What Is the Optimal Temperature for a Cricket Farm?

Acheta domesticus reaches harvest weight 20% faster at 88°F vs 80°F. That speed difference means a shorter grow-out cycle, lower cumulative feed cost, and more bins harvested per month.

Temperature is the most important environmental variable on a cricket farm. Here are the numbers.

TL;DR

• Acheta domesticus* reaches harvest weight 20% faster at 88°F vs 80°F
• A poorly ventilated 95°F room in July can exceed the mortality threshold quickly
• The practical implication: at 80°F, Acheta domesticus might take 8 weeks to reach harvest weight
• At 88°F, the same batch reaches harvest weight in 5–6 weeks
• That's 2+ weeks of feed cost saved per bin per grow-out cycle, multiplied across your entire operation
• Each degree below 85°F adds approximately 2–3 days to the grow-out period
• For most commercial cricket farms: 85–90°F for grow-out, 88–92°F for pinheads and eggs

What Temperature Is Too Hot?

• A poorly ventilated 95°F room in July can exceed the mortality threshold quickly.

Why Temperature Affects Growth Rate

Crickets are ectotherms.

• The practical implication: at 80°F, Acheta domesticus might take 8 weeks to reach harvest weight.
• At 88°F, the same batch reaches harvest weight in 5–6 weeks.
• That's 2+ weeks of feed cost saved per bin per grow-out cycle, multiplied across your entire operation.
• Each degree below 85°F adds approximately 2–3 days to the grow-out period.

The Direct Answer

For most commercial cricket farms: 85–90°F for grow-out, 88–92°F for pinheads and eggs.

These are the temperature ranges that produce the best balance of growth rate, survival, and FCR for Acheta domesticus, the dominant US commercial species.

Temperature Table by Species and Life Stage

| Life Stage | Acheta domesticus | Gryllus bimaculatus |

|---|---|---|

| Egg incubation | 86–90°F | 90–95°F |

| Pinheads (Instars 1–2) | 88–92°F | 90–95°F |

| Juveniles (Instars 3–7) | 85–90°F | 88–93°F |

| Adults (grow-out) | 85–90°F | 88–92°F |

| Breeding adults | 86–90°F | 88–92°F |

Key differences between species:

• Gryllus bimaculatus runs 3–5°F warmer than Acheta domesticus at every stage
• Egg incubation is the most temperature-sensitive phase for both species, fluctuations matter more here than in any other stage
• Pinheads need the warmest end of the grow-out range; late-stage adults can tolerate the cooler end without significant growth impact

What Temperature Is Too Cold for Crickets?

| Temperature | Effect |

|---|---|

| Below 80°F | Growth rate slows; FCR increases |

| Below 70°F | Significant growth impairment; cricket activity reduced |

| Below 65°F | Elevated mortality risk, especially juveniles |

| Below 60°F | Rapid mortality in young nymphs (Instars 1–3) |

| Below 55°F | Lethal for most life stages within hours |

A 5°F temperature drop can increase overnight mortality by 30%. A drop below 60°F for even 2–3 hours can kill an entire bin of early-stage nymphs.

What Temperature Is Too Hot?

Crickets also have an upper limit:

| Temperature | Effect |

|---|---|

| Above 92°F | Sustained exposure reduces egg-laying output by 35%+ in breeders |

| Above 95°F | Heat stress; elevated mortality risk |

| Above 100°F | Rapid mortality in all stages |

Most cricket farms don't struggle with overheating in normal operations, but summer management in poorly insulated facilities is a real risk. A poorly ventilated 95°F room in July can exceed the mortality threshold quickly.

Why Temperature Affects Growth Rate

Crickets are ectotherms. They can't regulate their body temperature internally, their metabolic rate is directly tied to ambient temperature. Warmer = faster metabolism = faster growth, up to the optimal range.

The practical implication: at 80°F, Acheta domesticus might take 8 weeks to reach harvest weight. At 88°F, the same batch reaches harvest weight in 5–6 weeks. That's 2+ weeks of feed cost saved per bin per grow-out cycle, multiplied across your entire operation.

Each degree below 85°F adds approximately 2–3 days to the grow-out period. Across a 30-bin operation at a meaningful feed cost per day, those degrees are worth managing precisely.

How to Maintain the Right Temperature

• Use a thermostatically controlled heat source (not manual on/off)
• Place temperature sensors at bin level, not ceiling level, which reads 5–10°F warmer
• Set a low-temperature alert at 78°F minimum for grow-out rooms
• Add a backup heat source set 5°F below your primary thermostat setting
• Verify overnight temperature with a data-logging sensor before trusting your setup

FAQ

What temperature is too cold for crickets?

Below 65°F, cricket mortality risk increases significantly. Below 60°F for more than 2–3 hours, young nymphs (Instars 1–3) experience rapid mortality at rates above 80% in poorly managed bins. Adults are more resilient but still suffer elevated mortality below 65°F sustained overnight. Set your low-temperature alert to 78°F to maintain a safety buffer.

Do different life stages of crickets need different temperatures?

Yes. Eggs and pinheads (Instars 1–2) need the warmest range: 88–92°F for Acheta domesticus. Late juveniles and adults grow well at 85–90°F. Breeding adults egg-lay most productively at 86–90°F and show reduced egg production above 92°F. Gryllus bimaculatus requires temperatures approximately 3–5°F warmer than Acheta domesticus at every stage.

How do I keep my cricket farm warm in winter?

A thermostatic space heater or heat tape in an insulated grow-out room handles most small operations. Add a backup heat source set 5°F below your primary thermostat, this catches heating system failures before temperatures reach dangerous levels. Install a WiFi temperature sensor at bin level with push alerts. Cricket farms in colder climates (USDA Zone 5 and below) see heating costs increase 35–50% from November through March.

How do I recover a cricket bin after an accidental temperature spike?

First, restore the target temperature for that life stage immediately. Remove any dead crickets to prevent ammonia buildup and monitor the bin closely for the next 48-72 hours. If you see continued elevated mortality, assess whether the colony has enough healthy population to recover or whether early harvest is the better option. Maintaining a detailed temperature log makes it easier to understand how severe the event was and adjust heating protocols to prevent a repeat.

What is the best way to measure temperature inside a cricket bin accurately?

A digital probe thermometer placed at mid-bin height, away from heating elements and exterior walls, gives the most representative reading for the cricket population's actual environment. Infrared (non-contact) thermometers measure surface temperature only and frequently give misleading readings in bin environments. Data-logging sensors that record continuously are preferable to manual spot-checks, since swings between readings can go undetected.

How much does electricity cost to maintain target temperatures in a cricket facility?

Energy cost varies significantly by facility size, climate, and insulation quality. A well-insulated small operation (under 30 bins) in a moderate climate typically adds $40-$80/month to electricity costs for heating. Larger commercial facilities in cold climates can spend $300-$800/month or more during winter months. Improving building insulation is usually the highest-ROI investment for reducing heating costs compared to upgrading heating equipment.

Sources

• Food and Agriculture Organization of the United Nations (FAO) -- Edible Insects: Future Prospects for Food and Feed Security
• North American Coalition for Insect Agriculture (NACIA)
• Entomological Society of America
• University of Florida IFAS Extension -- Entomology and Nematology Department
• USDA Agricultural Research Service

Get Started with CricketOps

Maintaining the right environmental conditions in a cricket facility depends on having reliable data -- not just what your thermostat is set to, but what temperatures your bins actually experienced overnight and over the past week. CricketOps connects to temperature and humidity sensors, logs readings by bin, and alerts you when conditions drift outside your set thresholds. Try CricketOps and build the environmental record your operation needs.