. Climate type: Warm-summer humid continental (Köppen Dfb).
Month-by-month climate
Average highAverage lowPrecipitation
| Month | High | Low | Precip. | Heat-stress index | Notes |
|---|---|---|---|---|---|
| Jan | 20°F | 3°F | 1.6 in | 98 · ok | frost |
| Feb | 25°F | 4°F | 1.2 in | 88 · ok | frost |
| Mar | 37°F | 14°F | 1.8 in | 95 · ok | frost |
| Apr | 50°F | 27°F | 2.9 in | 114 · ok | frost |
| May | 64°F | 39°F | 3.7 in | 131 · ok | grass |
| Jun | 73°F | 50°F | 4.2 in | 145 · ok | worms, grass |
| Jul | 77°F | 54°F | 4.2 in | 152 · high | worms, grass |
| Aug | 75°F | 52°F | 3.7 in | 150 · high | worms, grass |
| Sep | 67°F | 45°F | 3.8 in | 134 · ok | worms, grass |
| Oct | 53°F | 33°F | 3.6 in | 113 · ok | — |
| Nov | 37°F | 22°F | 2.3 in | 115 · ok | frost |
| Dec | 25°F | 10°F | 1.8 in | 103 · ok | frost |
Heat-stress index = average high (°F) + mean humidity (%). “Worms” marks months that suit barber pole worm transmission; “grass” marks the grazing season; “frost” marks months with average lows below freezing. Source: NOAA nClimDiv 1991–2020 county normals.
Alpaca care calendar for Iron County, Wisconsin
January 20° / 3°F
- Hard cold: extra hay at night, heated water, windbreaks and coats for crias or seniors; check ears for frostbite.
- Vitamin D for crias and juveniles (ask your vet about product and dose).
- Toenail check and trim.
February 25° / 4°F
- Hard cold: extra hay at night, heated water, windbreaks and coats for crias or seniors; check ears for frostbite.
- Vitamin D for crias and juveniles (ask your vet about product and dose).
March 37° / 14°F
- Book your shearer now — spring calendars fill up fast.
- Hard cold: extra hay at night, heated water, windbreaks and coats for crias or seniors; check ears for frostbite.
- Vitamin D for crias and juveniles (ask your vet about product and dose).
- Toenail check and trim.
April 50° / 27°F
- CDT boosters for females due next month; prepare a clean birthing paddock and birthing kit.
- Freezing nights: keep water open and feed extra hay during cold snaps.
May 64° / 39°F
- Shearing month: shear the whole herd, and trim toenails, check teeth and body condition while animals are restrained.
- Run pre-season fecal egg counts so you know each animal's baseline.
- Meningeal worm risk: keep alpacas off wet wooded edges and watch for hind-leg weakness; discuss prevention with your vet.
- Cria season: check due dates daily, ensure crias nurse within 4 hours, dip navels and weigh crias daily for two weeks.
- Spring grass: switch from hay to pasture gradually over 1–2 weeks and monitor body condition.
- Toenail check and trim.
June 73° / 50°F
- Barber pole worm season: fecal egg counts every 4–6 weeks, check eyelid color, pick up dung piles twice a week.
- Meningeal worm risk: keep alpacas off wet wooded edges and watch for hind-leg weakness; discuss prevention with your vet.
- Cria season: check due dates daily, ensure crias nurse within 4 hours, dip navels and weigh crias daily for two weeks.
- Breeding window for next year's crias (rebreed females 2–4 weeks after birthing).
July 77° / 54°F
- Heat precautions: shade, airflow, cool fresh water and no handling in the heat of the day.
- Barber pole worm season: fecal egg counts every 4–6 weeks, check eyelid color, pick up dung piles twice a week.
- Meningeal worm risk: keep alpacas off wet wooded edges and watch for hind-leg weakness; discuss prevention with your vet.
- Breeding window for next year's crias (rebreed females 2–4 weeks after birthing).
- Toenail check and trim.
August 75° / 52°F
- Heat precautions: shade, airflow, cool fresh water and no handling in the heat of the day.
- Barber pole worm season: fecal egg counts every 4–6 weeks, check eyelid color, pick up dung piles twice a week.
- Meningeal worm risk: keep alpacas off wet wooded edges and watch for hind-leg weakness; discuss prevention with your vet.
September 67° / 45°F
- Barber pole worm season: fecal egg counts every 4–6 weeks, check eyelid color, pick up dung piles twice a week.
- Meningeal worm risk: keep alpacas off wet wooded edges and watch for hind-leg weakness; discuss prevention with your vet.
- Secure winter hay: about 17 small square bales per alpaca per year here — test a sample before buying.
- Toenail check and trim.
October 53° / 33°F
- Winter prep: install water heaters, repair shelters and windbreaks, stock bedding.
- Vitamin D for crias and juveniles (ask your vet about product and dose).
November 37° / 22°F
- Freezing nights: keep water open and feed extra hay during cold snaps.
- Vitamin D for crias and juveniles (ask your vet about product and dose).
- Toenail check and trim.
December 25° / 10°F
- Hard cold: extra hay at night, heated water, windbreaks and coats for crias or seniors; check ears for frostbite.
- Vitamin D for crias and juveniles (ask your vet about product and dose).
Key recommendations
- Shearing: May.
- Best months for crias to be born: May–Jun (breed in Jun–Jul).
- Heat precautions: Jul–Aug.
- Barber pole worm season: Jun–Sep — run fecal egg counts every 4–6 weeks in these months.
- Freezing nights: Nov–Apr — keep water from freezing.
- Vitamin D for crias: Oct–Mar.
- Grazing season: May–Sep (about 5 months); feed hay the rest of the year.
- Meningeal worm: Meningeal worm (carried by white-tailed deer) is established in this region and is a leading cause of neurological disease in alpacas. Talk to your vet about a prevention plan for the snail season.
- Selenium: Soils and hay in this state are often selenium-deficient. Use a camelid mineral formulated for low-selenium areas and blood-test a few animals each year.
Tools: heat-stress calculator · winter hay calculator · due-date calculator · parasite control guide.
Alpaca farms & shops nearby
Places mapped on OpenStreetMap with “alpaca” in their name, within about 80 km (50 miles). Contact them before visiting — opening times change.
| Name | Type | Distance | Website |
|---|---|---|---|
| Suri Fina Alpaca Farm Store · Washburn | shop | 38 mi | Visit |
Data © OpenStreetMap contributors. Know a farm that's missing? Add it to OpenStreetMap and it will appear here in the next update.
Frequently asked questions
Can you raise alpacas in Iron County, Wisconsin?
Yes. Alpacas are kept successfully in most climates with good management. Iron County, Wisconsin scores 67/100 (good) on our alpaca climate comfort scale; the key issues are summer heat, meningeal worm and hard winters.
When should alpacas be shorn in Iron County, Wisconsin?
Plan shearing for May, once nights stay above about 38°F (3°C) but before summer heat builds.
What is the best time for crias to be born in Iron County, Wisconsin?
Mild months suit newborn crias best — here that is May–Jun. For births then, breed females in Jun–Jul (gestation is about 335 days).
How much hay does an alpaca need per year in Iron County, Wisconsin?
With roughly 7 months of little or no grazing, plan on about 833 lb (378 kg) — around 17 small square bales — per adult alpaca per year, plus waste.
How hot does it get for alpacas in Iron County, Wisconsin?
Heat-stress precautions are needed in Jul–Aug. We estimate about 1 days a year above 90°F (32°C).
Nearby counties
Coordinates 46.327, -90.261 · land area 758 sq mi. Long-term averages, not forecasts. See methodology and data sources. Back to Wisconsin.