Senior assassin happens outdoors, which means weather happens too. Rain is usually not a problem, because the game uses water anyway. But when the cold gets serious or storms roll in, the rules need to say what stops the game and what just makes it tougher. Smart organisers write the weather rules down before the season starts, so nobody has to argue about whether today counts.

Rain and how it affects gameplay

Rain does not stop senior assassin. In fact, rain often makes eliminations harder to see and trace. A player standing in a downpour has water running down their back already, which means your target is wet whether you hit them or not. Some players argue this makes the game less conclusive in heavy rain, since the witness line between 'that was my shot' and 'that was just weather' gets blurry.

The real effect of rain is visibility. Rain reduces how far you can see, which changes the risk balance. A player waiting under an overhang for their target to walk past is harder to spot. A parking lot becomes harder to cross. These are not reasons to cancel, but they are reasons some regions add rain-specific rules. A handful of game organisers require witnesses to confirm eliminations more strictly in heavy downpour, or they add a 'confirmed hit only' rule where splashes do not count if the witness cannot see water transfer directly.

Cold weather and the temperature line

This is where the rulebook has to be firm. Cold weather poses real safety risk. Players standing outside in freezing temperatures for an hour can develop hypothermia, especially if they get wet and then exposed to wind. Most established senior assassin seasons set a hard cutoff temperature, usually 32 degrees Fahrenheit or 0 degrees Celsius, below which the game does not run.

The cold-weather line is not negotiable. It is not 'we'll see how people feel' or 'it depends if the sun is out'. The rulebook should name the exact temperature, and should say eliminations are suspended when the official forecast for the day falls below that line. This protects both players and organisers from the argument that happens when someone gets hurt. Schools and game leaders who have run seasons for years tend to set this rule early and stick to it. Cold tolerance varies by region: where senior assassin is popular shapes what temperature thresholds make sense. A season running in Minnesota needs a different cold line than one in California. If your season runs into late March or early April in a cold region, you need this rule in the book before the first game starts.

Lightning and electrical storms

Lightning is the one weather condition that stops most games immediately. Unlike rain or cold, a lightning strike can kill. The rule is simple: if lightning is happening or forecast for the area where the game runs, the game does not happen that day. This is the one time a rulebook should have zero room for interpretation or negotiation.

Some regions add a 'thirty-minute rule', meaning if lightning has not struck in the last thirty minutes and is not forecast for the next hour, play can resume. The idea is that if the danger has passed, the game can restart. But this only works if someone is actively monitoring the weather and tracking time. If you see lightning or hear thunder during play, that is the signal to stop right then and move everyone to shelter.

• If you see lightning, stop the game immediately and move to shelter.
• If the forecast calls for thunderstorms, move the game or cancel for the day.
• Do not wait for a strike to hit nearby. Lightning can jump from clouds with no ground warning.
• A thirty-minute all-clear window (if your rulebook includes one) means no lightning and no thunder in thirty minutes, not 'the storm is still far away'.

Fog, low visibility, and darkness

Fog and heavy mist reduce how far you can see your target. This makes stalking easier and confirmation harder. Some game groups add a visibility threshold: if fog is so thick that you cannot see across a parking lot, the game shifts to short-range eliminations only, or play pauses until visibility improves. A handful of regions go further and suspend eliminations until visibility clears, treating extreme fog like a partial storm.

Darkness is a separate category. Senior assassin games run during school hours for most players, so darkness is not usually part of the game. But if your school starts early or plays into late afternoon in winter, you need to say when daylight ends play. Some organisers set a sunset deadline. Others name a specific time, like 'game ends at 5 PM'. Without this rule, you get players arguing about whether a 7 PM strike in dim light counts as an elimination.

Snow and extreme precipitation

Heavy snow is partly a temperature problem and partly a playability problem. Snow does not stop the game by itself, but the cold that comes with snow often puts you below that temperature threshold. Snow also makes movement harder and increases injury risk from slipping or falling.

If your season runs into April or May and a late snowstorm hits, the snow itself may not close schools, but the rulebook should probably say the game pauses anyway. This is a judgment call each region makes based on their climate. A school in Boston might decide that an April snow shower runs because the kids are out at recess anyway. A school in Atlanta might cancel because nobody is dressed for it. Write the rule that matches your actual weather patterns, not the weather everyone wishes you had.

Wind and conditions that make hits unclear

High wind is the forgotten weather rule. Wind does not kill players or stop traffic the way lightning does, but it does make water gun kills harder to verify. A spray in a strong headwind may not reach the target. A splash that lands could be wind-blown water rather than a direct hit. A witness standing downwind of the target has an obscured view.

Most rulebooks do not address wind specifically, which often means games run no matter how blustery it gets. If your region deals with regular high-wind days (spring storms, Santa Anas, Chinooks), consider adding a wind threshold. This might be 'sustained gusts over 30 miles per hour stop eliminations' or 'witnesses must have a clear sightline to confirm a hit'. The goal is not to stop the game but to make the rule explicit so witnesses and targets are not arguing about visibility.

Seasonal timing and weather planning

Most senior assassin games run in spring because that is when seniors are around, but spring weather is unpredictable. A season that starts in March in a northern state will hit freezing temperatures and possibly snow. One that starts in April in a southern state might hit 90-degree heat before it is over. When does senior assassin start depends largely on your school's calendar, but weather planning should happen at the same time you pick the date. The best approach is to choose your start date knowing what weather to expect, then write the rules around that season.

If you publish the rules using our rules template, you can update them once with everyone's input and not argue every time the weather shifts. The rulebook becomes the reference. Players know going in that there is a 32-degree cutoff, a lightning rule, and a visibility threshold. Nobody has to debate it on a cold morning when they are already wet.

Practical steps to set weather rules

Start by checking what other schools near you do. You can find this in the senior assassin history and how rules change from place to place. If they have played for years, they have learned the hard way what works. Look at your local climate data. If your season runs from March to June, what is the coldest day that month usually is? What is the rainiest week? What time does the sun set? Use that to set real thresholds.

Write the rule in plain language. 'No eliminations if the temperature falls below 32 degrees Fahrenheit' is clear. 'If it is too cold, we will decide' is not. The rulebook should also say who decides. Is it the game organizer? The school? A committee? Whoever decides should do it before the game starts, not minute by minute during play. Your weather rules should work together with other timing rules like how skip days handle seasonal suspensions so the entire season has a consistent framework.