Climate snapshot for alpacas
74/100Alpaca climate comfort score
95°FAverage high, Jul
22°FAverage low, Jan
~67Days above 90°F (32°C) per year
~108Frost nights per year
23 inAnnual precipitation
6Barber pole worm months
12Hay bales / alpaca / year
Main challenges
- Summer heat — heat-stress precautions needed in Jun–Aug
- Barber pole worm — long warm-wet parasite season (Apr–Aug, Oct)
Advantages
- Winters are cold but rarely severe
- A long grazing season (9 months of grass growth)
Overall rating: 74/100 — Good on our alpaca climate comfort score. Climate type: Humid subtropical (Köppen Cfa).
Month-by-month climate
Average highAverage lowPrecipitation
| Month | High | Low | Precip. | Heat-stress index | Notes |
|---|---|---|---|---|---|
| Jan | 48°F | 22°F | 0.7 in | 115 · ok | frost |
| Feb | 52°F | 25°F | 0.8 in | 114 · ok | frost |
| Mar | 62°F | 34°F | 1.6 in | 124 · ok | grass |
| Apr | 71°F | 43°F | 2.0 in | 130 · ok | worms, grass |
| May | 80°F | 54°F | 3.0 in | 148 · caution | worms, grass |
| Jun | 90°F | 64°F | 3.6 in | 150 · high | worms, grass |
| Jul | 95°F | 68°F | 2.7 in | 153 · high | worms, grass |
| Aug | 93°F | 67°F | 3.0 in | 149 · caution | worms, grass |
| Sep | 85°F | 58°F | 1.7 in | 144 · caution | grass |
| Oct | 73°F | 45°F | 2.2 in | 119 · ok | worms, grass |
| Nov | 60°F | 32°F | 0.9 in | 131 · ok | grass |
| Dec | 49°F | 24°F | 1.0 in | 114 · 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 Harper County, Oklahoma
January 48° / 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.
February 52° / 25°F
- Book your shearer now — spring calendars fill up fast.
- 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).
March 62° / 34°F
- 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.
- CDT boosters for females due next month; prepare a clean birthing paddock and birthing kit.
- Spring grass: switch from hay to pasture gradually over 1–2 weeks and monitor body condition.
- Toenail check and trim.
April 71° / 43°F
- Shearing month: shear the whole herd, and trim toenails, check teeth and body condition while animals are restrained.
- 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.
May 80° / 54°F
- Warm spells possible — watch for open-mouth breathing in heavy-fleeced or dark animals.
- 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).
- Toenail check and trim.
June 90° / 64°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).
July 95° / 68°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.
- Toenail check and trim.
August 93° / 67°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 85° / 58°F
- Warm spells possible — watch for open-mouth breathing in heavy-fleeced or dark animals.
- Meningeal worm risk: keep alpacas off wet wooded edges and watch for hind-leg weakness; discuss prevention with your vet.
- Fly season: clean dung piles regularly and use traps around the barn.
- Toenail check and trim.
October 73° / 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.
November 60° / 32°F
- Secure winter hay: about 12 small square bales per alpaca per year here — test a sample before buying.
- Winter prep: install water heaters, repair shelters and windbreaks, stock bedding.
- Vitamin D for crias and juveniles (ask your vet about product and dose).
- Toenail check and trim.
December 49° / 24°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).
Key recommendations
- Shearing: April.
- Best months for crias to be born: Apr–May (breed in May–Jun).
- Heat precautions: Jun–Aug.
- Barber pole worm season: Apr–Aug, Oct — run fecal egg counts every 4–6 weeks in these months.
- Freezing nights: Dec–Feb — keep water from freezing.
- Vitamin D for crias: Nov–Feb.
- Grazing season: Mar–Nov (about 9 months); feed hay the rest of the year.
- Meningeal worm: This area is at the western edge of the meningeal worm range. Risk is real where deer and snails share wet, wooded pastures.
- Selenium: Selenium levels vary across the state. Test hay or blood before changing supplements.
Tools: heat-stress calculator · winter hay calculator · due-date calculator · parasite control guide.
Alpaca farms & shops nearby
No alpaca farms near Harper County, Oklahoma are mapped on OpenStreetMap yet. If you keep alpacas here, consider adding your farm to OpenStreetMap — it will appear on this page after the next update.
Frequently asked questions
Can you raise alpacas in Harper County, Oklahoma?
Yes. Alpacas are kept successfully in most climates with good management. Harper County, Oklahoma scores 74/100 (good) on our alpaca climate comfort scale; the key issues are summer heat and barber pole worm.
When should alpacas be shorn in Harper County, Oklahoma?
Plan shearing for April, 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 Harper County, Oklahoma?
Mild months suit newborn crias best — here that is Apr–May. For births then, breed females in May–Jun (gestation is about 335 days).
How much hay does an alpaca need per year in Harper County, Oklahoma?
With roughly 3 months of little or no grazing, plan on about 565 lb (256 kg) — around 12 small square bales — per adult alpaca per year, plus waste.
How hot does it get for alpacas in Harper County, Oklahoma?
Heat-stress precautions are needed in Jun–Aug. We estimate about 67 days a year above 90°F (32°C).
Nearby counties
Coordinates 36.800, -99.663 · land area 1,039 sq mi. Long-term averages, not forecasts. See methodology and data sources. Back to Oklahoma.