India’s agri-met advisory network — IMD Krishi, Agromet Field Units and district Krishi Vigyan Kendras — issues weather-based crop guidance twice a week. Farmers who read the district advisory alongside a mainstream 7-day forecast get 10–20% higher yield with 15% lower input cost on average. The Meghdoot app now delivers this advisory in eleven Indian languages.

This guide covers how weather decides yield, the ideal temperature and rainfall bands for the main Indian crops, regional monsoon patterns you should know, safety steps for the field and the exact portals and mobile apps every farmer should have installed before the next season starts.

Every crop has a temperature comfort band, a moisture-need band and a critical-stage rainfall need. Wheat needs cool sowing weather; rice needs standing water in transplanting; pulses need dry flowering. When the weather leaves the band, yield drops fast — and once yield is lost in flowering or grain-fill, no later input can bring it back.

The mid-week rainfall band is the single most watched forecast. A day with 40mm+ rain in the middle of harvest can knock out an entire season’s income; a dry spell in the middle of tillering can cost 20–30% of yield. Farmers who read the rain window and re-schedule spraying, harvesting and irrigation typically outperform peers who don’t by 15% on net income.

Weather also decides pest and disease pressure. High humidity plus warm nights fuels rice blast, wheat rust and cotton bollworm; sustained dryness fuels mite outbreaks. The agri-met advisory bundles a pest-and-disease forecast with the rain-and-temperature forecast in one bi-weekly SMS.

Punjab, Haryana and western UP grow Rabi wheat on 400–650 mm of well-distributed winter rain and light western-disturbance showers. Andhra, Telangana, Karnataka, Tamil Nadu and Kerala grow Kharif rice on southwest monsoon rain from June to September. Maharashtra, MP and Rajasthan grow soybean, cotton and pulses on Kharif rain.

In the northeast — Assam, Arunachal, Meghalaya — the annual rainfall is 2500–5000 mm, and the challenge is drainage rather than water availability. In Rajasthan and Gujarat, sustained dry spells define the season and drip-irrigation timing carries the yield. In every region, the district agri-met advisory issued by the state Agromet Field Unit is the single most useful tool a farmer has.

IMD Krishi (bi-weekly district agri-met advisory) is the primary source. Meghdoot is IMD’s dedicated mobile app for farmers, in 11 Indian languages, delivering forecast + crop advice in one card. Damini gives 30-minute lightning warnings. mKisan portal issues SMS alerts on registered mobile.

State Krishi Vigyan Kendras (KVKs) run village-level advisories tied to soil-type and micro-climate. Kisan Suvidha bundles weather, mandi prices, and market advisory. Cross-check any private-app forecast against Meghdoot and the state KVK before making a big field decision — a wrong call on spraying or harvest can cost the whole season.

How reliable is the district agri-met advisory? IMD Krishi’s 5-day advisory is 80–85% accurate for temperature and 70–75% for rainfall — reliable enough to plan the week’s field work.

Should I sow immediately after the first monsoon shower? Not always — wait for the IMD’s ‘active monsoon’ declaration for your district or two consecutive wet days above 25 mm. A false start risks re-sowing costs.

Which mobile apps do Indian farmers use? IMD Meghdoot (weather + agri advisory), Damini (lightning), mKisan (SMS alerts), Kisan Suvidha, and the state Krishi Vigyan Kendra pages.

Does the temperature forecast include soil temperature? Not by default. Soil-temperature forecasts are available on IMD’s dedicated Agromet Advisory Bulletin for major crops and districts.

What is normal rainfall departure? IMD classifies districts as Large Excess (+60% and above), Excess (+20 to +59%), Normal (-19% to +19%), Deficient (-20% to -59%) and Large Deficient (-60% and below).

The Pradhan Mantri Fasal Bima Yojana (PMFBY) uses weather-station data to trigger part of the payout — a district that records rainfall below the notified threshold at a critical crop stage is eligible for an early-payout claim.

Enrol on the PMFBY portal at the start of every season, check the notified sum insured for your crop and district, and keep photographic evidence of any weather-linked damage. Combine this with the IMD Krishi advisory so you know when a claim is likely.