# Rain in San Francisco in Apr 2026

> Above 1 inch leads at 13%, runner-up 7% across 2 winner-take-all outcomes — refreshed just now.

URL: https://simplefunctions.dev/odds/rainsfom
Updated: 2026-05-09T04:20:44.416Z
Category: general
Status: active
Closes: 2026-06-01

## Headline

- Leader: Above 1 inch at 13%
- Runner-up: Above 2 inches at 7%
- Outcomes: 2 (winner-take-all)
- Venue: Kalshi (2 contracts)
- 24h volume: $660

## Bound contracts (2)

| Outcome | Price | 24h | Volume | Venue | Slug |
|---|---|---|---|---|---|
| Above 1 inch | 13¢ | +1pp | $129 | kalshi | /markets/rain-in-san-francisco-in-may-2026-above-1-inch-kalshi-kxrainsfom-26may-1 |
| Above 2 inches | 7¢ | ±0 | $531 | kalshi | /markets/rain-in-san-francisco-in-may-2026-above-2-inches-kalshi-kxrainsfom-26may-2 |

## 30-day trajectory

| Day | Above 1 inch | Above 2 inches |
|---|---|---|
| 2026-05-01 | 12 | 3 |
| 2026-05-02 | 11 | 6 |
| 2026-05-08 | 11 | 2 |

_6 days of price history captured. Each row is the daily mean of intraday 5-min captures._

## What moved the line

- 2026-05-07 · Above 1 inch −4pp 14→10¢ · kalshi
- 2026-05-02 · Above 2 inches +3pp 3→6¢ · kalshi
- 2026-05-03 · Above 2 inches −3pp 6→3¢ · kalshi
- 2026-05-07 · Above 2 inches −3pp 5→2¢ · kalshi
- 2026-05-03 · Above 1 inch +3pp 11→14¢ · kalshi

## Methodology

Headline is the **leader's price**, not an arithmetic mean — averaging disjoint winner-take-all outcomes is meaningless. Per-outcome prices come from the venue's last-traded mid; cross-venue values are simple means across contracts on each venue.

## How to use this data

- HTML: https://simplefunctions.dev/odds/rainsfom
- JSON: https://simplefunctions.dev/api/public/odds?slug=rainsfom

## License

CC-BY-4.0. Attribute "SimpleFunctions" with a link to https://simplefunctions.dev. See https://simplefunctions.dev/legal for terms.